Abstract: A vehicle external environment recognition apparatus to be applied to a vehicle includes a position calculation processor, a three-dimensional object determination processor, an identification object identifying processor, and a vehicle tracking processor. The position calculation processor calculates three-dimensional positions of respective blocks in a captured image. The three-dimensional object determination processor groups the blocks to put any two or more of the blocks that have the three-dimensional positions differing from each other within a predetermined range in a group and thereby determines three-dimensional objects. The identification object identifying processor identifies a preceding vehicle relative to the vehicle and a sidewall on the basis of the three-dimensional objects. The vehicle tracking processor estimates a future position of the preceding vehicle to track the preceding vehicle.

Abstract: Methods, systems, and devices for cooperative radar sensing in wireless communications are described. A user equipment (UE) may measure one or more radar measurement parameters associated with a radar target, the radar measurement parameters including a set of values and a first time stamp corresponding to the measurement. The UE may receive a report, from a second UE, including a second set of values for the one or more radar measurement parameters associated with the radar target, an identifier associated with the second UE, and a second time stamp corresponding to the second set of values. The UE may generate a combined set of values based on the measured set of values, the second set of values, and the first and second time stamps. The UE may transmit a report to one or more other UEs including the combined set of values.

Abstract: In an embodiment, an automation system for a vehicle may employ a variety of diversities to enhance reliability, accuracy, and stability in automating operation of the vehicle. For example, in an embodiment, an automation system for a vehicle may include multiple sensor pods with overlapping fields of view. Each sensor pod may include multiple different sensors in an embodiment, providing diverse views of the environment surrounding the vehicle. A set of sensor pods with overlapping fields of view may also transmit their object data at different points in time, providing diversity in time. Redundancy in other areas, such as the network switches which connect the sensor pods to an automation controller, may also aid in provided fail operational functionality. In an embodiment, the sensor pods may include local processing to process the data captured by the sensors into object identification.

Abstract: A radar device includes a first radar and a second radar that are arranged at positions separated from each other, and of which detection ranges are at least partially overlapped; and a detection unit that detects at least one of a moving direction and a velocity vector of a reflection point existing in an overlapped portion of the detection ranges, based on a first detection result of the first radar and a second detection result of the second radar.

Abstract: According to an aspect of the present inventive concept there is provided an autonomous mobile robot comprising: a set of radar sensors, the sensors being arranged at spatially different positions on the mobile robot, the set including at least a first radar sensor having a first main detection lobe extending in front of the robot and a second radar sensor having a second main detection lobe extending in front of the robot, wherein the first radar sensor and the second radar sensor are arranged such that the first main detection lobe and the second main detection lobe intersect in front of the mobile robot.

Abstract: A method of detecting objects in an environment using coexisting radar devices is disclosed. According to the method, the transmission intervals of the devices are spaced apart by a wait time given by the sum of a base time, common to all the radar devices, and respective time delays, differing between devices and shorter than the base time. For each pair of devices the difference between the time delays is less than the transmission time but is at least twice a risk time in which a collision between the signals of different radar devices can be confused for an object to be detected. Given a sequence of detection cycles, a radar device is determined to have detected a target if the result of the detection is positive for a number of consecutive detections which is at least equal to the number of radar devices.

Abstract: In a ranging module, a first calculator calculates a distance from a processed signal corresponding to a current pixel. A determiner determines whether the distance calculated by the first calculator differs from a preset limit distance. A re-extractor is configured to, in response to the determiner determining that the distance differs from the preset limit distance, extract pieces of data of processing sections each corresponding to a sweep time of a transmission wave from a time-series of the processed signals saved in a data storage corresponding from a pixel previous to the current pixel in a scanning direction of a scanner to the current pixel while shifting the processing sections one after the other by a time period shorter than the sweep time. A second calculator calculates the distance from the data of each processing section extracted by the re-extractor.

