CONTROL SYSTEM FOR TARGETING USING BISTATIC RADIO WAVE LOCALIZATION

    公开(公告)号:US20240248194A1

    公开(公告)日:2024-07-25

    申请号:US18207776

    申请日:2023-06-09

    发明人: Adnan Esmail

    IPC分类号: G01S13/66 G01S13/00 G05D1/08

    摘要: The present application discloses a method, system, and computer system for tracking a target object. The method includes (i) receiving an indication to intercept a target object from a tracking station; (ii) determining navigation to the target object based at least in part on the indication, (iii) determining whether a scatter energy is greater than or equal to a scatter threshold, and (iv) in response to the scatter energy being greater than or equal to the scatter threshold, determine the navigation to the target object based at least in part on 1) the scatter energy or 2) the scatter energy and the indication from the tracking station.

    Multimode electronically steerable monopulse radar

    公开(公告)号:US12044773B2

    公开(公告)日:2024-07-23

    申请号:US17569536

    申请日:2022-01-06

    摘要: An electronically steerable phased array and switching network connected to an FMCW radar transceiver to enable a low-cost monopulse tracking system that covers a wide field of regard using electronic beam steering. In a first mode, beamformer integrated circuits (BFICs) at each element in the array are switched synchronously with transmit/receive (T/R) switches located at the subarray level. This allows the entire aperture to be switched between transmission and reception, enabling the FMCW radar transceiver to be operated in a pulsed configuration. In a second mode, a portion of the T/R switches at the subarray level and all of the connecting BFICs at the element level are fixed in either transmitting or receiving mode, allowing separate portions of the aperture to concurrently transmit or receive. The arrangement of transmitting and receiving subarrays can be dynamically reconfigured to allow for accurate bearing and azimuth estimation using alternating monopulse.

    METHOD OF MODELLING THE UNCERTAINTY OF SENSORS IN A CENTRAL-LEVEL TRACKING ARCHITECTURE

    公开(公告)号:US20240168154A1

    公开(公告)日:2024-05-23

    申请号:US18552172

    申请日:2022-03-17

    IPC分类号: G01S13/86 G01S13/66

    CPC分类号: G01S13/867 G01S13/66

    摘要: A method of modelling the uncertainty of sensors in a central-level tracking architecture system for fusing a plurality of the sensor detections in respect to at least one sensor object. The detections acquired from the sensors correspond to at least one dimension of the at least one sensor object. For each sensor it is set a predetermined association gate minimum threshold for each dimension by setting a predetermined amount of sensor detection error for each dimension based on which an increase of each sensor detection error is modeled as a function of distance. An association gate is computed by increasing according to the modeling each sensor detection error above the predetermined association gate minimum threshold. A covariance matrix is computed for each sensor associated to each detection. A plurality of covariance matrices corresponding to all sensors is stored and made available to the central-level tracking system for fusing the plurality of sensor detections.

    TRACKING DEVICE, TRACKING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM

    公开(公告)号:US20230417895A1

    公开(公告)日:2023-12-28

    申请号:US18463967

    申请日:2023-09-08

    申请人: DENSO CORPORATION

    IPC分类号: G01S13/58 G01S13/66 G01S7/40

    CPC分类号: G01S13/58 G01S13/66 G01S7/40

    摘要: A target object is tracked based on dimensional information of an observation space including a relative velocity of the target object with respect to a sensing device for observing a reflection wave from the target object. An estimation state is acquired by estimating a state of the target object at a specific time. A reflection source of the reflection wave that gives an observation point observed at the specific time is assumed with respect to the estimation state. A state validity of the estimation state is acquired. The estimation state is updated based on the state validity expressed including a difference between dimensional information of the reflection source projected onto the observation space in the estimation state and the observation information.

    OBJECT TRACKING IN AN AREA OF DISTRIBUTED SENSORS

    公开(公告)号:US20230341539A1

    公开(公告)日:2023-10-26

    申请号:US18211756

    申请日:2023-06-20

    IPC分类号: G01S13/87 G01S13/66 G01S13/72

    摘要: A sequence of motion observations of a moving object are received from a first set of sensors. A first sequence of distance ratios are calculated based on the first sequence of motion observations. First transects are generated based on the first sequence of distance ratios. A first motion track of the moving object is produced based on: the first transects; and a map. A second set of sensors are determined employing the map. A second sequence of motion observations of the moving object are received from the second set of sensors. A second sequence of distance ratios for second pairs of the second set of sensors based on the second sequence of motion observations. Second transects are generated based on the second sequence of distance ratios. A second motion track is produced based on the first motion track, the second transects, and the map.