Missile Or Spacecraft Guidance Patents (Class 342/62)
  • Patent number: 11308646
    Abstract: A system including one or more processors and one or more non-transitory computer-readable media storing computing instructions configured to run on the one or more processors and perform: obtaining an image of an item; removing background pixels from the image by removing white pixels from the image up to a first threshold; determining an item outline of the item in the image, wherein the item outline comprises aliased pixels along a periphery of the item in the image; removing grey pixels from the item outline in the image up to a second threshold to create a first updated image; removing shadows from the first updated image to create a second updated image based on a saliency map and a third threshold for shadow-like grey pixels; mapping each pixel in the second updated image to a respective mapped color in a predetermined color palette; and determining one or more dominant colors of the respective mapped colors based on one or more highest respective percentages of the respective mapped colors.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: April 19, 2022
    Assignee: WALMART APOLLO, LLC
    Inventor: Haider Syed
  • Patent number: 11280879
    Abstract: A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/or compensating for interference.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: March 22, 2022
    Assignee: Oculii Corp.
    Inventors: Lang Hong, Steven Hong
  • Patent number: 11271301
    Abstract: While a radar waveform generator coupled to a phased antenna array is inactive, a beam steering command is provided to the phased antenna array to cause the phased antenna array be configured for a given transmit and receive direction. While the radar waveform generator is active, received radar results are assigned to the given transmit and receive direction. the providing of the command and the assigning are repeated for a plurality of additional transmit and receive directions corresponding to a desired scan area.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: March 8, 2022
    Assignee: International Business Machines Corporation
    Inventors: Asaf Tzadok, Alberto Valdes Garcia, Mark Yeck, Huijuan Liu
  • Patent number: 10802111
    Abstract: A level measurement instrument comprises an analog circuit for transmitting a pulse signal at a target of interest and receiving reflected echoes of the pulse signal and developing an echo waveform representative of the reflected echoes. A programmed digital circuit is operatively coupled to the analog circuit and comprises a programmed controller and memory. The controller is operatively programmed to identify peaks in the echo waveform and store an active peak list in the memory from a current measurement scan and a buffer peak list from prior measurement scans. The controller is further programmed to match peaks in the active peak list to peaks in the buffer peak list, to select a target peak from the active peak list based on which of the matched peaks have moved, and determining material level responsive to the target peak.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: October 13, 2020
    Assignee: Magnetrol International, Inc.
    Inventors: Christopher P. Turcotte, Steven R. Page
  • Patent number: 10753708
    Abstract: A method of targeting a missile. A plurality of images of a target, taken from a plurality of viewpoints, are received. Features in the images characteristic of the target are identified. Data representing the characteristic features are provided to the missile to enable the missile to identify, using the characteristic features, the target in images of the environment of the missile obtained from an imager included in the missile.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 25, 2020
    Assignee: MBDA UK Limited
    Inventor: Andrew James Naftel
  • Patent number: 10336474
    Abstract: The invention relates to a method for deflecting space debris comprising steps of: launching (E2) a thruster (2) by means of a sounding rocket (1) at a target altitude close to that of the one or more debris to be deflected. generating (E3) by the thruster a gas cloud (G) above the sounding rocket.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: July 2, 2019
    Assignee: CENTRE NATIONAL D'ETUDES SPATIALES
    Inventor: Christophe Bonnal
  • Patent number: 10027386
    Abstract: Methods, systems and apparatuses for selecting parameters of a beam are disclosed. One method includes selecting, by a network controller of a wireless network, coarse beam parameters of each of a plurality of antenna arrays of a first node or a second node of the wireless network based on one or more static parameters of the first node and the second node, selecting, by at least one of the first node or the second node of the wireless network, fine beam parameters of each of the plurality of antenna arrays of the first node or the second node based on perturbations to dynamic parameters of at least one wireless link between the first node and the second node, and forming at least one beam by at least one of the first node or the second node using the coarse beam parameters and the fine beam parameters.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: July 17, 2018
    Assignee: Facebook, Inc.