Abstract: A radar system is provided that includes a first radar transceiver integrated circuit (IC) including transmission signal generation circuitry operable to generate a continuous wave signal and a first transmit channel coupled to the transmission generation circuitry to receive the continuous wave signal and transmit a test signal based on the continuous wave signal, and a second radar transceiver IC including a first receive channel coupled to an output of the first transmit channel of the first radar transceiver IC via a loopback path to receive the test signal from first the transmit channel, the second radar transceiver IC operable to measure phase response in the test signal.

Abstract: A vehicular sensing system includes a plurality of radio frequency (RF) sensor units disposed at a vehicle so as to have respective fields of sensing exterior of the vehicle. Each RF sensor unit includes a plurality of transmitting antennae and a plurality of receiving antennae, with each transmitting antenna transmitting RF signals and each receiving antenna receiving RF signals transmitted by each transmitting antenna to provide a respective field of sensing of each of the RF sensor units. A data processor of each RF sensor unit processes data provided from the respective receiving antennae and generates an output of the respective RF sensor unit. The outputs of the RF sensor units are communicated to an ECU and, responsive to the outputs of the RF sensor units, the ECU detects objects present exterior the vehicle and within the field of sensing of at least one of the RF sensor units.

Abstract: The distance estimation device acquires distances from a movable body at a first time and a second time to two ground objects, respectively, and acquires a distance between the two ground objects. Then, the distance estimation device calculates a moving distance of the movable body from the first time to the second time based on the acquired results. Thus, the distance estimation device calculates the moving distance of the movable body using arbitrary ground objects measurable from the movable body.

Abstract: The invention relates to a device and method for laboratory ice jam and ice dam radar measurement tests, the device includes a non-metal water tank, a truss spans the top of the non-metal water tank, the truss is connected with a radar plate parallel to a surface of water through a lifting mechanism, a measuring radar is provided on the radar plate, a permeable measuring barrel soaked in the water is provided below the radar plate, a barrel bottom of the permeable measuring barrel is a permeable plate capable of rising and falling, model ice blocks are provided in the permeable measuring barrel, and a handle capable of shaking the truss upwards, downwards, leftwards and rightwards is provided on the truss.

Abstract: Aspects of the present disclosure involve a method for determining a road vehicle velocity and slip angle. The current disclosure presents a technique for identifying a vehicle's velocity and slip angle, in the vehicle's coordinate frame. In one embodiment, two or more sensors are orthogonally located on the underside of the vehicle in order to obtain longitudinal and lateral velocity information for slip angle determination. In another embodiment, the two or more sensors can include an array of elements for beam steering and receiver beamforming. Spatial diversity is leveraged in identifying at least a slip angle and/or velocity of the vehicle. Doppler mapping is used as a means for slip angle determination and the clutter ridge of the Doppler map is embraced for identifying the slip angle.

Abstract: A method of operating an automotive radar system that includes a radar transmitter unit for transmitting radar waveforms towards a scene, a radar receiving unit for receiving radar waveforms that have been reflected by a target in the scene, and an evaluation and control unit for decoding range-Doppler information from the received waveforms. The method includes: transmitting a first sequence of radar waveforms (xTx) and a second sequence of radar waveforms ({tilde over (x)}Tx,k) towards the scene that differs from the first transmitted sequence of radar waveforms (xTx) by predetermined phase shifts (?k) such that each radar waveform ({tilde over (x)}Tx,k) of the second sequence has a different predetermined phase shift (?k). First range-Doppler information and second range-Doppler information are decoded. Deviations of the second range-Doppler information from the first range-Doppler information are compared to at least one predetermined deviation value.

Abstract: A system and methods for RF (Radio Frequency) penetration imaging of one or more objects in a medium, the system including a generation and reception subsystem configured to generate and receive a plurality of RF signals, an RF antenna array including a plurality of antennas, the antennas being configured to transmit the RF signals towards the medium and receive a plurality of RF signals reflected from the medium, a data acquisition subsystem configured to receive and store the reflected RF signals, and a processor configured to estimate the distance between the surface of the target medium and the antenna array, the delay between the transmitted signals and the plurality of signals reflected from the object using a dedicated frequency sub-band of the received signals, the location of the antennas at each transmitting time, and determine whether there is an object within the medium.

