Abstract: A method and system for preventing an operator of a vehicle from using a handheld wireless communication device without a hands-free communication device associated therewith when the vehicle is in motion.

Abstract: 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.

Abstract: A system includes a generator and at least one device. The generator includes a waveform oscillator and a blanking pulse generator. Each device includes a transmit antenna, a receive antenna, an antenna unit, a mixer and a detector. The antenna unit includes a receiver coupled to the receive antenna, an amplifier coupled to the receiver and a transmitter coupled to the transmit antenna and the blanking pulse generator. The mixer has inputs coupled to the amplifier and the waveform oscillator. The detector is coupled to the mixer.

Abstract: A method and apparatus for mitigating interference in a satellite signal receiver is described. The satellite signal receiver receives satellite signals from a plurality of satellites. In one example, data transmission of a wireless transceiver operating in proximity to the satellite signal receiver is monitored. A control signal is transmitted to the satellite signal receiver upon occurrence of data transmission from the wireless transceiver. Signal integration within the satellite signal receiver is then gated is response to the control signal. In another example, one or more values of satellite signal samples are selected from a plurality of possible values. A percentage of satellite signal samples having the one or more selected values is monitored over a predefined period. Signal integration within the satellite signal receiver is gated in response to the percentage exceeding a predefined threshold.

Abstract: A control device that shields a room from incoming signals includes a receiving device, an interference device and a transmitting device. By the receiving device transmission signals are received, from which an interference signal is determined in order to interfere with the transmission signal. This interference signal is emitted by way of the transmitting device.

Abstract: A single chip radio transceiver includes circuitry that enables detection of radar signals to enable the radio transceiver to halt communications in overlapping communication bands to avoid interference with the radar transmitting the radar pulses. A method in a radio transceiver includes grouping a plurality of pulse data entries, generating a first list of pulse repetition intervals having pulses with a pulse width within a specified range, counting a number of most and second most common pulse interval values and determining whether a radar signal is present. Generally, the method includes determining a radar is present in one of three different ways, namely, determining whether the number of the most common pulse interval values exceeds a specified value, determining a radar signal is present with an extra pulse and finally, determining a radar is present with a missing pulse.

Abstract: A system and method of detecting, processing, and selectively responding to radio frequency transmissions detected by at least one projectile deployed above a geographic area.

Abstract: 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.

Abstract: The invention provides a method and apparatus that can at least limit use of mobile communication devices on passenger mass transit vehicles, planes, off-road vehicles, pieces of heavy equipment or machinery when predetermined conditions related to motion of such vehicles, planes, equipment, machinery or at least one component thereof are met.

Abstract: The vehicle safety system selectively deactivates a driver's cellular telephone when the driver is ready to drive his or her vehicle. The vehicle safety system first determines the proximity between the cellular telephone and the driver's seat of the vehicle. An identification tag is mounted on or in the vicinity of the driver's seat. The identification tag is sensed by a sensor to determine proximity. A gear state of the vehicle is then determined and transmitted to a call authorization module associated with the cellular telephone. The sensor for sensing the identification tag is also associated with the call authorization module. The call authorization module selectively deactivates the cellular telephone when the cellular telephone is located within a pre-set range from the driver's seat of the vehicle and the gear state of the vehicle is such that the vehicle may be driven under power.

Abstract: Apparatus and method for reducing or avoiding at least in part one or more interferences in a wireless communication device are described herein. The method may include initially sensing by the device an interference from an interference source received by one or more of a plurality of sector antennas of the device. The device may then select, based at least in part on the sensing, a subset of the plurality of sector antennas for communicating with other devices in the wireless network.

Abstract: 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.

Abstract: An embodiment of the present invention provides an apparatus, comprising a radio frequency identification transceiver adapted for self jammer suppression. The transceiver may further comprise a phase shifter and variable attenuator/variable amplifier adjusted to minimize the power injected into a receive chain by the self jammer. In an embodiment of the present invention the present transceiver may further comprise at least one RF peak power detector to determine the power injected into the receive chain.

