Ecm (electronic Countermeasures, I.e., Jamming) Patents (Class 342/14)
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Patent number: 7737883Abstract: The method generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the method is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.Type: GrantFiled: February 29, 2008Date of Patent: June 15, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: James Dark, James Buscemi, Scott Burkholder
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Patent number: 7728755Abstract: The system is a parallel processing jamming architecture that is designed to automatically attack and concurrently investigate multiple signals simultaneously in the radio environment. The system implements multiple wideband independent channels to allow simultaneous threat signals to be processed in parallel and jammed in real-time. The system automatically attacks a radio communication channel when the suspect radio signal surpasses a dynamic composite threshold which is internally updated using multi-channel data feedback, in real-time. The concurrent analysis with transmission allows the system to optimize the jam efficiency quickly to an unknown signal, and while determining the validity of the threat. The high throughput parallel architecture allows the intelligent jamming process to occur with rapidity and signal multiplicity.Type: GrantFiled: March 14, 2006Date of Patent: June 1, 2010Inventor: Damjan Jocic
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Patent number: 7719457Abstract: A digitally tuned digital radio frequency memory that captures a portion of a first radio frequency signal and retransmits the portion as a coherent radio frequency signal. The digitally tuned radio frequency memory may include a track and hold configured to track and hold the first radio frequency signal and to output a shaped signal; a digitizer configured to convert the shaped signal to a digital word; a memory configured to store the digital word; and a direct digital frequency synthesizer configured to provide a sampling clock signal, wherein the sampling clock signal is provided to the track and hold.Type: GrantFiled: December 18, 2008Date of Patent: May 18, 2010Assignee: Teledyne Cougar, Inc.Inventor: Jeffrey A. Tindall
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Publication number: 20100117884Abstract: The subject matter disclosed herein relates to a system and method for processing multiple navigation signal components received from multiple global navigation satellite systems (GNSS?). In a particular implementation, an energy detection in a first navigation signal component is classified based, at least in part, on information in a second navigation signal component.Type: ApplicationFiled: November 11, 2008Publication date: May 13, 2010Applicant: QUALCOMM IncorporatedInventors: Rizwan Ahmed, Douglas Neal Rowitch
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Publication number: 20100111122Abstract: A laser source assembly (10) for providing an assembly output beam (12) includes a first MIR laser source (352A), a second MIR laser source (352B), and a beam combiner (244). The first MIR laser source (352A) emits a first MIR beam (356A) that is in the MIR range and the second MIR laser source (352B) emits a second MIR beam (356B) that is in the MIR range. Further, the beam combiner (244) spatially combines the first MIR beam (356A) and the second MIR beam (356B) to provide the assembly output beam (12). With this design, a plurality MIR laser sources (352A) (352B) can be packaged in a portable, common module, each of the MIR laser sources (352A) (352B) generates a narrow linewidth, accurately settable MIR beam (356A) (356B), and the MIR beams (356A) (356B) are combined to create a multiple watt assembly output beam (12) having the desired power. The beam combiner (244) can includes a combiner lens (364) and an output optical fiber (366).Type: ApplicationFiled: April 21, 2009Publication date: May 6, 2010Applicant: Daylight Solutions, Inc.Inventors: Michael Pushkarsky, Timothy Day, David F. Arnone
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Patent number: 7696919Abstract: A system and method for warning a helicopter of an approaching bullet using existing sensor systems is disclosed. The disclosed method including the steps of: detecting and providing bearing information for detected small arms weapon firing locations near the helicopter, determining a detection area and detection time window for the fired bullet, determining the antennas of the RF transmitting and RF receiving systems covering the bearing of the detected weapon firing; determining a timing sequence and allocating time segments for transmitting and receiving RF signals during the detection time window, commanding the RF emitting system to emit and the RF receiving system to receive RF signals during their allocated time segments, processing RF signals received and determining whether reflected RF signal pulses from the emitted RF signal pulses are present, and outputting a warning where reflected RF signal pulses are detected.Type: GrantFiled: February 19, 2008Date of Patent: April 13, 2010Assignee: Lockheed Martin CorporationInventor: Stephen C. Moraites