Abstract: A radar system for a vehicle, having at least one central control unit for sending data and for processing received data, at least one radar sensor head that is situated at a distance from the at least one central control unit and that has at least one transmit antenna for producing radar waves and at least one receive antenna for receiving radar waves, and having at least one data line between the at least one central control unit and the at least one radar sensor head, the at least one radar sensor head having an analog-digital converter for converting radar waves received by the at least one receive antenna into digital measurement data, and the external control unit having at least one analysis unit connected downstream from a data line for carrying out a processing step over at least a part of the digital measurement data.

Abstract: The disclosure includes embodiments for minimizing radar interference. In some embodiments, a method includes observing, for a time frame, an order in which Basic Safety Messages (“BSMs”) are received by a DSRC radio of the ego vehicle and broadcasted by the DSRC radio of the ego vehicle. In some embodiments, the method includes building a data structure that includes digital data that describes the order in which the BSMs were received and transmitted by the DSRC radio during the time frame. In some embodiments, the method includes assigning, by the onboard computer of the ego vehicle, radar parameters to the one or more other DSRC-enabled vehicles and the ego vehicle based on the order described by the digital data included in the data structure.

Abstract: The present invention presents a flexible, stepped frequency, radar based, imaging inspection system. The imaging inspection system can be used in airports, seaport sites, borders, postal processing centres, and sensitive sites. It comprises a millimetre-wave Stepped Frequency Continuous Wave (SFCW) radar module (2) connected to a transmitting channel and a receiving channel. The transmitting channel may comprise a frequency upconvertor (8) and the receiving channel may comprise a frequency downconvertor (10). A digital signal processing unit (14) reconstructs a conductivity profile and a permittivity profile of an object under test (OUT) from measurement data collected via a phase-array antenna or a translational stage (18) based on synthetic aperture focusing (SAF).

Abstract: In a method for determining a position of at least two sensors in relation to one another, a moving object is sensed by the at least two sensors, and at least one movement variable for the moving object is determined by one of the sensors, at least said movement variable or variables derived therefrom being used jointly for determining a position of the sensors in relation to one another. The sensor network is designed to carry out a method of said kind.

Abstract: A system for monitoring a maritime environment comprises a plurality of radio detection and ranging devices configured to perform a synchronous detection of a maritime environment object, to transmit a plurality of sensor signals respectively relating to a location of the maritime environment object over a communication network, and to receive a synchronization signal. Each radio detection and ranging device is configured to synchronize its operation according to the synchronization signal. A synchronization source is configured to generate the synchronization signal for synchronizing operations of radio detection and ranging devices, and to provide the synchronization signal over the communication network to the radio detection and ranging devices. A processing device is configured to receive the plurality of sensor signals from the plurality of radio detection and ranging devices, and to determine the location of the object in the maritime environment upon the basis of the plurality of sensor signals.

Abstract: A radar system is provided that includes a first radar transceiver integrated circuit (IC) including transmission signal generation circuitry operable to generate a continuous wave signal and a first transmit channel coupled to the transmission generation circuitry to receive the continuous wave signal and transmit a test signal based on the continuous wave signal, and a second radar transceiver IC including a first receive channel coupled to an output of the first transmit channel of the first radar transceiver IC via a loopback path to receive the test signal from first the transmit channel, the second radar transceiver IC operable to measure phase response in the test signal.

Abstract: An in-vehicle radar apparatus includes an interference determination means, a selection means, and a frequency changing means. The interference determination means determines presence or absence of interference between multifrequency CWs, which are radar waves, based on a beat signal generated by mixing a transmission signal and a received signal, which are radar waves. The selection means selects an own vehicle or an other-side apparatus, which is a party of the interference, according to an occurrence state of the interference, when the interference determination means determines that the interference is present. The frequency changing means that changes a center frequency of the multifrequency CW transmitted from the own vehicle, when the selection means selects the own vehicle.