Abstract: A method and system of disabling a remote improvised explosive device (IED) that is triggered by a cell phone. A portable wideband network system, installed in a vehicle, is used to determine operator frequency or frequencies active on a route along which the vehicle will travel. The vehicle includes a wideband transmitter for raising a radio frequency noise floor across all of the active cellular frequencies in a limited area surrounding the portable wideband network system during passage along the route. A notch filter is used by the system for filtering a particular frequency from the noise floor. The power level of the portable wideband network system is increased so that the strongest signal at the particular frequency in the limited area is provided by the portable system's base station. All mobile terminals in the limited area around the vehicle are connected to the portable system and the portable system prevents call completion of any of the connected mobile terminals.

Abstract: Systems and methodologies are described that facilitate dynamically scheduling frequency sets for reuse by user devices to reduce inter-cell interference by evaluating an overall scheduling metric for each user device in a wireless communication region. The overall scheduling metric can be evaluated by determining a fairness metric for each user device in a wireless communication region, an overall channel peak desirability metric for each user device, and a channel delay desirability metric for each user device. The overall scheduling metric can be the product of the fairness metric and one or more of the overall channel peak desirability metric and the channel delay desirability metric. A user device with a highest overall scheduling metric score for a given round of dynamic scheduling can be awarded a frequency set.

Abstract: Method for jamming detection in a mobile telecommunications network comprising the steps of, at a user equipment registered with the mobile telecommunications network: a) measuring a signal power level in at least one of a plurality of communication channels between the user equipment and a base station within a band of operation of the mobile telecommunications network; b) checking whether the signal power level in said at least one communication channel is greater than a threshold MNPL and, if so, attempting to decode a Base Station Identity Code BSIC broadcast by the base station in said communication channel; c) repeating steps a) and b) for a certain number of channels; d) signalling a jammed condition report JDR message to the base station if said BSIC cannot be decoded for said number DCMN of channels.

Abstract: In embodiments, an adaptive tone erasure technique is applied to orthogonal frequency division multiplexing (OFDM) communications, such as ECMA-368 standard ultra-wideband (UWB) communications. A transmitter obtains jammed sub-carrier information and calculates an erasure mask. The jammed sub-carriers are nulled before transmitting to a receiver. In accordance with the erasure mask, bits falling on the jammed sub-carriers are replaced by erasure bits before interleaving, keeping the interleaver block size constant notwithstanding variations in the number of the jammed sub-carriers. The receiver also obtains the jammed sub-carrier information and the erasure mask. After the receiver deinterleaves the constant size blocks, it decodes the data without the erasure bits. The transmitter may detect the jammed sub-carriers itself, or obtain the information from the receiver. The receiver similarly may detect the jammed sub-carriers itself, or obtain the information from the transmitter.

Abstract: An RF signal processing device which includes a countermeasure set connected to the processing device. The RF signal processing device shifts an incoming RF signal by ninety degrees and combines the phase shifted RF signal with RF jamming signals from a jammer. The processing device next transmits the RF signal including the RF jamming signals from the jammer.

Abstract: In one embodiment of the present invention, an object of the invention is to provide a wireless communication-improving sheet member capable of increasing a possible communication distance of an IC tag for wireless communication, a wireless IC tag, an antenna, and a wireless communication system. A first spacer includes an arrangement face on which on which the wireless IC tag is disposed without a wired connection, and an auxiliary antenna is disposed on the first spacer on an opposite side to the arrangement face, the auxiliary antenna resonating with electromagnetic waves used in the wireless communication. The auxiliary antenna includes a first conductor layer as a resonant layer and a second spacer. The second spacer is disposed on an opposite side to the first spacer with the first conductor layer interposed therebetween. A discontinuous area is disposed in the first conductor layer of the auxiliary antenna.

Abstract: A patch antenna system and method comprising a base extending in a first plane; at least one patch mounted in a plane substantially parallel to the first plane; spaced from the base by at least one metallic post such that between the base and patch is substantially only gaseous fluid (which may be air). At least one power source may be operatively connected to the at least one patch for generation of electromagnetic waves at a center frequency of approximately 5.8 Gigahertz. The method of neutralizing unattended microwave devices comprises connecting a power source to a patch antenna and operating the patch antenna at a frequency in the range of approximately 3.89 to of 5.85 Gigahertz in the vicinity of a suspected unattended microwave device used to activate an explosive device to thereby jam any communication signal to the unattended microwave device and prevent the activation.