    Inventor: Sanjai Kohli
  • Patent number: 9726754
    Abstract: A method for calibrating a three dimensional time-of-flight camera system mounted on a device, includes determining at a first instant a direction vector relating to an object; determining an expected direction vector and expected angle for the object to be measured at a second instant with reference to the device's assumed trajectory and optical axis of the camera; determining a current direction vector and current angle at the second instant; determining an error represented by a difference between the current direction vector and the expected direction vector; and using the error to correct the assumed direction of the main optical axis of the camera system such that said error is substantially eliminated.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: August 8, 2017
    Assignee: ifm electronic GmbH
    Inventors: Javier Massanell, Volker Frey, Thomas May
  • Patent number: 9245198
    Abstract: An information processing apparatus comprises: a registration unit adapted to register information required to determine at least one specific pattern in an image; an input unit adapted to input image data; a first generation unit adapted to extract a predetermined feature distribution from the input image data, and to generate a first feature distribution map indicating the feature distribution; a second generation unit adapted to generate a second feature distribution map by applying a conversion required to relax localities of the first feature distribution map to the first feature distribution map; and a determination unit adapted to determine, using sampling data on the second feature distribution map and the registered information, which of the specific patterns the image data matches.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: January 26, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Mitarai, Masakazu Matsugu, Hiroto Yoshii
  • Patent number: 9030347
    Abstract: Systems and methods for improving vehicle survivability. In some embodiments, threat information relating to at least one potential threat against at least one vehicle during a mission may be accessed. The threat information may comprise threat location information indicative of at least one likely location for the at least one potential threat and at least one model associated with the at least one potential threat. Prior to commencing the mission, the threat information may be used to assign a numerical measure to each potential action of a plurality of potential actions for the at least one vehicle based at least in part on at least one measure of the at least one vehicle resulting from executing the potential action. The plurality of potential actions may be compared based at least in part on the respective numerical measures assigned to the plurality of potential actions.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: May 12, 2015
    Assignee: Lockheed Martin Corporation
    Inventors: Carl R. Herman, James C. Rosswog
  • Patent number: 8924980
    Abstract: The present invention relates to a method of scheduling for multi-function radars. Specifically, the present invention relates to an efficient urgency-based scheduling method. The present invention provides a method of scheduling tasks in a radar apparatus including the steps of: receiving one or more tasks to schedule; calculating an urgency function for each said task; and storing the said tasks using said urgency function to order each said task relative to the other said tasks; wherein when a task is to be performed, the task having the highest value of urgency function is located.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: December 30, 2014
    Assignee: BAE SYSTEMS plc
    Inventor: Derek Geoffrey Finch
  • Patent number: 8788120
    Abstract: System and methods for managing targets of a vehicle is provided. In some aspects, a system may include a boundary check module configured to receive boundary information from a flight safety system. The boundary information comprises a selected termination boundary of a plurality of termination boundaries confining navigation of the vehicle. Each of the plurality of termination boundaries is associated with a target of a plurality of targets of the vehicle. The system may further include a target modification module configured to select the target associated with the selected termination boundary, and a target guidance module configured to provide the selected target to a guidance and control system of the vehicle.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: July 22, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Andrew P. Imbrie, Steven A. Dunn, Andrew A. Myers
  • Patent number: 8773300
    Abstract: A missile includes a radar system that has a radome through which a main antenna sends and receives signals. The radome includes a radome body and a radome tip include different transmissive materials, with for example the radome body primarily made of a lossy optically nontransparent material, and the radome tip primarily made of a lossless (permittivity with low imaginary part) glass material that may also be optically transparent. A laser may be used in conjunction with the radome to send and receive encoded signals. The laser may be located behind (aft of) the main antenna, and one or more optical fibers may extend into and/or along the radome to guide laser signals to the radome tip. The laser may be used to emit encoded signals so as to allow multiple radar systems operating in the same area at the same time to discriminate between different targets.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: July 8, 2014