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Patent number: 7688247Abstract: A DIRCM (Direct IR Counter Measures) system includes a detection and warning apparatus for detecting a missile that might pose a threat on the platform to which said system is allocated, and for generating a warning of its existence. The warning may include data that enable the calculation of the expected direction from which the missile is approaching. The DIRCM system may also include an acquisition device for performing acquisition of the approaching missile in accordance with the data provided by the detection and warning apparatus, and issuing data that may enable the calculation in real time of the updated position of the missile, a fiber laser for generating a laser beam, and a motion and aiming enabled turret, coupled with the laser, for directing the laser beam onto the approaching missile.Type: GrantFiled: June 3, 2004Date of Patent: March 30, 2010Assignee: ELOP Electro-Optical Industries Ltd.Inventors: Israel Anschel, Vladimir Krupkin, Andrew Lovett, Zachary Sacks, Doron Chomski, Zeev Schiffer, Kuti Grossman, Elena Luria, Doron David, Itamar Shoshan
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Publication number: 20100052968Abstract: Techniques for detecting jammers in a received signal are described. A jammer detector includes a jammer filter for attenuating transmit signals leaked into the receive path, a pulse generator for converting the interference signals into discrete-level pulses, and a pulse processor for determining the presence of jammers in the discrete-level pulses. In an exemplary embodiment, the pulse processor is configured to further discriminate among close-in jammers that are close to the desired receive frequency, far-away jammers, and jammers arising from the transmit signals leaked into the receive path. In another exemplary embodiment, hysteresis is provided in the pulse generator to enable the generation of reliable pulses. Further aspects include configuring the jammer detector for operation in a plurality of frequency bands and/or according to a plurality of communications standards.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Applicant: QUALCOMM INCORPORATEDInventors: Shrenik Patel, Prasad Gudem, Saraswathi Palakurty
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Patent number: 7667634Abstract: RF decoy anti-missile testing in a virtual environment through simulating the aviation of a missile, the reflected signal of a target, and an active RF decoy by use of a target motion simulator which implements the moving trajectory of the RF decoy. The RF decoy radiates a reflected signal of the target and also a deception signal through use of a microwave device that transfers the detected signal from the missile and amplifies the received signal so that a repeated delay signal of the RE decoy greater than that of the reflected signal of the target is radiated by the target motion simulator, thereby testing the deceit performance of the decoy.Type: GrantFiled: November 9, 2008Date of Patent: February 23, 2010Assignee: Agency for Defense DevelopmentInventors: Dong Cho Shin, Jung Hoon Lee
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Patent number: 7659846Abstract: A method for creating jamming within an area and a jamming arrangement. The arrangement includes a plurality of distributed jammers. The jammers include a transmitter, receiver and logic unit and communication is established with the jammers. Communication is established directly between jammers included in the arrangement and information that is to be transmitted from one jammer to the other jammers is transmitted by superposing the information on the jamming signal that is produced by the jammers. An autonomous distributed arrangement is achieved that is difficult to disable and that can be made relatively simple, reliable and cost-effective.Type: GrantFiled: January 23, 2007Date of Patent: February 9, 2010Assignee: BAE Systems Bofors ABInventor: Fredrik Olsson
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Publication number: 20090322585Abstract: A satellite surveillance countermeasure system uses an airborne platform to position a coherent radiation source above a substantial portion of the Earth's atmosphere. The coherent radiation source provides coherent radiation that is directed toward an enemy surveillance satellite, so as to reversibly deny the satellite the ability to image. By positioning the coherent radiation source at such an altitude, atmospheric attenuation and distortion are mitigated. Thus, a smaller, less powerful and less costly coherent radiation source can be utilized. The use of an airborne platform also makes the system more portable and affordable.Type: ApplicationFiled: November 16, 2004Publication date: December 31, 2009Inventor: Douglas Anthony Galasso
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Publication number: 20090237289Abstract: A jammer for jamming communications in a communications system where the communications system operates with digital bursts having burst periods measured in time and occurring in a communication frequency band such as GSM having a transmit band and a receive band. The jammer includes a tone comb generator for providing repetitions of jamming signals for the communication frequency band where the jamming signals have jamming signal intervals providing frequency separation between the jamming signals. The jamming signals are generated with a dwell time substantially less than a burst period for the communications system. The jamming signals are generated concurrently for the transmit band and the receive band and are transmitted as RF jamming signals to jam communications for mobile stations.Type: ApplicationFiled: September 15, 2006Publication date: September 24, 2009Inventor: Robert Eugene Stoddard
