Abstract: A method for calibrating a target simulator for an active environment detection system includes: calibrating a complete signal path comprising a first signal path and a second signal path by determining a first deviation of a first value of at least one signal parameter from a first reference value of the at least one signal parameter; calibrating one of the first signal path and the second signal path by determining a second deviation of a second value of the at least one signal parameter from a second reference value of the at least one signal parameter; and calibrating the other of the first signal path and the second signal path by offsetting of the first deviation with the second deviation.

Abstract: The disclosure relates to a simulation device for motor vehicle monitoring, wherein a radar sensor (2) and a camera sensor (3) and a LiDAR light receiving sensor (1) and a computer (4) are present, wherein the radar sensor (2) can be controlled via a radar signal transmitter, and the camera sensor (3) can be controlled via a lens, and the LiDAR light receiving sensor (1) can be controlled via a light transmitter.

Abstract: A system, method, and apparatus for remotely controlled or even autonomous drone positioning control includes a drone, positioning control subsystem, subcontroller, positional or inertial sensor, processor, image sensor, and ground control device, and is configured to i) ascertain a geographical area having a geofence, ii) track at least one subject and an associated physical or digital marker within the geographical area, iii) recognize and process at least one marker geofence, iv) execute at least one positioning plan data set having at least one positioning path, and v) fly the drone per the data sets and paths without crossing a geofence or colliding with any obstacle. The present invention may also be configured to execute one or more commands that cause the drone to switch its position or path relative to priority or sequence-oriented commands, or to move the drone within a certain distance from the marker.

Abstract: A method for building a coherent radar cross-section (RCS) model database for real-time dynamic simulation of range-Doppler radars is disclosed. The database may be used with radar sensors that employ different waveforms. A pre-processing operation before the dynamic simulation performs fast Fourier Transforms (FFTs) to interpolate the target frequency responses from the database to match the frequency samplings of the radar used in the dynamic simulation. The method determines the frequency responses of the targets to a reference chirp in a coherent processing interval (CPI) and the radial velocities of the targets relative to the radar at the time of the reference chirp. The method extrapolates, using FFTs, the frequency responses of the targets to the reference chirp across the velocity dimension based on the relative radial velocities to determine the frequency responses of the targets to the other chirps across the CPI, reducing the computational burden for the simulation.

Abstract: A wireless sensor is provided for use in near-to-zero or zero-power consumption applications. The sensor includes a sensing circuit, a modulator connected to the sensing circuit and configured to modulate an input signal using variations in input impedance produced by the sensing circuit to produce a modulated output signal, and a transmitting element such as an antenna to transmit the modulated output signal to a receiver. In some implementations, the sensor includes a pilot sequence generator that may be powered by a received signal from a transmitting node. The input signal is thus modulated by both pilot data and the input impedance. The input signal may be received from the transmitting node. Alternatively, a power source may be provided in the wireless sensor for generating the input signal and/or pilot data.

Abstract: A dialogue system including a processor, a memory, an audio input apparatus, an audio output apparatus, a touch input apparatus, and a display unit. The processor receives an input from the voice or a touch input apparatus, analyzes the content of the input, and selects a scenario corresponding to the input data from preset scenario information. The processor generates the output data specified in the scenario, calculates the priority of the input data, and determines the presence or absence of the scenario being prepared for the output data. When there is the scenario under generating the output data, the processor changes the output method of the scenario to be executed based on the priority.

Abstract: A method for simulating a trajectory of a radar target includes the procedures of determining a simulated trajectory of the simulated target and determining a simulating vehicle trajectory for a simulating vehicle. The simulating vehicle trajectory is defined according to a simulation profile. The simulation profile at least includes a spatial simulation profile and a signal delay profile. The method further includes the procedures of maneuvering the simulating vehicle according the spatial simulation profile, receiving a radar signal by the simulating vehicle and retransmitting a signal toward the radar at least according to the signal delay profile.