Abstract: A method and a system for detecting geological structure of an extraterrestrial solid planet by using a single-transmitter and multiple-receiver (STMR) radar are provided. The method comprises obtaining the detection of thickness distribution and geological structure of each geological layer on the extraterrestrial solid planet by using a STMR mode, and calculating information of the dielectric coefficients and the depth of the respective geological layer. There are two detection channels having different depths of detection and detection resolutions, in which a first channel operates in a HF/VHF band for detecting geological structure of rocks on the extraterrestrial solid planet, and a second channel operates in a UHF band for detecting geological structure of regolith on the extraterrestrial solid planet. These two detection channels can cooperate with each other, ensuring accuracy and reliability of the detection.

Abstract: In a driving assistance device, A arrival position calculation unit specifies an object position on an XY plane, and calculates a predicted arrival position when an object arrives at an X axis based upon a calculated travel trajectory by calculating the travel trajectory of the object. An operation permission unit permits automatic brake operation based upon a collision determination between an own vehicle and the object, when the predicted arrival position falls within a range of an operation target width. An overlapping region extraction unit sets detection error regions on the XY plane, respectively, and extracts a region where both detection error regions set are overlapped with each other as an overlapping region. A setting unit enlarges an operation target width after an automatic-brake-operation start when a characteristic amount condition relating to a size of the overlapping region is satisfied.

Abstract: A method for interpolated virtual aperture array radar tracking includes: transmitting first and second probe signals; receiving a first reflected probe signal at a radar array; receiving a second reflected probe signal at the radar array; calculating a target range from at least one of the first and second reflected probe signals; corresponding signal instances of the first reflected probe signal to physical receiver elements of the radar array; corresponding signal instances of the second reflected probe signal to virtual elements of the radar array; interpolating signal instances; calculating a first target angle; and calculating a position of the tracking target relative to the radar array from the target range and first target angle.

Abstract: Methods and systems are provided for controlling a radar system of a vehicle. One or more transmitters are configured to transmit radar signals and tracking information is translated and coupled between radar transmitters in order to reduce target acquisition times when commencing a new track.

Abstract: An object detection device includes first information generation circuitry second information generation circuitry, region calculation circuitry, measured value interpolation circuitry, and object determination circuitry. The measured value interpolation circuitry which, in operation, calculates a first interpolated measured value of the first target object region using the second measured value of the second target object region or calculates a second interpolated measured value of the second target object region using the first measured value of the first target object region. The object determination circuitry which, in operation, determines the target object using a combination of the first measured value and the first interpolated measured value or a combination of the second measured value and the second interpolated measured value.

Abstract: A method includes determining information about a radiation pattern of a radar beam that uses a bandwidth. Based on the information, a determination is made whether a channel using at least a portion of the bandwidth is or is not available for access by mobile devices. A transmission is performed to the mobile devices of one or more specific broadcast frames configured to advertise whether the channel is or is not available for access by the mobile devices. Another method includes receiving one or more specific broadcast frames configured to advertise whether a channel is or is not available for access, wherein the channel uses at least a portion of bandwidth used by a radar beam. The channel is or is not accessed based on the one or more specific broadcast frames. The access can be contention-based or contention-free. Apparatus and program products are also disclosed.

Abstract: A multi-role or multi-function system operable to perform a multi-role or a multi-function and configured to dynamically allocate requisite resources for performing antenna functions during a frame interval of the multi-role or the multi-function by determining whether the antenna functions are completely performable in the frame interval, based on a time-sharing resource allocation procedure; and if not, allocating the requisite resources for performing the antenna functions during the frame interval, based on a time-sharing resource allocation procedure and an antenna-sharing resource allocation procedure.

Abstract: The present invention provides a system and method for obtaining data to determine one or more characteristics of a wind field using a first remote sensing device and a second remote sensing device. Coordinated data is collected from the first and second remote sensing devices and analyzed to determine the one or more characteristics of the wind field. The first remote sensing device is positioned to have a portion of the wind field within a first scanning sector of the first remote sensing device. The second remote sensing device is positioned to have the portion of the wind field disposed within a second scanning sector of the second remote sensing device.

