Multi-Radar System
    4.
    发明公开
    Multi-Radar System 审中-公开

    公开(公告)号:US20240337746A1

    公开(公告)日:2024-10-10

    申请号:US18747691

    申请日:2024-06-19

    Applicant: Google LLC

    CPC classification number: G01S13/88 G06F3/011 G06F3/017 G06V40/20

    Abstract: Techniques and apparatuses are described that implement a multi-radar system within a device and optimize operation of the multi-radar system. The multi-radar system includes two or more radar circuits located at different positions on the device. The multi-radar system also includes an optimization controller, which controls operational states of the radar circuits. In particular, the optimization controller determines respective operational states of the radar circuits to optimize performance of the multi-radar system under certain constraints. For example, the optimization controller can alter the respective operational states for different radar circuits responsive to detecting various trigger events. In this way, the optimization controller can selectively alter the operational states of the radar circuits for various situations.

    Method for estimating nondirectional wave spectrum from sea echoes of multiple high radar frequencies

    公开(公告)号:US12025730B2

    公开(公告)日:2024-07-02

    申请号:US17711076

    申请日:2022-04-01

    CPC classification number: G01S7/354 G01S7/356 G01S13/88 G01S7/41 Y02A90/40

    Abstract: The disclosure provides a method for estimating the nondirectional wave spectrum from the sea echoes of multiple HF radar frequencies. The method includes: dividing the radar detection area into a plurality of fan-shaped units at an equal range interval and angle interval according to the distance resolution and the angular resolution of an HF radar; obtaining the Doppler spectrum from the sea echo of a single radar frequency at a fan-shaped unit by performing the first fast Fourier transform (FFT) in distance dimension, the second FFT in Doppler frequency dimension and the digital beamforming; extracting the positive first-order peak and the negative first-order peak from the aforementioned Doppler spectrum by the peak-searching method; and selecting the stronger first-order peak σR(1)(ω); dividing the second-order spectrum on the stronger first-order peak side into an inner second-order spectrum and an outer second-order spectrum.

    Evaluating locating measurements of a surroundings sensor for a motor vehicle

    公开(公告)号:US12024178B2

    公开(公告)日:2024-07-02

    申请号:US17279336

    申请日:2019-10-01

    Abstract: A method for evaluating locating measurements of a surroundings sensor for a motor vehicle. The method includes: associating locating measurements with an object described by an estimated object state, for the locating measurements in each case an association probability being determined for the association of the locating measurement with the object; estimating instantaneous state parameters of the object, including an adaptation of the state parameters to the locating measurements associated with the object, weightings of the locating measurements associated with the object being taken into consideration during the adaptation, for the locating measurements in each case the weighting being dependent on the determined association probability for the association of the particular locating measurement with the object; and transferring the estimated instantaneous state parameters of the object to a state estimator for updating the estimated state of the object. A sensor system is also described.

Patent Agency Ranking