Abstract: The invention relates to a method for testing the electromagnetic compatibility of a radar detector with at least one onboard pulse signal transmitter, wherein said radar detector and each onboard transmitter are part of the same platform, by means of eliminating the onboard component in the signals received by said radar detector, where the onboard component corresponds to the mix of the direct component and the reflected component onboard, said method comprising a training phase allowing the detected pulses to be divided into classes, grouping together the pulses for which at least two characteristics have a common range of values, and a phase of eliminating, the pulses that belong to the selected classes.

Abstract: A self-contained satellite-navigation-based (SatNav-based) method and micro system is disclosed, wherein SatNav-derived (e.g., GPS-derived) position and velocity measurements are obtained and processed to achieve a low cost, micro size, real-time solution for the position and velocity of the carrier relative to a vertical and/or horizontal plane of previously measured location and heading, and for the slant range from a fixed position located on said vertical or horizontal plane. The method includes two parts: 1) a method for defining both the spatial orientation of the vertical and/or horizontal plane of interest, along with a selected fixed position of interest on one of those planes, and 2) a method for obtaining the real-time relative position and velocity of the carrier relative to the plane(s) of interest, and its position relative to the fixed position of interest.

Abstract: A portable anechoic chamber is described herein. The chamber includes a housing including an interior, and the housing defines an opening sized to provide access to the interior. A layer of radar absorbent material lines the interior, and a reflective device is positioned within the interior. The reflective device is positioned to receive and reflect a radar beam emitted from a radar source.

Abstract: A process of screening direction finding solutions to reduce the number of valid direction finding solution rejections while maintaining an acceptable level of wild bearings being reported utilizing the proximity of the correlation values of the highest correlation and second highest correlation given a correlation pattern of a detected signal of unknown origin.

Abstract: Switching between and/or combining various multi-transceiver wireless communication techniques based on a determined characteristic of a network or a wireless link is described herein. As an example, a characteristic such as signal to noise ratio (SNR), multi-path scattering, available bandwidth, or the like, can be determined. The characteristic can then be compared with suitable thresholds for various multi-transceiver communication techniques, such as MIMO, multi-channel concatenation, channel diversity, and so on. Based on a comparison of the characteristic and the thresholds, a suitable multi-transceiver technique can be selected and implemented for the wireless link. Accordingly, a network can provide increased data rates and/or channel quality from a multi-transceiver technique that is most suited to prevailing conditions of the wireless network/link.

Abstract: A method may include a processing system of a channel sounding receiver having a processor detecting a synchronization signal within a time and frequency resource grid of a base station and measuring a channel property at a first location based upon the synchronization signal that is received at the first location. The method may further include the processing system receiving at a second location, from the base station, the synchronization signal, measuring a channel property at the second location based upon the synchronization signal that is received at the second location, and selecting between the first location and the second location for a deployment of a customer premises equipment based upon the channel property at the first location and the channel property at the second location.

Abstract: An example pointing system includes a sensor that measures change in angular position, a first GNSS antenna, and a second GNSS antenna mounted to a rigid body that is removable from the pointing system after calibration of the sensor. The GNSS antennas have a fixed, known baseline. The pointing system includes at least one GNSS receiver with first and second RF inputs respectively coupled to the GNSS antennas. The at least one GNSS receiver includes respective paths to process GNSS signals received from the first and second RF inputs. The pointing system includes at least one processor, communicatively coupled to the sensor and receiver, configured to: determine initial attitude of the pointing system based on the processed GNSS signals; calibrate the sensor using the determined initial attitude; determine a pointing solution for the pointing system based on measurements from the calibrated sensor without GNSS signals from second GNSS antenna.