Abstract: In sonic examples, an obstacle detection system is configured to generate and display a graphical user interface (GUI) that includes an overhead image of an area in which a vehicle is positioned, a graphical representation of the vehicle, and graphical representations of one or more obstacles, The graphical representations of the one or more obstacles and vehicle can be arranged relative to the overhead image to indicate determined real-world positions of the one or more obstacles and vehicle, respectively, relative to other features shown in the overhead (e.g., airport structure or other buildings).

Abstract: First and second radar modules include channel controllers which set different frequency bands for first and second carrier waves, respectively, and first radar transmitter and receiver which transmit radio-frequency first and second radar transmission signals generated using prescribed first and second transmission code sequences and the first and second carrier waves, which receive first and second radar reflection signals produced as a result of reflection of the first and second radar transmission signals by a target, and which convert them into baseband first and second reception signals. A signal processor performs prescribed combining processing on outputs of the first and second radar modules. The first and second radar transmission signals partially overlap with each other in main beam directivity.

Abstract: Provided is a surveillance system including a radar transmitter which transmits a detection signal to an object existing within a surveillance region, and at least one radar receiver which is installed separate from the radar transmitter within the surveillance region, receives a signal reflected by the object, and predicts a signal distance of the object which is a sum of a distance from the radar transmitter to the object and a distance from the object to the at least one radar receiver.

Abstract: A method of detecting and tracking objects using multiple radar sensors. Objects relative to a host vehicle are detected from radar data generated by a sensing device. The radar data includes Doppler measurement data. Clusters are formed, by a processor, as a function of the radar data. Each cluster represents a respective object. Each respective object is classified, by the processor, as stationary or non-stationary based on the Doppler measurement data of each object and a vehicle speed of the host vehicle. Target tracking is applied, by the processor, on an object using Doppler measurement data over time in response to the object classified as a non-stationary object; otherwise, updating an occupancy grid in response to classifying the object as a stationary object.

Abstract: There is provided a three-dimensional radar system by using the combination of commercialized usual radars for vessels at relatively low price so as to enable to strengthen the surveillance capability about aircrafts flying at low altitude and strengthen the surveillance capability on the sea and in the air to protect important facilities of a port with more developed than the conventional surveillance system of monitoring only ships or vessels in a port while overcoming the operational limitation of VTS (Vessel Traffic Service).

Abstract: An image processing apparatus includes an object distance information acquisition unit configured to acquire information regarding a distance to an object detected from acquired image data, a distance information acquisition unit configured to divide the image data into small areas and acquire object distance information for each of the small areas, a determination unit configured to determine a blurring level for each of the small areas, and a blurring processing unit configured to perform blurring processing on the image data based on the blurring level. The determination unit identifies an object located within a predetermined distance from a main object based on the distance information acquired by the object distance information acquisition unit, and determines a distance group of the identified object as a non-blur area.

Abstract: A method for controlling an antenna is provided. The antenna can rotate in a signal area and point to one of a plurality of scanning sectors of the signal area. The method includes: (a) measuring an environment identification data in an initial scanning sector of the scanning sectors and determining if the environment identification data matches an operation identification data; (b) if the environment identification data matches the operation identification data, measuring an environment evaluation signal, wherein the environment evaluation signal corresponds to the environment identification data; (c) comparing the environment evaluation signal with an operation evaluation signal, wherein the operation identification data corresponds to the operation evaluation signal; and (d) maintaining the antenna in the initial scanning sector and recording the environment evaluation signal if the environment evaluation signal is larger than or equal to the operation evaluation signal.