Abstract: According to one embodiment, a radio has a memory for the storage of a number of records. Each record has a number of operating parameters that are used by a controller subsystem to control the radio's operation. The controller subsystem is operable to communicate with a first communication device using a first electro-magnetic signal while communicating with a second communication device using a second electromagnetic signal configured according to one of the records. The first electro-magnetic signal uses a portion of the information transfer capacity of the radio and is devoid of a counter-intelligence signal. The second electro-magnetic signal comprises a counter-intelligence signal that is operable to eavesdrop or disrupt communication of the second communication device.

Abstract: Mobile jamming attack method in wireless sensor network and method defending the same The present invention relates to a mobile jamming attack method applied in a wireless sensor network (WSN) and method defending the same. The mobile jamming attack method is a power exhaustion denial-of-service attack, possesses mobility and self-learning capability and is unable to be defended with existing defending scheme due to its attack to the routing layer of the WSN; the mobile jamming defending method employs multi-topologies scheme to defend the mobile jamming attack so that the affected area is reduced, the base station can still receive reply packets under the attack, and the jammed area can be roughly located and the track of the mobile jammer can be traced.

Abstract: An integrated circuit for achieving power reduction in a transceiver may include a jammer detector that determines an interference level corresponding to a received signal, and a transmit power detector that determines a required transmit power level for a transmitted signal. The integrated circuit may also include at least one of the following: a process monitor that determines process corners of components within the receiver and/or the transmitter, and a temperature monitor that determines a temperature of the receiver and/or the transmitter. The integrated circuit may also include a state machine. The state machine may transition the receiver from a high linearity mode to a low linearity mode if a set of operating conditions is satisfied. Similarly, the state machine may transition the transmitter from a high power mode to a low power mode if a set of operating conditions is satisfied.

Abstract: A communication breaking device for breaking communication of an apparatus which communicates by modulation and demodulation using a predetermined code sequence. The predetermined code sequence is extracted from an incoming wave and an inverted-code generator inverts the code sequence into an inverted code sequence, which is transmitted as a communication breaking wave. The phase of the inverted code sequence is advanced before transmitting as the communication breaking wave and the pilot signal, can appropriately be compensated with the advanced inverted code sequence. It can be recognized by a portable telephone that the portable telephone is deviated from a communication area for the base station. A method includes compensating the code sequence in an incoming wave by transmitting a communication breaking wave.

Abstract: According to the inventive method, a message is transmitted from an operating mobile radio network (NW2) to a terminal (MS1a) that identifies coding techniques (UEA-NW) supported by the operating mobile radio network in order to establish a connection between the terminal (MS1a) that supports a number (UEA-MS) of coding techniques and the operating mobile radio network (NW2). The terminal selects, if available, a coding technique (UEA) that is supported by the terminal and the operating mobile radio network (NW2), and the connection is operated using the coding technique selected by the terminal. If no coding technique is available that is supported by the terminal and the operating mobile radio network, the connection is operated uncoded only upon prior authorization.

Abstract: A mobile phone detection and interruption system and method are provided. The system is operative to transmit different blocking signals capable of degrading or blocking mobile phone communication in a vehicle responsive to a velocity of the vehicle reaching different pre-configured velocity levels.

Abstract: A system and method of electronic signal jamming employ a jamming signal transmitter, an electronic signal tuner and a controller. During a first time period, the transmitter transmits a jamming signal in a first frequency segment comprising first frequencies. In a subsequent second time period, the transmitter stops transmitting, while the tuner collects signals in a second frequency segment comprising second frequencies. In a subsequent third time period, the transmitter resumes transmitting the jamming signal in the first frequency segment, while at a same time the controller processes the signals collected by the tuner in the second frequency segment and the tuner tunes to a third frequency segment comprising third frequencies. Then, before any further signals are collected by the tuner, the transmitter transmits the jamming signal in the second frequency segment responsive to the signals collected in the second frequency segment and processed by the controller.

Abstract: The present invention is an integrated monitoring and communication receiver architecture. A staring receiver in accordance with the present invention may include a RF front end and a memory for storage of channel samples. The staring receiver may be capable of staring across an entire hopped communications bandwidth and storing a time-duration of channel samples within the memory to enhance acquisition and demodulation processing. The staring receiver may provide simultaneous visibility and reception of multiple signals with different time and frequency hopping patterns. Additionally, the staring receiver may be capable of spoofing whereby false cross correlations are presented to thwart geographically diverse intercept receivers.