Abstract: A computer-implemented method for simulating an image of a terrain scanned by a simulated radar beam generated by a simulated radar antenna, comprising: calculating on a first processor a power reflected by the terrain while an orientation of the simulated radar antenna is varied within a scanning antenna range; calculating on a plurality of second processors a convolution power for the terrain while the orientation of the simulated radar antenna is varied within the scanning antenna range, said calculating on a first processor and said calculating on a plurality of second processors being performed concurrently and in parallel; combining the power reflected by the terrain and the convolution power, thereby obtaining combined data; generating a radar image using the combined data; and outputting the radar image.

Abstract: Various wireless systems may benefit from suitable sharing of antennas and related equipment. For example a various avionics systems may benefit from systems and methods for providing a distance measurement equipment L-band shared antenna. Circuitry can include an interface to a bottom omni-directional antenna. The circuitry can also include a radio frequency splitter in switchable communication with the interface to the bottom omni-directional antenna. The circuitry can further include an interface between the radio frequency splitter and a distance measurement equipment receiver. The circuitry can additionally include an interface between the radio frequency splitter and a surveillance receiver.

Abstract: Various technologies for mitigating distortion in coherent image products generated from SAR data are described herein. Synthetic aperture radar (SAR) datasets generated based upon SAR returns from first and second passes of a SAR platform over a scene are received. The SAR datasets can be co-notched at matching sample indices to improve coherence of SAR images generated from the datasets. Windowed SAR data is generated by applying independent windows to subsets of each of the datasets to reduce sidelobe levels of their image impulse responses. Coherent image products are generated based upon the windowed SAR data, wherein an image quality of the coherent image products is improved as compared to coherent image products generated based upon the SAR datasets.

Abstract: The present disclosure relates to a method, a device and a computer-readable storage medium for seeking help and a smart footwear. The method includes detecting a user operation with respect to the smart footwear, and executing a help seeking operation using the smart footwear when the user operation matches a predefined alarm operation.

Abstract: The invention relates to a method and system for testing and evaluating a response of an automotive radar system for a specific automotive safety scenario, wherein the method and system generates a simulated reflected radar signature corresponding to at least one virtual target in a specific virtual scenario. The simulated radar signature is generated from one or more of: a pre-recorded real reflected radar signature from at least one real target in a specific real scenario, an analytical representation of a radar target signature from at least one virtual target in a specific virtual scenario.

Abstract: Methods and systems for cyber secure data communications are provided. In some embodiments, a method for transmitting data comprises: performing a marker-based data encoding process to embed a digital watermark into each of a plurality of original data flows to be transmitted to a plurality of receivers; performing a non-orthogonal multiple access process to allocate transmission powers to the plurality of original data flows, such that the plurality of original data flows are simultaneously superposed on a carrier frequency to generate a superposed signal; performing a noise modulation process to modulate the superposed signal to generate a noise-like signal and a reference noise signal; transmitting the noise-like signal and the reference noise signal through orthogonally polarized antennas; and performing a portal-based data integrity analysis process to check whether a receiver in the plurality of receivers is compromised or manipulated.

Abstract: An aerial survey image capture system for a survey aircraft is disclosed. The system comprises a camera system arranged to capture successive images of ground beneath a survey aircraft. The camera system has associated camera parameters, and a loss of separation (LOS) avoidance system for a survey aircraft. The LOS avoidance system is arranged to determine a predicted closest point of approach (CPA) distance between the survey aircraft and the nearby aircraft based on their locations and movements, compare the CPA distance with a defined minimum separation distance corresponding to a LOS, and determine an estimate for at least one navigation parameter of the survey aircraft required for the CPA distance to remain above the defined minimum separation distance. The system is further arranged to modify camera system parameters so as to at least partially compensate for a change in survey efficiency when the estimated at least one navigation parameter is used to navigate the survey aircraft.