Abstract: Embodiments of the disclosed technology use high-speed interpolated (interdigitated) sampling for the specific purpose of GPR (Ground-Penetrating RADAR). This technology solves several issues associated with high-speed sampling in GPR which included 1) dynamic range limitations, 2) regulatory compliance issues, 3) sampler core offset error, and 4) timing errors. High-speed interpolated sampling GPR is implemented using a high-speed ADC in combination with trigger logic (such as an FPGA) and a programmable delay generator. The FPGA or other trigger logic generates a series of randomly dithered trigger pulses. A variable delay generator (or “Vernier”) is synchronously controlled in order to produce the fractional timing. The timing of the pulses is randomly or pseudo-randomly dithered, and the phase of the interpolation is shuffled in order to avoid producing discrete spectral lines in the radiated RADAR signal.

Abstract: This disclosure provides a tracking information control device. The device includes a receiver for receiving, from two radar devices, data relating to a target echo received by a radar antenna of one of the radar devices, and data relating to a target echo received by a radar antenna of the other radar device, the data being obtained from tracking the target echoes, respectively, a determiner for determining whether the target echoes indicate the same target object, an ID applier for applying the same ID to the target echoes when the determiner determines that the target echoes indicate the same target object, and a transmitter for transmitting the same IDs to the radar devices in order to inform whether the target echoes displayed by the radar devices, respectively, indicate the same target object.

Abstract: The architecture includes a passive radar using opportunistic transmitters and a plurality of active radars that cooperate in the form of a coalition to assure the surveillance of an area of space. The passive radar and the active radars that form the architecture include means for exchanging information and the passive radar is configured to adopt two alternate operating modes: (i) a “watching” mode in which the passive radar carries out surveillance of the area of space concerned and generates detection information, and (ii) an “on-demand data feed” mode in which the passive radar executes at the request of one or more active radars an object search in a given sector of the area under surveillance or an analysis of certain characteristics of the signal received in a given sector.

Abstract: A radar system for detecting a single object from a plurality of objects and calculating 4D information of said object may include a first radar for obtaining first positional information of a first object, a second radar for obtaining second positional information of a second object and a computer for comparing the first positional information with the second positional information to determine if the first object is the same as the second object and combining the matched first positional and second positional information into 4D information.

Abstract: There may be situations in which a ship at sea is lost and GPS is not available due to jamming, and neither a position fix nor GPS is available, or the heading and attitude sensors are degraded. A system and method allow estimating a ship's heading and pitch using radar range measurements, multiple antennas and satellite ephemeris data.

Abstract: Respective sector radars generate first and second transmission signals by multiplying any one Spano code sequence and any one orthogonal code sequence, selected among 2(N+1) first and second Spano code sequences which are different from each other and 2(N+1) first and second orthogonal code sequences which are different from each other, in a predetermined order in each transmission period, where N is an integer of 1 or greater. Respective sector radars convert the first and second transmission signals into first and second high frequency signals, and transmit the first and second high frequency signals through first and second transmission antennas. The 2(N+1) first orthogonal code sequences and the 2(N+1) second orthogonal code sequences used in the respective sector radars are orthogonal over transmission periods of M multiples of 2(N+1), where M is an integer of 2 or greater.

Abstract: An active electronically scanned array radar system and method uses a coherent, stable timing reference to transmit phase synchronized radar signals from a plurality of receiver/exciter elements. A global positioning system (GPS) carrier phase disciplined oscillator receives the GPS carrier signal at a GPS receiver. The GPS carrier contains phase and timing information to phase synchronize the local clock with the GPS carrier to produce a reference clock signal. The reference clock signal is used to synchronize a frequency synthesizer oscillator clock and generate a stable timing reference signal at a frequency significantly greater than the reference clock frequency. The stable timing reference is used to transmit radar signals in a receiver/exciter pair, the radar signals phase synchronized with the GPS carrier signal. Each receiver/exciter element generates its own stable timing reference based on a common GPS carrier.