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Publication number: 20090189785Abstract: An automatic system is provided for alerting ground personnel as to the existence of a threat to commercial aircraft in which the threat is determined by a classified system, but in which the local area network employed by the military missile warning is isolated from an unclassified local network coupled to the aircraft's transponder which transmits the threat existence and status to ground personnel. The barrier to transmitting classified information involves both filtering between the classified LAN and unclassified LAN, the use of only discrete signaling lines in the classified LAN isolated by opto-electronics to provide physical separation between the two local area networks, and communications formatting which precludes the transmission of classified information across the barrier between the classified local area network and the unclassified local area network.Type: ApplicationFiled: November 5, 2008Publication date: July 30, 2009Inventors: Arnold Kravitz, Jason Stockwell, Edward Zablocki, George Clemence
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Publication number: 20090174589Abstract: A system and method for warning a helicopter of an approaching bullet using existing sensor systems is disclosed. The disclosed method including the steps of: detecting and providing bearing information for detected small arms weapon firing locations near the helicopter, determining a detection area and detection time window for the fired bullet, determining the antennas of the RF transmitting and RF receiving systems covering the bearing of the detected weapon firing; determining a timing sequence and allocating time segments for transmitting and receiving RF signals during the detection time window, commanding the RF emitting system to emit and the RF receiving system to receive RF signals during their allocated time segments, processing RF signals received and determining whether reflected RF signal pulses from the emitted RF signal pulses are present, and outputting a warning where reflected RF signal pulses are detected.Type: ApplicationFiled: February 19, 2008Publication date: July 9, 2009Applicant: Lockheed Martin CorporationInventor: Stephen C. MORAITES
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Patent number: 7554481Abstract: Various approaches to localized jamming of navigation signals are provided. In one embodiment, a navigation signal comprises at least a portion of a low earth orbit (LEO) signal provided by a LEO satellite. A noise source is filtered to provide a plurality of filtered noise signals in a plurality of frequency bands. The navigation signal is spread over a plurality of channels of the LEO signal. The channels are distributed over the frequency bands and a plurality of time slots. A pseudo random noise (PRN) sequence is generated. The filtered noise signals are modulated using the PRN sequence to provide a plurality of modulated noise signals. The modulated noise signals are broadcast over an area of operations to provide a plurality of jamming bursts corresponding to the navigation signal. The jamming bursts are configured to substantially mask the navigation signal in the area of operations.Type: GrantFiled: May 16, 2007Date of Patent: June 30, 2009Assignee: The Boeing CompanyInventors: Clark E. Cohen, David A. Whelan, Robert W. Brumley, Gregory M. Gutt, Barton G. Ferrell
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Patent number: 7540226Abstract: A thermal radiation-generating decoy mounted adjacent an aircraft engine structure, such as an engine nacelle, includes a heat source inside of an aerodynamic enclosure with a mounting interface to attach the enclosure to the engine structure. The decoy can further be located at the lower extreme of and adjacent the forward-most portion of the engine nacelle in order to attract an infrared-seeking threat to the vicinity of the fan containment portion of the engine nacelle. The decoy can be designed to have a thermal signature that mimics a scaled overall aircraft thermal signature. In addition, the decoy can include a fuse shield adjacent the enclosure to detonate a threat in the case that the threat approach trajectory is imprecise and the threat bypasses the enclosure within an aspect of the fuse shield as viewed from the approach direction of the threat.Type: GrantFiled: October 28, 2005Date of Patent: June 2, 2009Assignee: The Boeing CompanyInventors: Jamie J. Childress, Edward C. Marques
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Publication number: 20090128394Abstract: Disclosed is an active RF decoy simulation apparatus for simulating an active RF decoy system in virtual environment, comprising: a missile seeker which radiates RF signals and detects reflection signals from the target ship, a target motion simulator for implementing the moving trajectory of active RF decoy, in which an antenna for radiating the reflected signal of the target ship and another antenna for radiating the deception signal of the active RF decoy according to the transmitted missile signal are mounted, a microwave device which transfers the detected signal radiated from the missile to the antenna so that the reflected signal of the target ship is radiated by the target motion simulator and which receives the signal radiated from the missile, amplifies the received signal and transfers the signal to the antenna so that a repeated delay signal of the RF decoy simulator which is greater than the reflected signal of the target ship is radiated by the target motion simulator, a missile seeker control dType: ApplicationFiled: November 9, 2008Publication date: May 21, 2009Inventors: Dong Cho Shin, Jung Hoon Lee
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Patent number: 7532856Abstract: A jammer for generating and transmitting RF broadband jamming signals for jamming one or more local RF receivers. The jammer includes a broadband antenna unit for receiving broadband RF jammer received signals from local transmitters and for transmission of regenerated broadband RF jamming signals to the local receivers. The jammer uses a plurality of jamming algorithms including a regeneration algorithm and one or more alteration algorithms that alter the regenerated signals whereby the altered regenerated signals are asynchronous with respect to ones of, or all of, the jammer received signals. The alteration algorithms include a chopping algorithm and an FM modulation algorithm.Type: GrantFiled: March 24, 2006Date of Patent: May 12, 2009Inventors: Robert Eugene Stoddard, John Lorin Anderson