Abstract: Threat modeling methods include, in response to receiving user input using computing device interfaces: storing threat model components, threats, and security requirements in a database; associating each threat with a component; storing an indication of whether each security requirement is a compensating control; associating each compensating control with one of the threats; displaying a diagram of one of a system, an application, and a process, using visual representations of the components, the diagram defining a threat model, displaying a threat report displaying each threat associated with one of the components included in the threat model; and; displaying a report displaying each compensating control associated with one of the threats included in the threat report. Threat modeling systems include one or more computing devices coupled with a database and having user interfaces for storing, associating, displaying, and editing the components, threats, and security requirements in various ways.

Abstract: Aspects of the subject disclosure may include, for example, a repeater device having a first coupler to extract downstream channel signals from first guided electromagnetic waves bound to a transmission medium of a guided wave communication system. An amplifier amplifies the downstream channel signals to generate amplified downstream channel signals. A channel selection filter selects one or more of the amplified downstream channel signals to wirelessly transmit to the at least one client device via an antenna. A second coupler guides the amplified downstream channel signals to the transmission medium of the guided wave communication system to propagate as second guided electromagnetic waves. Other embodiments are disclosed.

Abstract: A device for calculating an indication of power of a received radio signal is disclosed. In one aspect, the device includes a receiver for receiving a plurality of logarithmic values representing a sequence of measurements of power of the received radio signal, and circuitry for determining a sum of the plurality of logarithmic values. The circuitry includes an adder for pairwise summing of two logarithmic values and a plurality of memory registers. The plurality of memory registers are arranged to store intermediate sums of logarithmic values. The circuitry is arranged to control the adder to sum the plurality of logarithmic values by a recursive procedure such that the first and the second logarithmic value in individual summations of the recursive procedure represent substantially same number of power measurements.

Abstract: A device includes a test enclosure defining a cavity forming an anechoic chamber, having a test probe placed inside the cavity. The cavity comprises an aperture against which the radiating surface of antenna is positioned. The device includes a microwave-frequency test signal generator and a receiver for microwave-frequency signal emitted by the antenna under test and for measuring its amplitude and its phase in relation to a reference. Depending on the depth of the cavity and the dimensions of the radiation pattern of a test probe, the device comprises one or more test probes placed in fixed positions in the cavity or a mobile probe that can be positioned in various locations of the cavity, the probe or probes being configured and arranged to illuminate the whole active surface of the antenna and that the radiation pattern of each radiating element illuminates at least one test probe.

Abstract: An unmanned aerial vehicle (UAV) radar apparatus may be used in aircraft detection and avoidance. The radar apparatus may include an RF front end configured to transmit and receive RF signals, a filtering module coupled with the RF front end module that filters RF signals received at the RF front end module, and a target data processing module coupled with the filtering module that detects and identifies one or more targets based on the filtered RF signals. Avoidance procedures may be initiated based on the identification and detection of one or more targets.

Abstract: The present invention relates to timing margin adjustment circuits using adjustable delay circuits. An example adjustable delay circuit may include a signal line, an output circuit, and a plurality of delay circuits. Each of the plurality of delay circuits may be configured to provide respective delay amounts that are different from each other, and where a first one of the plurality of delay circuits, which may be arranged most adjacently to the output circuit, being smaller in delay amount than other ones of the plurality of delay circuits. Each of the plurality of delay circuits may include an input node and an output node, and a selected one of the plurality of delay circuits connected at its input node to the signal line and at its output node to the output circuit, the rest of the plurality of delay circuits being disconnected from the signal line and the output circuit.

Abstract: A measuring system for measuring a communications device comprising an antenna-array. The measuring system comprises a controller, a measuring device, a measuring antenna and a device mount. The measuring device performs measurements with regard to the communications device. The device mount rotates the communications device about at least one axis. The controller sets a maximum gain direction of the antenna-array. The controller (i) controls the device mount to rotate the communications device, compensating for the set maximum gain direction, until the set maximum gain direction meets a direction of the measuring antenna with respect to the communications device, and (ii) determines an actual maximum gain direction of the antenna-array by iteratively rotating the communications device and determining a respective gain for each iteration, and determines the actual maximum gain direction as a rotation of the device mount that corresponds to the iteration of maximal gain.