Abstract: Techniques are disclosed for determining characteristic feature(s) of a vehicle travelling on a roadway, comprising: a detector, which is directed towards the roadway and is configured to measure the movement vector of the vehicle at a current location and time, a tracking unit, connected to the detector, for calculating a target location of the vehicle at a target time on the basis of current location and time and movement vector, a first radar sensor, connected to the detector, for transmitting a radar beam directed towards the current location, receiving a reflected radar beam, and determining a frequency spectrum thereof, a second radar sensor, connected to the tracking unit, for transmitting a radar beam directed towards the target location at the target time, receiving a reflected radar beam and determining a frequency spectrum thereof, and an evaluation unit for generating characteristic feature(s) of the vehicle from the determined frequency spectra.

Abstract: The present invention relates to a method for separating transmitted signals in radar systems and an associated radar system. In the method, the signals for transmission are shared among multiple subcarriers by means of OFDM, which subcarriers are assigned to the transmitting antennas according to a distribution scheme. In this distribution scheme, each subcarrier is assigned to one transmitting antennas only. The subcarriers assigned to a given transmitting antenna are spread over the entire signal bandwidth. In this way, very high dynamics may be achieved while retaining complete orthogonality of the signal paths.

Abstract: Herein is presented, a low power on-die 60 GHz distribution network for a beamforming system that can be scaled as the number of transmitters increases. The transmission line based power splitters and quadrature hybrids whose size would be proportional to a quarter wavelength (˜600 ?m) if formed using transmission lines are instead constructed by inductors/capacitors and reduce the area by more than 80%. An input in-phase I clock and an input quadrature Q clock are combined into a single composite clock waveform locking the phase relation between the in-phase I clock and quadrature Q clock. The composite clock is transferred over a single transmission line formed using a Co-planar Waveguide (CPW) coupling the source and destination locations over the surface of a die. Once the individuals the in-phase I and quadrature Q clocks are required, they can be generated at the destination from the composite clock waveform.

Abstract: In cognitive radar information networks (CRINs) human-like cognitive abilities of attention and intelligence are built into radar systems and radar information networks (RINS) to assist operators with information overload. A CRIN comprises a plurality of radar sensing nodes monitoring an environment, a repository or memory, and a cognitive radar controller. Each radar sensing node includes a radio frequency transmitter, a transmitting antenna, and a receiver and receiving antenna. The receiver includes a digital radar processor for generating receiver information from the received echoes about the environment. The repository is configured for receiving and storing the receiver information generated by the digital radar processor.

Abstract: A method of positioning a plurality of radar units in a defined area amongst one or more legacy radar units that provide legacy radar coverage in the defined area is disclosed. The steps of identifying a location of each legacy radar unit, setting a threshold altitude, and determining a legacy occultation of each legacy radar unit from a landscape level up to the threshold altitude are also disclosed. Mapping the legacy occultation of the legacy radar units to provide a three dimensional occultation map in the defined area and locating gaps below the threshold altitude in the legacy radar coverage as a function of the occultation map are also disclosed. Identifying a plurality of sites as a function of the gaps where the sites are accessible to receive a radar unit is also disclosed. Determining an anticipated radar coverage of a radar unit positioned at each of the sites and determining a reduction in the gaps as a function of the anticipated radar coverage are also disclosed.

Abstract: A multiple-sensor tracking method, notably implemented in an air traffic control system, making it possible to reduce the latency time introduced by the tracking system, characterized in that the correlation (302) and association (303) functions work on the basis of membership of the detections (502) and of the tracks (503, 504) to cells (510, 511) defining a subdivision into a grid (501) of the surveillance area represented on a stereographic projection plane.

Abstract: A mobile object detecting apparatus includes first radiation detecting means; and second radiation detecting means for radiating an electromagnetic wave having the same frequency as the electromagnetic wave radiated by the first radiation detecting means such that the radiated electromagnetic wave passes near a point in the first radiation detecting means from which the electromagnetic wave is radiated, and detecting a standing wave which is generated due to reflection of the radiated electromagnetic wave at an object; wherein a distance, over which the electromagnetic wave radiated by the first radiation detecting means travels until it reaches near the first radiation detecting means, corresponds to a distance of an integral multiple of a wave length of a half cycle of the electromagnetic waves radiated by the radiation detecting means plus a wave length of a predetermined period which is smaller than the half cycle.