    Assignee: Raytheon Company
    Inventors: Glafkos K. Stratis, Alphonso A. Samuel, Salvatore Bellofiore, David J. Knapp
  • Patent number: 8698058
    Abstract: A ranging seeker apparatus includes an RF antenna and a bistatic ranging detector operatively connected with the RF antenna. The RF antenna and bistatic ranging detector are operative for detecting one or more guidance objects in a RF band and providing angle and range data to the missile. Also, a missile including a missile body, a missile propulsion system disposed in or on the missile body, and the ranging bistatic RF seeker disposed in or on the missile body.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: April 15, 2014
    Assignee: Lockheed Martin Corporation
    Inventor: Ronald H. LaPat
  • Patent number: 8686326
    Abstract: In certain aspects, this invention is a “control system” that detects and minimizes (or otherwise optimizes) an angle between vehicle centerline (or other reference axis) and vehicle velocity vector—as for JDAM penetration. Preferably detection is exclusively by optical flow (which herein encompasses sonic and other imaging), without data influence by navigation. In other aspects, the invention is a “guidance system”, with optical-flow subsystem to detect an angle between the vehicle velocity vector and line of sight to a destination—either a desired or an undesired destination. Here, vehicle trajectory is adjusted in response to detected angle, for optimum angle, e.g. to either home in on a desired destination or avoid an undesired destination (or rendezvous), and follow a path that's ideal for the particular mission—preferably by controlling an autopilot or applying information from navigation.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: April 1, 2014
    Assignee: Arete Associates
    Inventors: John C. Dennison, David C. Campion
  • Patent number: 8681068
    Abstract: A technique for suppressing backwaves employs a photonic approach. In one aspect, the technique includes an apparatus, including: a radiating element; and a microwave-photonic device for suppressing backwaves from the radiating element. In a second aspect, the technique includes a method for removing unwanted radiation from a radiating device, comprising: receiving unwanted radiation from the radiating device; communicating the received radiation to an electro-optically active material; communicating laser light to the electro-optically active material; communicating electromagnetic products of interactions between the radiation and the laser light to a photodiode; and communicating photodiode outputs to a termination.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 25, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Brett A. Williams, Kurt S. Schuder, J. Michael Zamarron
  • Patent number: 8682507
    Abstract: Disclosed are a method and system for improving real-time determination of flight parameters of an aircraft during flight. A selection module selects and delivers measured values of input parameters to an estimation unit, and the estimation unit uses the input parameters to estimate at least two selected flight parameters. The input parameters are received by the estimation unit on the basis of identified flight mechanics equations associated with the selected flight parameters. The estimation unit includes an extended Kalman filter, which is configured to receive the values of the input parameters and to output joint estimations of the selected flight parameters based on the flight mechanics equations, during the flight of the aircraft.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 25, 2014
    Assignees: Airbus Operations SAS, Onera (Office National d'etudes et de Recherches Aerospatiales)
    Inventors: Pierre Ezerzere, Cedric Seren, Georges Hardier
  • Patent number: 8664575
    Abstract: A miniature lightweight high-maneuverability missile (10) has a missile body (12) with three sets of at least two aerodynamic control surfaces (14, 16, 18) for independent control of roll, pitch and yaw of the missile. Each set of control surfaces (14, 16, 18) is independently controlled by a corresponding actuator (20) deployed within the missile body (12). Other preferred features include selection of an elevation angle of incidence at a target, and switching between explosive and kinetic modes of operation.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: March 4, 2014
    Assignee: Rafael Advanced Defense Systems Ltd.
    Inventors: Yariv Bril, Yakov Hetz, Oded Yehezkeli, Ehud Chishinsky
  • Patent number: 8637798
    Abstract: A method for determining a position of a device in a reference coordinate system. The method including: receiving, at the device, less than all of GPS signals necessary to determine the position of the device in the reference coordinate system; transmitting a signal from a? illuminating source defined in the reference coordinate system; receiving the signal at a cavity waveguide disposed on the device; and determining the position of the device in the reference coordinate system based on the GPS signals and the signal received in the cavity waveguide. The signal received in the cavity waveguide can also be used to confirm a position determined by the GPS signals.