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Patent number: 7523692Abstract: An inexpensive, efficient and lightweight integrated small decoy system towed behind an aircraft to power an intense IR emitter for drawing in a missile with an IR sensitive guidance system away from vulnerable parts of a defended aircraft is combined with a system for simultaneously cloaking the aircraft with spectral bands of atmospherically scattered UV solar radiation reflected, and radiated from UV radiant sources mounted on the aircraft to defend against advanced MANPADS missiles with guidance systems sensitive to UV shadows cast by an aircraft in a background sky radiance of atmospherically scattered solar UV. Both the reflected and direct cloaking UV emittance may be spatially and/or temporally modulated to confuse an incoming missile. The UV aspect of this invention may also be combined with other C-MANPADS missiles, such as DIRCM, to provide additional defensive capability.Type: GrantFiled: November 2, 2007Date of Patent: April 28, 2009Assignee: MLHO, Inc.Inventor: Alan Alexander Burns
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Patent number: 7522097Abstract: A method to compensate for radar platform angular motion may include measuring or estimating any radar platform angular motion. The method may also include substantially decoupling each array subsection response of a plurality of array subsection responses from any radar platform angular motion by applying continuous time varying phase adjustments to each individual array subsection response, prior to forming composite array Sum and monopulse Delta beam responses The time varying phase adjustments may be determined in response to any radar platform angular motion measured or estimated.Type: GrantFiled: December 8, 2005Date of Patent: April 21, 2009Assignee: The Boeing CompanyInventor: David R. Wakeman
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Patent number: 7521655Abstract: A method and apparatus for protecting a civil aircraft from missiles with infrared seeker heads includes detecting a launch of a missile from a location of launch, the missile having an infrared seeker head with an infrared sensitivity range, a power and an operation frequency, continuously determining instantaneous coordinates of the missile in flight after the launch and generating pulsed laser radiation. A wavelength range of the pulsed laser radiation is within the sensitivity range of the infrared seeker head, a power of the pulsed laser radiation exceeds the power of radiation of the aircraft engine in the sensitivity range of the infrared seeker head and a pulse repetition frequency of the pulsed laser radiation is at about the operation frequency of the infrared seeker head. The method includes sending the pulsed laser radiation to the instantaneous coordinates of the missile in flight.Type: GrantFiled: March 17, 2004Date of Patent: April 21, 2009Assignee: Zakrytoe Aktsionernoye obschestvo “STIVIT” (RU)Inventors: Alexander Vasilyevich Kisletsov, Peter Nikolaevich Sygurov, Vladimir Vasilyevich Butuzov, Sergey Dmitrievich Velikanov
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Patent number: 7519332Abstract: A radiocommunication apparatus includes a transmitting device and a receiving device. The transmitting device includes a first local oscillation section for selecting a frequency for a first local oscillation signal from a plurality of predetermined frequencies in order to output the first local oscillation signal, and a first frequency mixing section for mixing an input signal and the first local oscillation signal, thereby forming a transmission signal. The receiving device includes a second local oscillation section for selecting a frequency for a second local oscillation signal from the plurality of predetermined frequencies in order to output the second local oscillation signal, and a second frequency mixing section for mixing a received signal and the second local oscillation signal, thereby forming an output signal.Type: GrantFiled: March 31, 2000Date of Patent: April 14, 2009Assignee: Sharp Kabushiki KaishaInventor: Eiji Suematsu
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Patent number: 7515096Abstract: The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.Type: GrantFiled: September 12, 2007Date of Patent: April 7, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: James Dark, James Buscemi, Scott Burkholder
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Patent number: 7515094Abstract: An apparatus for measuring at least one of unintentional and intentional electromagnetic emissions for at least one of enabling electromagnetic location of predetermined electronic equipment giving off such at least one of such unintentional and intentional electromagnetic emissions, tagging such predetermined electronic equipment and tracking such predetermined electronic equipment and various combination thereof. The apparatus comprises an emitter mechanism for providing an amplified electromagnetic energy which at least one of amplifies and changes a frequency content of the at least one of such unintentional and intentional electromagnetic emissions signature of a targeted electronic device by using an applied electromagnetic field generated by the emitter mechanism. There is a receiver for receiving the at least one of such unintentional and intentional electromagnetic emissions signature of such targeted electronic device.Type: GrantFiled: October 18, 2005Date of Patent: April 7, 2009Assignee: Nokomis, Inc.Inventor: Walter J. Keller, III