Abstract: The reception of a first base station of a first mobile radio system in a first frequency range can be influenced by transmissions, associated with a connection, of at least one subscriber station of a second mobile radio system in a second frequency range adjacent to the first frequency range. A signaling unit of the first mobile radio station transmits a signal which is used to reduce the influence of the transmissions of the subscriber station of the second radio mobile system on the reception of the first base station in the first frequency range.

Abstract: The invention provides a radio frequency identification (RFID) tag. The RFID tag includes a receiving module, a judging module, and a jamming module. The judging module includes a first judging unit and a second judging unit. When a jamming function of the RFID tag is activated, the first judging unit judges whether a request signal received by the receiving module contains a reading command. If a judgment result of the judging module is positive, the second judging unit then judges whether an authorization code of the reading command is valid. If either the judgment result of the first judging unit or the second judging unit is negative, the judging module controls the jamming module to generate a radio frequency (RF) jamming signal.

Abstract: A medium access control (MAC) entity first computes an achievable rate region based on a total transmit power limit and a channel gain of each of a plurality of WTRUs. Next, the MAC entity selects an order of DPC among the WTRUs. A rate set for use in transmitting to the WTRUs is then selected, said rate set being within the computed achievable rate region. Then, based on the selected DPC order and rate set, a DPC entity performs DPC on a plurality of data streams intended for the plurality of WTRUs. If nested lattice-based DPC is utilized, rate compatibility is achieved by selecting proper nesting ratios corresponding to a desired data rate set. Otherwise, if binary-code based DPC is utilized, rate compatibility is achieved via selecting appropriate message input sizes for input to point-to-point coding units prior to performing DPC.

Abstract: An interference system and method of interfering with signals from a Universal Mobile Telecommunications System (UMTS) mobile device in a particular area are disclosed. The mobile device receives an access grant from a UMTS base station. The mobile device transmits a response to the base station. An interference device in the same area as the mobile device also receives the access grant and sends a corruption signal that interferes with the response to the base station.

Abstract: A clock synchronizer, for generating a local clock signal synchronized to a received clock signal, is described and claimed, along with a corresponding clock synchronization method. The clock synchronizer incorporates a reference oscillator providing a reference signal, and a synthesizer circuit arranged to synthesize a local clock signal from the reference signal. The synthesizer circuit comprises a phase-locked-loop circuit, including a phase detector receiving the reference signal, and a controllable divider arranged in a feedback path from a controlled oscillator to the phase detector, the divider being controllable to set a frequency division value N along the path to determine a ratio of the local clock frequency to the reference frequency. The clock synchronizer also incorporates a clock comparison circuit adapted to generate a digital signal indicative of an asynchronism between the local and remote clock signals. A control link is arranged to link the clock comparison circuit to the divider.

Abstract: The apparatus transmits in a first zone, for example, an aircraft, a masking signal which masks transmissions from a second zone outside of the first. By doing this a mobile cellular telephone is inhibited from connecting or attempting to connect to base-stations on the ground. A hole in the masking signal spectrum may be provided to enable connection to a base-station within the aircraft. Alternatively, a base-station within the aircraft may be arranged to transmit at a power level greater than the masking signal.

Abstract: In general, in one aspect, the disclosure describes a narrow beam jammer to generate jamming signals for the regional cellular frequency ranges for use in vehicles. The narrow beam is directed at the location of the driver so that jamming and detection of communications is limited thereto. The initiation of the jammer may also be based on other parameters such as vehicle speed and Bluetooth synchronization. Other embodiments are described and claimed.

Abstract: A mobile terminal is disclosed which includes a near field or RF ID tag (41). The mobile terminal (1) communicates with the mobile telecommunications network and is authenticated with that network using the SIM (15). The mobile terminal (1) is operable to obtain security data from the user thereof, such as a PIN or biometric data, or the mobile terminal (1) incorporates a sensor such as a light sensor, pressure sensor, heat sensor, skin resistant sensor or inertial sensor. The input device or sensor is used to confirm the identity of the user or to evaluate whether the user wishes to use the near field tag (41) to make a payment or obtain entry to a building (for example). Data from the sensor is passed to the SIM (15), which issues a command enabling the near field tag (41), via link (43). The near field tag (41) may then be read by a reader.