    Type: Grant
    Filed: December 11, 2011
    Date of Patent: January 28, 2014
    Assignee: Omnitek Partners LLC
    Inventor: Jahangir S. Rastegar
  • Patent number: 8610041
    Abstract: A system for engaging hostile air or space threats with a defensive missile, where the defensive missile comprises an antenna for receiving global positioning system (GPS) signals. A global positioning system receiver is coupled to said antenna, for receiving global positioning system signals directly from global positioning system satellites and global positioning system signals reflected from the threat. A processing arrangement processes the direct and reflected global positioning system signals for determining the position and velocity of the threat. Vectoring controls are coupled to the processing arrangement, and are responsive to the location of the threat for directing the defensive missile toward the threat. In a particular embodiment, the antenna of the defensive missile is directionally controllable, and the defensive missile includes an antenna direction controller responsive to the processor for directing at least a beam of the antenna toward the threat.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: December 17, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Jonathan A. Boardman
  • Patent number: 8598501
    Abstract: A sensor system uses ground emitters to illuminate a projectile in flight with a polarized RF beam. By monitoring the polarization modulation of RF signals received from antenna elements mounted on the projectile, both angular orientation and angular rate signals can be derived and used in the inertial solution in place of the gyroscope. Depending on the spacing and positional accuracies of the RF ground emitters, position information of the projectile may also be derived, which eliminates the need for accelerometers. When RF signals of ground emitter/s are blocked from the guided projectile, the sensor deploys another plurality of RF antennas mounted on the projectile nose to determine position and velocity vectors and orientation of incoming targets.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 3, 2013
    Assignee: Northrop Grumman Guidance an Electronics Co., Inc.
    Inventors: A. Douglas Meyer, Mostafa A. Karam, Charles A. Lee, Charles H. Volk
  • Patent number: 8586901
    Abstract: Embodiments of a guidance section that compensates for boresight error (BSE) caused by effects of a composite radome. The guidance section includes a BSE compensation element to add high-pass filtered noise to compensated BSE data. The guidance section also includes and a Kalman filter to generate line-of-sight rate (LOSR) BSE noise from the compensated BSE data and the added high-pass filtered noise. In some embodiments, a method for generating a revised BSE correction matrix is provided. The revised BSE correction matrix may compensate for BSE caused by effects in the composite radome and may correct for relative target velocity error.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: November 19, 2013
    Assignee: Raytheon Company
    Inventor: Robert L. Kesselring
  • Patent number: 8587473
    Abstract: A method for onboard determination of a roll angle of a projectile. The method including: transmitting a polarized RF signal from a reference source, with a predetermined polarization plane; receiving the signal at a pair of polarized RF sensor cavities positioned symmetrical on the projectile with respect to a reference roll position on the projectile; measuring a difference between an output of the pair of polarized RF sensor cavities resulting from the received signal to determine zero output roll positions of the projectile; and comparing an output of the pair of polarized RF sensor cavities at each of the zero output positions to determine when the projectile is parallel to the predetermined polarization plane. The method can also include analyzing an output of at least one third sensor positioned on the projectile to determine whether the roll angle position of the projectile is up as compared to the horizon.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: November 19, 2013
    Assignee: Omnitek Partners LLC
    Inventors: Jahangir S. Rastegar, Carlos M. Pereira
  • Patent number: 8581775
    Abstract: A method for determining a target angle. Optical frequency or radio frequency energy is received through a pair of fixed, foreshortened, and opposing subwavelength apertures in a lensing system. A lens of the lensing system positions at least one of the pair of fixed, foreshortened, and opposing subwavelength apertures and includes a dielectric medium, and a substrate encased in the dielectric medium and defining at least one of the pair of fixed, foreshortened, and opposing subwavelength apertures. A target angle is determined from a steep change of amplitude versus angle presented by the pair of fixed, foreshortened, and opposing subwavelength aperture's beamwidth from the received optical frequency or radio frequency energy.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: November 12, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Brett A. Williams
  • Patent number: 8581161
    Abstract: A molded dichroic mirror and a seeker comprising a molded dichroic mirror are provided. The dichroic mirror may be molded from polysiloxane or lithia potash borosilicate and may be coated to reflect an infrared signal and configured to transmit a radio frequency signal between 33 GHz and 37 GHz.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: November 12, 2013
    Assignee: Raytheon Company
    Inventors: Byron B. Taylor, W. Howard Poisl
  • Patent number: 8575527