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Patent number: 7511657Abstract: The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.Type: GrantFiled: September 12, 2007Date of Patent: March 31, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: James Dark, James Buscemi, Scott Burkholder
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Patent number: 7504982Abstract: The disclosed system, device and method for an anti-missile system generally includes a ground-based sensor array generating tracking data of a guided missile tracking a target. A control node in communication with the ground-based sensor array generates targeting data from the tracking data. A phased array directed-energy unit in communication with the control node radiates the guided missile with microwave radiation based on the targeting data received from the control node, where the microwave radiation disrupts an electronic component of the guided missile such that the guided missile discontinues tracking the target.Type: GrantFiled: June 12, 2006Date of Patent: March 17, 2009Assignee: Raytheon CompanyInventors: Russell Berg, Keith Kato, Kenneth Brown, Reid Lowell, David Crouch
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Patent number: 7505693Abstract: A miniature waveform modulator is provided to modulate an infrared laser. The miniature waveform modulator outputs a pulse train having different and specified pulse widths, with the pulse train used to modulate the laser. In one embodiment, the pulse train extends over a significant period of time without resorting to generating short pulse trains and combining them. The subject architecture permits the miniature waveform modulator to be compact and implementable on an electronic circuit card. It is significant that the pulse train is generated without software intervention by automatically copying a timing table to a buffer that is automatically read out to a pulse generator. If the buffer size is smaller than that required by the timing table, slices or segments of the timing table are sequentially read out or copied to the buffer, with the next timing table segment transferred to the buffer upon read out of a prior segment.Type: GrantFiled: January 3, 2006Date of Patent: March 17, 2009Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventor: Phong V. Ha
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Patent number: 7492308Abstract: An optical detection system for detecting launch of an offensive projectile. The detection system includes an image detector array, an optical arrangement for focusing on to the image detector array, and a processing system associated with the image detector array. The processing system is configured to derive a series of frames from the image detector, to process the series of frames to identify a flash event and to generate and output that indicates a direction of the flash event.Type: GrantFiled: January 18, 2007Date of Patent: February 17, 2009Assignee: Rafael Advanced Defense Systems Ltd.Inventors: Yair Benayahu, Asher Vuskoboinik
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Patent number: 7489264Abstract: An electronic counter measures solution. Jamming signals are emitted towards a threat to improve chances of survival for at least two vehicles, which are physically separated from one another, however associated with one another in a group. Each of the at least two vehicles receives a wireless time reference signal from an external resource. The vehicles exchange messages over a wireless data link. The messages pertain to usage of at least one electronic warfare resource in each vehicle. Based on the messages and the time reference signal the usage of at least one first electronic warfare resource in a first vehicle is coordinated with the usage of at least one second electronic warfare resource in a second vehicle, such that a particular type of jamming signal is emitted alternately either from the at least one first resource or from the at least one second resource, essentially without any overlaps or gaps in time.Type: GrantFiled: January 17, 2006Date of Patent: February 10, 2009Assignee: SAAB ABInventors: Niklas Ferm, Thomas Lindvall
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Patent number: 7478578Abstract: A commercial airliner (100) controls and is flown in formation with a drone aircraft (200) that includes missile detection and diversion equipment (215) capable of protecting the airliner from a man portable missile (130).Type: GrantFiled: June 24, 2005Date of Patent: January 20, 2009Assignee: Honeywell International Inc.Inventor: Philip L. Kirkpatrick
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Publication number: 20090015458Abstract: In an IR jamming system for defense against missiles with IR-sensitive homing heads, one or more jamming beams are generated, whose diameter is less than that of the optical aperture of the IR-sensitive homing head of the missile. The optical aperture of the IR-sensitive homing head of the missile is at least partially illuminated by the jamming beam or beams.Type: ApplicationFiled: May 14, 2008Publication date: January 15, 2009Applicant: EADS Deutschland GmbhInventor: Colin HAMILTON
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Publication number: 20090009379Abstract: A method for creating jamming within an area and a jamming arrangement. The arrangement includes a plurality of distributed jammers. The jammers include a transmitter, receiver and logic unit and communication is established with the jammers. Communication is established directly between jammers included in the arrangement and information that is to be transmitted from one jammer to the other jammers is transmitted by superposing the information on the jamming signal that is produced by the jammers. An autonomous distributed arrangement is achieved that is difficult to disable and that can be made relatively simple, reliable and cost-effective.Type: ApplicationFiled: January 23, 2007Publication date: January 8, 2009Applicant: BAE SYSTEMS BOFORS ABInventor: Fredrik Olsson