Abstract: Techniques for detecting wireless devices that are signaling in high proximity to a convoy or other operation and preventing messages from reaching the wireless devices. One class of the techniques uses surgical jamming methodologies that minimize power consumption and collateral interference, while being maximally inconspicuous; another class uses baiting beacons to prevent the messages from reaching the wireless devices. Still another class of techniques denies wireless devices access to a wireless network. An exemplary embodiment applies the techniques to wireless devices and beacons in a GSM network.

Abstract: A selective GPS denial system includes a plurality of GPS deniers for disrupting reliable operation of GPS receivers, a plurality of remote sensor interfaces, a gateway, and a computer management system. Each of the plurality of GPS deniers may be selectively activated. Each remote sensor interface is associated with a respective GPS denier such that each remote sensor interface effectuates the activation of the respective GPS denier. The plurality of remote sensor interfaces and the gateway are communication nodes in an ad hoc wireless network. The gateway communicates instructions to one or more of the plurality of remote sensor interfaces to selectively activate the GPS denier respectively associated therewith. The computer management system is disposed in communication with the gateway and controls the instructions communicated by the gateway, thereby selectively controlling which GPS deniers are activated.

Abstract: A method for radio interference based sensor localization. In one embodiment, the method has the steps of creating an interference signal from a first transmitter and a second transmitter, measuring phase offsets of the interference signal received by a first receiver and a second receiver, respectively, and determining the locations of the first and second transmitters and the first and second receivers from the measured phase offsets.

Abstract: Wireless telecommunications is inhibited within a limited region by generating a noise signal within a frequency range of the wireless telecommunications and broadcasting the noise signal into the limited region. A system for inhibiting wireless communications includes a radio frequency noise generator generating a noise signal within a frequency range of the wireless telecommunication. At least one antenna broadcasts the noise signal into the region. Control logic initiates or suspends broadcasting of the noise signal based on at least one control input.

Abstract: An exemplary method of controlling wireless communications includes generating a control signal that indicates a desired transmission timing of a plurality of interference signals from a respective plurality of interference devices. The control signal is transmitted to the plurality of interference devices.

Abstract: 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.

Abstract: The present invention has application to countering IEDs which are triggered remotely through a RF signal directed at, or the same operating environment as, receiver components embedded in, or part of, commercially manufactured cell phones or remote control devices. The invention exploits those situations where the underlying device (i.e., a commercial cell phone) is designed to operate in an environment where noise is characterized by an additive Gaussian noise model. The invention exploits the optimization of the matched filter for Gaussian noise by introducing a specific non-Gaussian noise. Further, the invention is directed to a family of jamming waveforms which exhibit increased effectiveness against a variety of digital and analog communications systems.

Abstract: 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.

Abstract: A jamming detector and jamming detecting method are disclosed. In accordance with the present invention, distribution of a received signal is compared with a reference distribution of a specific signal model. Deviation of the signal distribution from the reference distribution can be obtained according to the comparison results. The existence of jamming is determined according to the deviation. If the signal distribution significantly deviates from the reference distribution, it means that jamming exists. An anti-jamming circuit or algorithm can be activated only when jamming is detected, thereby power consumption is reduced.

Abstract: 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.

Abstract: A novel and improved remote object sensing device and method that is capable of sensing the presence of an object, transmitting a blocking signal to a remote control or communication member thereby preventing activation of a garage door opener circuit.

Abstract: Provided is a device for preventing eavesdropping through a speaker. More particularly, a device for preventing eavesdropping by transmitting a jamming signal through a speaker common signal line is provided, the device including: a jamming signal generator for generating a jamming signal comprising a noise signal; an amplifier for amplifying the jamming signal; and a transformer for receiving the amplified jamming signal from the amplifier and outputting the amplified jamming signal to a speaker common signal line. The device may transmit a jamming signal in an audible frequency band to the speaker common signal line, thereby rendering conversations unrecognizable to eavesdroppers when an electrical signal induced from a speaker is detected through the speaker common signal line.

Abstract: 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.

Abstract: 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.