    Abstract: A vehicle including electro-optic (EO) imaging has a vehicle body having an outer surface including a front portion and a side portion, wherein the side portion includes a plurality of portholes. A propulsion source is within the vehicle body for moving the vehicle. A fixed EO imaging system having a field-of-regard (FOR) includes a plurality of fixed EO imaging sub-systems arrayed within the vehicle body. The fixed EO imaging sub-systems each have a different field-of-view (FOV) for providing a portion of the FOR and include a camera affixed within the vehicle body and an optical window secured to one of the portholes for transmitting electromagnetic radiation received from one of the portions of the FOR to the camera, wherein the cameras each generate image data representing one of the portions of the FOR therefrom. A processor is coupled to receive the image data from the plurality of fixed EO imaging sub-systems for combining the image data to provide composite image data spanning the FOR.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 5, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: James A. Fry
  • Patent number: 8569669
    Abstract: A SAR image recorded by a reconnaissance system is transferred as a reference edge image together with the data of the trajectory as a reference. The signal of the infrared seeker head of the missile is converted into a virtual SAR edge image and compared to the SAR reference image to calculate the precise position of the missile.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: October 29, 2013
    Assignee: LFK-Lenkflugkoerpersysteme GmbH
    Inventors: Michael Holicki, Nikolaus Schweyer, Juergen Zoz
  • Patent number: 8538600
    Abstract: Method and control system for providing control commands for a vehicle steerable by an operating unit or for an image acquisition device of the vehicle by sequential display of acquired image data on an image display device of the operating unit connected to the vehicle via a data transfer connection. The method includes acquiring data of an image recorded by the image acquisition device, acquiring vehicle state data at a time the image was recorded, and compressing the image data. The method also includes transferring the compressed image data and the vehicle state data via the data transfer connection to the operating unit, decompressing the transferred image data to form a displayable image, and displaying the displayable image on the image display device.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: September 17, 2013
    Assignee: LFK-Lenkflugkoerpersysteme GmbH
    Inventor: Alfred Schoettl
  • Patent number: 8497456
    Abstract: Embodiments of a guided munition are provided, as are embodiments of a method for equipping a guided munition with an interlocking dome cover. In one embodiment, the guided munition includes a munition body, a seeker dome coupled to the munition body, and an interlocking dome cover. The interlocking dome cover includes a plurality of detachable dome cover sections collectively enclosing the seeker dome and a dome cover deployment device coupled to the plurality of detachable dome cover sections. When actuated, the dome cover deployment device initiates separation of the plurality of detachable dome cover sections to expose the seeker dome.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 30, 2013
    Assignee: Raytheon Company
    Inventor: Rudy A. Eisentraut
  • Patent number: 8487226
    Abstract: Guided airborne weapons fired in a salvo against multiple targets are deconflicted by performing a scene correlation of multiple cued targets to TLOs acquired by the seeker's imaging sensor to track a target package. If the weapon is provided with a multimode seeker, target cues for a common designated target and a common SAL code are provided to each weapon. Each weapon uses its SAL sensor to detect and process a SAL return to verify the common SAL code and augment their scene correlations by fixing the TLO track file of the common designated target to the cued track file associated with the designated target. At terminal, each weapon commits to a particular target by referencing its assigned target to the tracked target package. Correlation to multiple targets in the target package makes the acquisition and tracking process more robust and reduces targeting ambiguity. Furthermore, a single SAL designation can improve the tracking of all the weapons to their respective targets.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: July 16, 2013
    Assignee: Raytheon Company
    Inventor: Brian L. Biswell
  • Patent number: 8471186
    Abstract: In a CLOS missile guidance system, target and missile tracking data e.g. video image data are acquired on a UAV and transmitted to the missile where they are processed to provide guidance control data to the missile. Alternatively the video image data may be transmitted to a command station where the guidance control data is generated and transmitted to the missile, preferably via the UAV.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: June 25, 2013
    Assignee: MBDA UK Limited
    Inventor: Graham Patrick Wallis
  • Patent number: 8471758
    Abstract: Virtual Aperture Radar (VAR) imaging provides terminal phase radar imaging for an airborne weapon that can resolve multiple closely-spaced or highly correlated scatterers on a given target with a single pulse to provide an aimpoint update at a useful range to target without training data and without requiring a large aperture antenna. VAR imaging exploits the sparse, dominant-scatterer nature of man-made targets. The array manifold is constructed with a large number of basis functions that are parameterized by range or angle (or both) to target. The number of basis functions extends the capability to resolve scatterers beyond the Rayleigh resolution. However, this also makes the manifold underdetermined. A sparse reconstruction technique that places a sparsity constraint on the number of scatterers is used to solve the manifold to uniquely identify the ranges or angles to the scatterers on the target.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: June 25, 2013