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Publication number: 20080297396Abstract: The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.Type: ApplicationFiled: February 29, 2008Publication date: December 4, 2008Inventors: James Dark, James Buscemi, Scott Burkholder
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Publication number: 20080297395Abstract: The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of any number of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour, a Jam Assessment Strobe (JAS) and text for display on a number of flexibly configurable display formats posted on display units. The JAR and JAS graphics and text will aid the EA aircrew in rapidly assessing the effectiveness of a given jamming approach.Type: ApplicationFiled: September 12, 2007Publication date: December 4, 2008Inventors: James Dark, James Buscemi, Scott Burkholder
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Patent number: 7450059Abstract: A non-linear dispersive transmission line assembly for producing high power radio frequency electrical signals includes a transmission line (6, 7) having a plurality of series connected inductors (8) each incorporating saturable magnetic material to provide non-linearity, a first array (11) of capacitors interconnecting outermost ends of immediately adjacent pairs of the inductors (8) and a secondary array (14) of capacitors interconnecting outermost ends of immediately adjacent pairs of the inductors, with the second array interconnection points being spaced by one inductor from the first array interconnection points. The assembly also includes means for applying a first magnetic field to the transmission line (6,7) in a direction substantially perspectively to the direction of a second magnetic field produced in the transmission line by the application thereto of a high voltage input pulse which propagates through the transmission line to form an output high power radio frequency electrical signal.Type: GrantFiled: November 3, 1998Date of Patent: November 11, 2008Assignee: BAE Systems plcInventor: Nigel Seddon
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Patent number: 7436877Abstract: A Method and Apparatus to Perform Surgical Reactive Jamming while Maintaining Simultaneous Tactical Communications is disclosed. The system provides an enhancement to surgical reactive jammers that combines near-real-time jamming capability with the additional feature of allowing tactical communications. The tactical communications transmissions are compressed and packetized such that they can be broken up and transmitted during the jamming system's look-through periods. This approach facilitates listening during these look-through periods (not only for EW emitters, but also for friendly communications signals). The system should allows for talk during these look-through periods (“talk-through” periods). Such a system is unique in that it can automatically calculate the best frequency for a surgical reactive jammer to use against enemy targets as well as providing a fully secure tactical communications link which is synchronized with other units in the field.Type: GrantFiled: July 3, 2006Date of Patent: October 14, 2008Assignee: Agilent Technologies, Inc.Inventor: Lars Karlsson
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Patent number: 7427947Abstract: The invention generally relates to the field of computer software particularly to an improved method of providing aircrew decision aids for use in determining the optimum placement of an Electronic Attack (EA) aircraft. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter's coverage relative to the position of the EA aircraft and to the position of protected entities (PE). The software program generates information to provide visual cues representing a Jam Acceptability Region (JAR) contour and a Jam Assessment Strobe (JAS) for display via designated aircraft cockpit processors and devices. The JAR and JAS will aid the EA aircrew in assessing the effectiveness of a given jamming approach.Type: GrantFiled: May 30, 2007Date of Patent: September 23, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: James Dark, James Buscemi, Scott Burkholder
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Patent number: 7425916Abstract: A digital missile warning system comprising a distributed pulse doppler radar having a plurality of antennas, each being coupled to a transmit/receive (T/R) module located adjacent to the antenna, and parallel signal processing channels including an A/D converter, FFT processor and a range/velocity track file processor in each channel for each antenna resulting in enhanced detection range, reduced False Alarm Rate (FAR), faster response time, reduced size, weight and installation requirements, improved reliability and reduced acquisition and life cycle costs. An optional optical missile warning system can provide azimuth and elevation data to the track file processors which enables a three (3) dimensional track of a missile, with azimuth and elevation angles provided by the optical system and range, velocity and acceleration data provided by the pulse doppler radar. The combination of Pulse Doppler Radar MWS and the Optical MWS produces close to a zero False Alarm Rate (FAR).Type: GrantFiled: November 14, 2006Date of Patent: September 16, 2008Inventor: Robert R. Stevens, Jr.