Abstract: A method and apparatus for deriving indoor/outdoor classification information for call data for a wireless communication network. The method comprises identifying a set of subscriber call data records relating to vehicular calls, deriving a physical channel measurement threshold value based at least partly on physical channel measurement values for the subscriber call data records identified as relating to vehicular calls, and classifying subscriber call data records for the wireless communication network as indoor subscriber call data records and outdoor subscriber call data records based at least partly on a comparison of physical channel measurement values for the subscriber call data records with the derived physical channel measurement threshold value.

Abstract: The present disclosure relates to a delay device for checking a frequency modulated continuous wave (FMCW) radar, measuring a distance of a target and a relative velocity using microwaves and millimeter waves of a frequency modulated continuous waveform, and may include an input/output unit that is configured to input or output a control setting value, a controller that is configured to output a control signal corresponding to the control setting value input by an operator through the input/output unit, and a transceiver that is configured to delay an FMCW radar signal, for output, by a time delay corresponding to a distance of a target through a programmable single chip delay line according to the control signal of the controller, and configured to shift a frequency of the time-delayed FMCW radar signal by a Doppler frequency, and attenuate the frequency-shifted FMCW radar signal for output.

Abstract: Apparatus comprises a radio channel emulator of a radio system and a combiner. The combiner receives antenna data defining a characteristic radiation pattern of each predetermined antenna element of a predetermined antenna array; forms modified antenna data associated with a predetermined number of modified antenna elements by weighting the antenna data with a predetermined coefficient data; forms modified radio channel data by combining a predetermined radio channel data and the modified antenna data; and feed the modified radio channel data to the radio channel emulator; and the emulator receives at least one signal each of which being associated with a modified antenna element and perform emulation with the at least one signal and the modified radio channel data.

Abstract: An array of induction coil sensors is used to monitor, from multiple locations, the strength of a magnetic field generated by a wire to be traced. The magnetic field strength data is used to determine the location and orientation of the wire. In one embodiment, the sensor array is incorporated into a test instrument. The screen of the test instrument provides a graphical user interface that shows the orientation of the wire and indicates the location of the wire relative to the instrument.

Abstract: A method and software implementation for spatial pattern analysis. A user-guided test procedure is implemented to measure features of an antenna under test to determine the antenna's far-field patterns. The antenna features include RF amplitude or phase, and position and orientation relative to a receiving object.

Abstract: Pre-processing is applied to a raw VideoSAR (or similar near-video rate) product to transform the image frame sequence into a product that resembles more closely the type of product for which conventional video codecs are designed, while sufficiently maintaining utility and visual quality of the product delivered by the codec.

Abstract: A computer-implemented method and system for automatically detecting an obstacle from a moving vehicle using a planar sensor mounted on the vehicle.

Abstract: The problem of simulating movement of multiple GNSS or regional navigational satellite system satellites across the sky within a test environment is solved by the technology disclosed using a test chamber with a plurality of zones bounded by azimuth and elevation limits, positioning at least one directional antenna in each zone, driving each antenna individually with a GNSS simulator capable of producing multiple positioning signals for a plurality of satellite sources in a single zone, and coordinating among GNSS simulators a simulated orbital movement of the satellite sources from one zone to an adjoining zone to produce changing angles of arrival for the positioning signals during a test. Both methods and systems implement this technology.

Abstract: A method and arrangement for detecting an object in a radar field (2.2) in which a simulator (3) arranged in a stationary manner in a radar field (2.2) of a radar device (2), which is outfitted with a radar transmitter (2.1) and a radar receiver (2.3), is suitable for simulating a speed profile which is defined by temporally consecutive speed changes. The simulator (3) is actuated in such a way that it simulates at least one predetermined atypical speed profile which cannot be associated with any expectable moving object so that, in addition to reflection signals from objects moving through the radar field (2.2), the radar receiver (2.3) receives simulator signals caused by the simulator (3), and status information associated with the atypical speed profile derived from these simulator signals.