    Assignees: Raytheon Company, The Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Alphonso A. Samuel, Robert M. Pawloski, Nathan A. Goodman
  • Patent number: 8464949
    Abstract: A method including detecting a threat incoming to a vehicle, the vehicle having a plurality of countermeasures including a primary armament and an active protection system, communicating the detected threat to a controller, activating, with the controller, a first sensor in response to the detecting, the first sensor tracking the incoming threat and generating tracking data, routing, with the controller, the tracking data to a plurality of fire control processors, each of the plurality of fire control processors being associated with a respective one of the plurality of countermeasures, and the plurality of fire control processors simultaneously computing respective firing solutions using the tracking data, and determining, with the controller, a preferred countermeasure out of the plurality of countermeasures with which to counter the incoming threat.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: June 18, 2013
    Assignee: Raytheon Company
    Inventors: Mark A. Namey, James F. Kviatkofsky, James R. Toplicar
  • Patent number: 8416127
    Abstract: A missile radar system includes a tapered radome covering a front face of a main antenna. A calibration antenna is the combination of a metal tip and an attached one or more radiating or excitation elements (monopole) on the tip. A narrow end (wedge) of the radome may aid in directing planar calibration waves toward the main antenna. The metal tip has a curved inner surface that acts, with the attached radiating element(s), as an aperture antenna. Signals are emitted from the calibration antenna back toward the front face of the main antenna. The signals pass from the tip/reflector to the front face of the main antenna through a substantially-metal-free and substantially-dielectric-free volume defined by the inner surface of the radome. The radar system allows for calibration of the antenna prior to launch and/or during flight of the missile.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 9, 2013
    Assignee: Raytheon Company
    Inventors: Glafkos K. Stratis, Alphonso A. Samuel, Salvatore Bellofiore, David J. Knapp
  • Patent number: 8415596
    Abstract: A method for determining a location of a flying target included identifying and measuring the target by at least two seeker systems disposed at a distance from one another. The position of the target relative to at least one of the two seeker systems is determined from measurement data derived therefrom. The position of the target is measured inconspicuously and without active radiation, in that the seeker systems are data-networked, passive target tracking systems for missiles, which autonomously track the target and align the missile with the target. The measurement data determined by the data-networked seeker systems are combined, and the location of the target is determined from the combined data.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: April 9, 2013
    Assignee: Diehl BGT Defence GmbH & Co. KG
    Inventors: Raimund Dold, Thomas Kuhn, Wilhelm Hinding
  • Patent number: 8358238
    Abstract: A hostile missile is identified as being of a type which maneuvers aerodynamically within the atmosphere when it performs an exoatmospheric maneuver which significantly changes its specific energy. When the determination is made that the hostile missile is an atmospheric maneuvering missile, the hostile missile is engaged with an interceptor which is guided toward a predicted intercept point (PIP) assuming horizontal hostile missile flight at an altitude above a specified minimum altitude.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: January 22, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Daniel L. Friedman
  • Patent number: 8354953
    Abstract: In various aspects and embodiments, incident electromagnetic radiation is received through a subwavelength aperture in a lens, the subwavelength aperture being defined by a substrate encased in a dielectric medium.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: January 15, 2013
    Assignee: Lockheed Martin Corp
    Inventor: Brett A. Williams
  • Patent number: 8330646
    Abstract: A number of apparatuses are provided, for sensing and/or emitting energy along one or more desired apparatus line of sights (LOS) with respect to the respective apparatus. In at least one embodiment, the apparatus includes an assembly that is rotatably mounted on a base with respect to a switching axis. The assembly has two or more sensing/emitting units, each having a respective sensing/emitting unit line of sight (ULOS). Each sensing/emitting unit has an operative state, wherein the respective unit ULOS is pointed along a LOS of the apparatus for sensing and/or emitting energy along the LOS, and a corresponding inoperative state, where the respective unit ULOS is pointed along a direction different from this LOS. A switching mechanism enables switching between the sensing/emitting units to selectively bring a desired sensing/emitting unit exclusively into its respective operative state while concurrently bringing a remainder of the sensing/emitting units each to a respective non-operative state.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: December 11, 2012
    Assignee: Elta Systems Ltd.