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Patent number: 7423575Abstract: An ultra wideband (UWB) jamming system comprises a processor, a memory, a pulse generator, one or more UWB transmitters, and one or more UWB antennas. In an exemplary embodiment of the present invention, the RF signals of a threat transmission or an RF-triggered explosive device (RTED) are evaluated and a set of interference parameters defined for the RF signal of that device. The interference parameters are predetermined to interfere with the reception or transmission of the RF signal. The interference parameters are sent to a pulse generator that drives one or more UWB transmitters to generate a signal has a statistically high probability of jamming or introducing an error in the threatening transmission.Type: GrantFiled: January 25, 2006Date of Patent: September 9, 2008Assignee: Sentel CorporationInventors: William G. Duff, Theodore L. Harwood, II, Arthur Light, John P. Smith
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Publication number: 20080198060Abstract: An expendable, stand-alone, off-board Electronic Counter-Measure system, airborne RF decoy aimed to provide airborne platforms with protection against multiple radar-based threats including Air-to-Air and Surface-to-Air missiles both active and semi-active ones. The airborne RF decoy has the mechanical outline of standard chaff and flare decoys and is safely ejected from any platform by pyrotechnic elements. The airborne RF decoy deceives enemy radar-based threats as follows: immediately after its ejection from the protected airborne platform, the decoy activates an energy source, stabilizes its path, acquires illuminating signals and analyzes threat parameters. Then the decoy alters the received signals to generate an authentic false target and transmits a deceiving signal towards the radar threat. The radar threats locks on the decoy and follow its path.Type: ApplicationFiled: July 9, 2007Publication date: August 21, 2008Applicant: RST Reut Systems and Advanced Technologies Ltd.Inventors: Moshe Shani, Avraham Cohen, Arye Amarant, Ely Levine
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Publication number: 20080191924Abstract: An ultra wideband (UWB) jamming system comprises a processor, a memory, a pulse generator, one or more UWB transmitters, and one or more UWB antennas. In an exemplary embodiment of the present invention, the RF signals of a threat transmission or an RF-triggered explosive device (RTED) are evaluated and a set of interference parameters defined for the RF signal of that device. The interference parameters are predetermined to interfere with the reception or transmission of the RF signal. The interference parameters are sent to a pulse generator that drives one or more UWB transmitters to generate a signal has a statistically high probability of jamming or introducing an error in the threatening transmission.Type: ApplicationFiled: January 25, 2006Publication date: August 14, 2008Inventors: William G. Duff, Theodore L. Harwood, Arthur Light, John P. Smith
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Publication number: 20080190274Abstract: A commercial airliner (100) controls and is flown in formation with a drone aircraft (200) that includes missile detection and diversion equipment (215) capable of protecting the airliner from a man portable missile (130).Type: ApplicationFiled: June 24, 2005Publication date: August 14, 2008Applicant: Honeywell International Inc.Inventor: Philip L. Kirkpatrick
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Publication number: 20080174469Abstract: A method and a system for defense against surface-to-air missiles (Manpads), which represent a threat to military and civil aircraft during takeoff and landing. For missile defense, the missile is jammed by irradiating it with electromagnetic jamming radiation. This jamming radiation may be constituted of continuous-wave irradiation or frequency packets with a defined pulse repetition rate.Type: ApplicationFiled: August 23, 2007Publication date: July 24, 2008Applicant: DIEHL BGT DEFENCE GMBH & CO., KGInventors: Robert Stark, Jurgen Urban, Tilo Ehlen, Dieter Weixelbaum
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Publication number: 20080169958Abstract: Various approaches to localized jamming of navigation signals are provided. In one embodiment, a navigation signal comprises at least a portion of a low earth orbit (LEO) signal provided by a LEO satellite. A noise source is filtered to provide a plurality of filtered noise signals in a plurality of frequency bands. The navigation signal is spread over a plurality of channels of the LEO signal. The channels are distributed over the frequency bands and a plurality of time slots. A pseudo random noise (PRN) sequence is generated. The filtered noise signals are modulated using the PRN sequence to provide a plurality of modulated noise signals. The modulated noise signals are broadcast over an area of operations to provide a plurality of jamming bursts corresponding to the navigation signal. The jamming bursts are configured to substantially mask the navigation signal in the area of operations.Type: ApplicationFiled: May 16, 2007Publication date: July 17, 2008Inventors: Clark E. Cohen, David A. Whelan, Robert W. Brumley, Gregory M. Gutt, Barton G. Ferrell
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Patent number: 7400287Abstract: Missile deflector systems for protecting a vehicle from threats that use an infrared sensor for guidance are disclosed. An exemplary missile deflector system can include, for example, a radiation source and one or more deployable smart chaff elements. The light source and the one or more deployable smart chaff elements can direct the threat, such as, for example, a missile, away from the vehicle or, in other embodiments, disable the threat. Another exemplary missile deflector system can include, for example, a smart chaff element with a near-infrared emitter and a plurality of transmitting fibers to transmit the near-infrared radiation out of the smart chaff element.Type: GrantFiled: February 17, 2006Date of Patent: July 15, 2008Assignee: Honeywell International Inc.Inventor: Robert J. Saccomanno