Abstract: A method, system and computer program product for calibrating and operating a radar apparatus provides for obtaining calibration response data from, for example, a radar cylinder and a plurality of radar columns, prior to assembling the radar cylinder and plurality of radar columns into an assembled radar apparatus. The calibration response data for the exemplary radar cylinder and the plurality of radar columns is evaluated to provide a simulated response of the assembled radar apparatus. Actual measured responses from the assembled radar apparatus may then be correlated with the simulated response through use of a look-up table. The particular method, system and program product for calibrating and operating the radar apparatus provides for avoidance of field calibration of the assembled radar apparatus, which is generally neither desirable nor feasible under hostile conditions.

Abstract: According to some embodiments, a system is provided for simulating a cluster of reflections. The system includes an array of antenna elements distributed in space over a solid angle having an angular spread. The solid angle is substantially less than a full sphere and each antenna element has a spatial orientation. The system also includes a spatial environment simulator connected to the antenna elements and configured to apply one of excitations to the antenna elements and weights to signals from the antenna elements. The combination of the spatial distribution of the antenna elements, the orientation of the antenna elements, and the weighting applied by the variable path simulator simulates a near field arising from a cluster of reflections of a multipath environment.

Abstract: An apparatus and method to generate and detect virtual targets. Position information for one or more virtual targets is calculated onboard a vehicle from real position information obtained from GPS satellites or other external or internal sources. This virtual position information is coded, mixed with a carrier frequency, amplified, and radiated to a nearby test vehicle, such as an aircraft. The amplitude of the radiated signal is adjusted such that the signal containing the virtual position information is received by the test aircraft only. The radiated signal thus adjusted is below the detection threshold of any aircraft further away. The test aircraft decodes the signal and interprets the decoded virtual position information as real aircraft in its vicinity. The coded signals may be structured to comply with the requirements of the FAA's ADS-B system. The apparatus may be mounted on the test aircraft itself, or on a nearby aircraft.

Abstract: A high fidelity simulation of Doppler that may exactly replicate the phenomenology of the physical world. Compute the linear (Line of sight) kinematics (Slant Range, Radial Velocity, and Radial Acceleration) for each of a multiplicity of emitter-receiver pairs in accordance with exact 3D vector mathematics. Smoothly interpolate the linear kinematic parameters to produce accurate instantaneous values of these parameters at sample rates sufficient to produce negligible error effects in the presence of realistic aircraft maneuvers. Calculate the Doppler frequency, in accordance with well known physics, from the emitter carrier wavelength and a high sample rate. Calculate the Doppler effect as a differential phase (Doppler frequency×sample time) and apply the effect as incremental phase shifts to the carrier signal.

Abstract: A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft.

Abstract: An optical modulator comprising an input suitable to receive an optical carrier, and two Mach-Zender modulators in parallel, which constitute two different optical paths, the whole circuit constituting a third Mach-Zender modulator, the optical modulator being characterized in that: the first Mach-Zender modulator is provided with an electrode suitable to carry two signals, each obtained by the sum of the two tones fR and fD, of equal power but dephased of ?/2, and with an electrode for realizing a Single Side Band modulation of the tones fR and fD; the second Mach-Zender modulator is biased by means of a DC electrode; the third Mach-Zender modulator comprising an electrode suitable to realize the reversal of the optical carrier phase of the signals deriving from the first and the second Mach-Zender modulator, so as to suppress the optical carrier and thus obtaining only the tones fR and fD in the optical spectrum.

Abstract: A simulation device and a system and method for using the simulation device are disclosed. The simulation device may contain a plurality of antenna elements positionable on or near a radar or other sensing device. The simulation device may be configured to control the plurality of antenna elements to transmit signals that simulate a reflection of an electromagnetic signal off of one or more targets of particular sizes at particular azimuths, elevations, distances, trajectories, and/or velocities.