    Inventor: David Baumatz
  • Patent number: 8321070
    Abstract: In order to target and intercept a desired object within a number of objects detected in an environment, detection data is received from two different sensors, where the detection data includes spatial coordinates. A set of four-point subsets (tetrahedra) are selected from each set of spatial coordinates. A number of correlation maps are determined between the first set of spatial coordinates and the second set of spatial coordinates based on the plurality of four-point subsets. The mean sphericity for each corresponding plurality of four-point subsets in the plurality of correlation maps is determined, and a threat object map based on the correlation map having the greatest mean sphericity is created. The desired object is targeted based on the correlation map.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: November 27, 2012
    Assignee: Raytheon Company
    Inventor: Steven J. Manson
  • Publication number: 20120268309
    Abstract: Virtual Aperture Radar (VAR) imaging provides terminal phase radar imaging for an airborne weapon that can resolve multiple closely-spaced or highly correlated scatterers on a given target with a single pulse to provide an aimpoint update at a useful range to target without training data and without requiring a large aperture antenna. VAR imaging exploits the sparse, dominant-scatterer nature of man-made targets. The array manifold is constructed with a large number of basis functions that are parameterized by range or angle (or both) to target. The number of basis functions extends the capability to resolve scatterers beyond the Rayleigh resolution. However, this also makes the manifold underdetermined. A sparse reconstruction technique that places a sparsity constraint on the number of scatterers is used to solve the manifold to uniquely identify the ranges or angles to the scatterers on the target.
    Type: Application
    Filed: February 10, 2011
    Publication date: October 25, 2012
    Inventors: Alphonso A. Samuel, Robert M. Pawloski, Nathan A. Goodman
  • Patent number: 8288696
    Abstract: A method for engaging a target missile includes sensing the position of the target and of an interceptor missile, and determining time-to-go to intercept and direction of thrust of the interceptor. A one-step intercept solution is determined based on position estimates of the target and the interceptor and is used to iteratively estimate at least two components of a three-dimensional unit thrust vector, and apply updated guidance commands to the interceptor. A system for thrust vector control of an interceptor against a target missile includes a processor for receiving sensed target signals, determining a one-step initial solution to produce time-to-go and current direction of thrust of the interceptor, iteratively estimating at least two components of a three-dimensional unit thrust vector, and producing a guidance vector for application to the interceptor.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: October 16, 2012
    Assignee: Lockheed Martin Corporation
    Inventors: Jeffrey B. Boka, Purusottam Mookerjee, Naresh R. Patel
  • Patent number: 8288697
    Abstract: A method for commanding an attitude change of a boosting missile to tend to maintain good communication link quality includes the step of precalculating attenuation of a link between the boosting missile and a ground station in the presence and absence of multiple missile plumes. If the actual link attenuation is less than the precalculated attenuation in the absence of multiple missile plumes, no attitude change is commanded. If the actual link attenuation exceeds the precalculated value, the actual link attenuation is compared with the calculated attenuation in the presence of multiple missile plumes. If the calculated multiple plume RF attenuation is less than the actual link attenuation, the attenuation is deemed to be caused by some factor other than multiple plume attenuation, and produces a flag for commanding a change in attitude.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: October 16, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: David E. Wolf
  • Patent number: 8285533
    Abstract: Methods, apparatus, and computer readable media for designing an effective and efficient directed energy weapon system. A method for designing a directed energy weapons system may include modeling an environment and postulating a directed energy weapons system deployment. The capability of the postulated directed energy weapon system deployment to defend a target aircraft against a missile threat within the environment may then be simulated. The postulated directed energy weapon system deployment may be iteratively improved based on simulation results.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: October 9, 2012
    Assignee: Raytheon Company
    Inventors: Frederick A. Ahrens, Daniel L. McMaster
  • Publication number: 20120249357