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Patent number: 7391356Abstract: A system and method for suppressing radio frequency (“RF”) transmissions includes a transmitter for transmitting electronic signals that suppresses (e.g., prevents, disrupts, jams, interferes with or otherwise disables) RF transmissions. Some embodiments of the invention include a transmitter that suppresses one or more signals transmitted from a target transmitter in an RF transmission system to a target receiver in a wireless device operating in the RF transmission system to prevent, disrupt, jam, interfere with or otherwise disable an RF transmission between the target transmitter and the target receiver in the wireless device (i.e., target wireless device). These systems and methods may be used to interrupt communication, command and control of non-friendly combatant. These systems and methods may also be used to suppress RF transmissions to prevent the detonation of improvised explosive devices, or IEDs.Type: GrantFiled: September 19, 2005Date of Patent: June 24, 2008Assignee: Pegasus Global Strategic Solutions LLCInventors: Robert Haywood Brumley, II, Michael J. Reedy, Robert Haywood Brumley, III
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Patent number: 7391355Abstract: A geolocation system and method uses a single platform for determining a Doppler measurement set of a targeted aircraft or signal of interest. The electronic warfare aircraft and the ejected aircraft expendables technology device determine the Doppler measurement set of the targeted aircraft or other signal of interest. The ejected aircraft expendables technology device is initially tuned to an expected frequency of the target of interest. Re-tuning may take place after an initial signal reading and computation has been performed by the electronic warfare aircraft.Type: GrantFiled: June 9, 2005Date of Patent: June 24, 2008Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventor: Thomas J. Mortimer
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Publication number: 20080136701Abstract: An electronic counter measures solution. Jamming signals are emitted towards a threat to improve chances of survival for at least two vehicles, which are physically separated from one another, however associated with one another in a group. Each of the at least two vehicles receives a wireless time reference signal from an external resource. The vehicles exchange messages over a wireless data link. The messages pertain to usage of at least one electronic warfare resource in each vehicle. Based on the messages and the time reference signal the usage of at least one first electronic warfare resource in a first vehicle is coordinated with the usage of at least one second electronic warfare resource in a second vehicle, such that a particular type of jamming signal is emitted alternately either from the at least one first resource or from the at least one second resource, essentially without any overlaps or gaps in time.Type: ApplicationFiled: January 17, 2006Publication date: June 12, 2008Applicant: SAAB ABInventors: Niklas Ferm, Thomas Lindvall
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Patent number: 7378626Abstract: An agile, high-power, reliable DIRCM system that is easily extended to address sophisticated UV or UV-visible capable multi-band threats includes a missile warner having missile warning receivers (MWRs), one or two-color suitably in the mid-IR range, that detect likely missile launch and pass the threat coordinates to a pointer-tracker having a Roll/Nod gimbal on which the IR laser transmitter is mounted. The pointer-tracker slews the gimbal to initiate tracking based on the threat coordinates and then uses its detector to continue to track and verify the threat. If the threat is verified, the pointer-tracker engages the laser to fire and jam the missile's IR seeker. By slewing the gimbal based on unverified threat coordinates to initiate tracking the system is highly agile and can respond to short and near simultaneous MANPADS shots.Type: GrantFiled: October 4, 2005Date of Patent: May 27, 2008Assignee: Raytheon CompanyInventor: Donald R. Fetterly
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Publication number: 20080111728Abstract: A digital missile warning system comprising a distributed pulse doppler radar having a plurality of antennas, each being coupled to a transmit/receive (T/R) module located adjacent to the antenna, and parallel signal processing channels including an A/D converter, FFT processor and a range/velocity track file processor in each channel for each antenna resulting in enhanced detection range, reduced False Alarm Rate (FAR), faster response time, reduced size, weight and installation requirements, improved reliability and reduced acquisition and life cycle costs. An optional optical missile warning system can provide azimuth and elevation data to the track file processors which enables a three (3) dimensional track of a missile, with azimuth and elevation angles provided by the optical system and range, velocity and acceleration data provided by the pulse doppler radar. The combination of Pulse Doppler Radar MWS and the Optical MWS produces close to a zero False Alarm Rate (FAR).Type: ApplicationFiled: November 14, 2006Publication date: May 15, 2008Inventor: Robert R. Stevens