Abstract: A method for determining target echo detection efficacy of a signal processing algorithm of a radar system involves generating a simulated noise complex envelope sequence, generating a simulated radar target echo signal complex envelope pulse sequence and adding the simulated noise complex envelope sequence to the simulated radar target echo signal complex envelope pulse sequence, thereby producing simulated noisy radar target echo signal complex envelope sequence. The simulated noisy radar target echo signal complex envelope sequence is inputted into the signal processing algorithm and the output of the signal processing algorithm is analyzed to determine target echo detection efficacy of the signal processing algorithm.

Abstract: A calibration system for a dual polarization radar system with built in test couplers has been developed. The system includes a dual polarization radar transmitter antenna that generates a transmission pulse. A test coupler is located behind the antenna that reads a sample of the transmission pulse a test signal. A calibration circuit receives the sample of the transmission pulse and generates a test signal that simulates a desired atmospheric condition. Finally, a test antenna transmits the test signal to the dual polarization radar transmitter antenna for calibration of the system.

Abstract: Techniques for providing synthetic air traffic management in a fast-time environment are disclosed. In one embodiment, a method of providing a closed-loop air traffic management simulation gateway between a decision support tool (DST) and an airspace modeler includes receiving airspace simulation data from an airspace modeler. The airspace simulation may be converted to emulated radar signals at an update interval. The emulated radar signals may be transmitted to a decision support tool for analysis. A recommendation may be received from the decision support tool based on the emulated radar signals, which may be used to generate a synthetic actor response based on the recommendation. The synthetic actor may provide the response to the airspace modeler to enable updating the airspace simulation data. In this manner the design of more efficient airspace routes, arrival and departure routes and procedures may be more quickly achieved.

Abstract: A method, system and computer program product for calibrating and operating a radar apparatus provides for obtaining calibration response data from, for example, a radar cylinder and a plurality of radar columns, prior to assembling the radar cylinder and plurality of radar columns into an assembled radar apparatus. The calibration response data for the exemplary radar cylinder and the plurality of radar columns is evaluated to provide a simulated response of the assembled radar apparatus. Actual measured responses from the assembled radar apparatus may then be correlated with the simulated response through use of a look-up table. The particular method, system and program product for calibrating and operating the radar apparatus provides for avoidance of field calibration of the assembled radar apparatus, which is generally neither desirable nor feasible under hostile conditions.

Abstract: System that measures absolute or additive phase noise includes a power divider for dividing an input RF signal, a local oscillator, two mixers, each arranged in a path of a respective signal component from the power divider and receiving input from the power divider and local oscillator, two digital radio frequency memories, each associated with a respective mixer and receiving an input signal therefrom, and a digital signal processor that receives signals from the digital radio frequency memories and outputs a digital data stream indicative of measured phase noise. For absolute phase noise measurement, phase noise of the input RF signal is provided. For additive phase noise measurement, a unit under test is arranged in one of the paths between the power divider and the mixer. The system may be interposed between a radar transmitter of a radar environment simulator and a radar receiver coupled to a radar target display.

Abstract: Devices, systems and methods are disclosed which relate to reproducing and testing a simulation of electromagnetic propagation of multiple Radio Frequency (RF) jammers in an environment to determine the effectiveness of the jammer configuration. In some configurations, a multi-jammer simulator renders the electromagnetic propagation of a multiple jammer scenario, including multiple RF jammers onboard vehicles traveling through the environment, and records a multi-waveform output of the multiple jammer scenario to a recordable medium. A multi-waveform generator reads the multi-waveform output from the recordable medium and physically reproduces a plurality of waveforms consistent with the multi-waveform output. The plurality of waveforms is substantially similar to a physical reproduction of the multiple jammer scenario. An RF receiver, placed within a range of effectiveness of the multi-waveform generator, attempts to receive a signal from an RF transmitter during reproduction of the multi-waveform output.