    Abstract: A missile includes a radar system that has a radome through which a main antenna sends and receives signals. The radome includes a radome body and a radome tip include different transmissive materials, with for example the radome body primarily made of a lossy optically nontransparent material, and the radome tip primarily made of a lossless (permittivity with low imaginary part) glass material that may also be optically transparent. A laser may be used in conjunction with the radome to send and receive encoded signals. The laser may be located behind (aft of) the main antenna, and one or more optical fibers may extend into and/or along the radome to guide laser signals to the radome tip. The laser may be used to emit encoded signals so as to allow multiple radar systems operating in the same area at the same time to discriminate between different targets.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Glafkos K. Stratis, Alphonso A. Samuel, Salvatore Bellofiore, David J. Knapp
  • Publication number: 20120249358
    Abstract: A missile radar system includes a tapered radome covering a front face of a main antenna. A calibration antenna is the combination of a metal tip and an attached one or more radiating or excitation elements (monopole) on the tip. A narrow end (wedge) of the radome may aid in directing planar calibration waves toward the main antenna. The metal tip has a curved inner surface that acts, with the attached radiating element(s), as an aperture antenna. Signals are emitted from the calibration antenna back toward the front face of the main antenna. The signals pass from the tip/reflector to the front face of the main antenna through a substantially-metal-free and substantially-dielectric-free volume defined by the inner surface of the radome. The radar system allows for calibration of the antenna prior to launch and/or during flight of the missile.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Glafkos K. Stratis, Alphonso A. Samuel, Salvatore Bellofiore, David J. Knapp
  • Patent number: 8274425
    Abstract: The disclosed approach provides a low-cost approach by employing a single channel receiver for a direction-finding missile, rather than a conventional four-channel system. It employs interferometry techniques. The proposed approach leverages orthogonal waveforms and pseudorandom noise (PN) codes. This is a low-cost approach for a single channel direction finding system by leveraging orthogonal waveforms and interferometric techniques.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: September 25, 2012
    Assignee: Raytheon Company
    Inventors: Mark B. Yeary, James R. Toplicar, Paul E. Doucette, Eleanor Foltz
  • Patent number: 8274027
    Abstract: A laser energy detector may include at least one photodetector device formed on a semiconductor substrate. The photodetector device may have an active area effective to detect laser energy at a laser wavelength. The active area of the laser energy detector may be substantially transparent for a first wavelength band within an infrared portion of the electromagnetic spectrum.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: September 25, 2012
    Assignee: Raytheon Company
    Inventors: Clarence C. Andressen, Robert C. Anderson
  • Publication number: 20120228423
    Abstract: A method for onboard determination of a roll angle of a projectile. The method including: transmitting a polarized RF signal from a reference source, with a predetermined polarization plane; receiving the signal at a pair of polarized RF sensor cavities positioned symmetrical on the projectile with respect to a reference roll position on the projectile; measuring a difference between an output of the pair of polarized RF sensor cavities resulting from the received signal to determine zero output roll positions of the projectile; and comparing an output of the pair of polarized RF sensor cavities at each of the zero output positions to determine when the projectile is parallel to the predetermined polarization plane. The method can also include analyzing an output of at least one third sensor positioned on the projectile to determine whether the roll angle position of the projectile is up as compared to the horizon.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 13, 2012
    Applicant: OMNITEK PARTNERS LLC
    Inventors: Jahangir S. Rastegar, Carlos M. Pereira
  • Patent number: 8258999
    Abstract: A method for onboard determination of a roll angle of a projectile.
    Type: Grant
    Filed: November 22, 2009
    Date of Patent: September 4, 2012
    Assignee: Omnitek Partners LLC
    Inventors: Jahangir S. Rastegar, Carlos M. Pereira
  • Patent number: 8258998
    Abstract: Device, system and method of protecting aircrafts against incoming threats. For example, a system for protecting an aircraft against an incoming threat includes: one or more electro-optic sensors to substantially continuously search for the incoming threat, and to generate a signal indicating that a possible incoming threat is detected; one or more radar sensors to be activated in response to the signal, and to search for the incoming threat; and a central computer to determine whether or not the incoming threat exists, based on a sensor fusion algorithm able to fuse data received from the one or more electro-optic sensors and data received from the one or more radar sensors.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: September 4, 2012
    Assignees: BIRD Aerosystems Limited, EADS Deutschland GmbH
    Inventors: Ronen Factor, David Dragucki, Ariye Yehuda Caplan, Zahi Ben Ari, Semion Zelikman, Colin Henry Hamilton, George Weiss, Erwin Franz Keller, Erhard Seibt