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    N-POINT COMPLEX FOURIER TRANSFORM STRUCTURE HAVING ONLY 2N REAL MULTIPLIES, AND OTHER MATRIX MULTIPLY OPERATIONS
    1.
    发明申请
    N-POINT COMPLEX FOURIER TRANSFORM STRUCTURE HAVING ONLY 2N REAL MULTIPLIES, AND OTHER MATRIX MULTIPLY OPERATIONS 有权

    公开(公告)号：US20220398295A1

    公开(公告)日：2022-12-15

    申请号：US17582359

    申请日：2022-01-24

    申请人： UHNDER, INC.

    发明人： Paul W. Dent ,  Frederick Rush ,  Monier Maher

    IPC分类号： G06F17/16 ,  G06F17/14 ,  G06F7/48

    摘要： An integrated circuit chip implementing multiplication of an M×N element matrix with an N-element vector to obtain an M-element product by combining the vector with rows of bits of the same significance selected from the matrix one bit-row at a time to form partial products, exploiting the fact that the same potential combinations are needed for all bit-rows and all matrix rows to precompute all of the combinations once and for all, and combining selected partial products for different bit place-significance with a shift-and-add operation only once for each of the M product elements, thereby effectively using only M multiply-equivalent structures. An N-point Complex Fourier Transform can therefore be claimed which only needs 2N real multiplies and the product of an N×N matrix with another N×N matrix requires only N2 multiplies.

    Radar data buffering
    2.
    发明授权
    Radar data buffering 有权

    公开(公告)号：US11340331B2

    公开(公告)日：2022-05-24

    申请号：US15978457

    申请日：2018-05-14

    申请人： UHNDER, INC.

    发明人： Monier Maher ,  Curtis Davis ,  Frederick Rush ,  Aria Eshraghi

    IPC分类号： G01S7/35 ,  G01S13/64 ,  G01S7/285 ,  G01S13/931 ,  G01S13/06 ,  G01S7/03 ,  G01S13/87 ,  G01S13/42 ,  G01S13/58 ,  G11C11/409 ,  G01S7/40 ,  G01S13/32 ,  G01S13/34 ,  G06F7/72

    摘要： A radar system includes transmitters and receivers configured for installation and use in a vehicle. The transmitters transmit radio signals. The receivers receive radio signals that include the transmitted radio signals reflected from objects in an environment. Each receiver has a controller, a buffer, and a post-buffer processor. The receiver processes the received radio signals and stored data samples in the buffer. The buffer operates in a plurality of modes defined by the controller. Two or more modes of operation of the plurality of modes are performed with a same set of data samples stored in the buffer. The post-buffer processor receives data samples from the buffer and performs at least one of correlation processing to determine object ranges, Doppler processing to determine object velocity, and, in combination with other receivers of the plurality of receivers, further processing to determine angular locations of the objects.

    METHOD AND APPARATUS FOR MITIGATION OF LOW FREQUENCY NOISE IN RADAR SYSTEMS
    5.
    发明申请
    METHOD AND APPARATUS FOR MITIGATION OF LOW FREQUENCY NOISE IN RADAR SYSTEMS 审中-公开

    公开(公告)号：US20200292665A1

    公开(公告)日：2020-09-17

    申请号：US16815320

    申请日：2020-03-11

    申请人： UHNDER, INC.

    发明人： Richard Behrens ,  Frederick Rush ,  Monier Maher ,  Murtaza Ali

    IPC分类号： G01S7/35 ,  G01S13/32 ,  G01S13/36

    摘要： A radar sensing system includes a transmitter and a receiver. The transmitter is configured to transmit a radio signal. The receiver is configured to receive radio signals that include the transmitted radio signal reflected from objects in the environment. The transmitter and receiver are configured to distribute the signal power over frequency so that it is separated from noise and impairments at DC and low frequencies as may be caused by some radar system components which introduce DC offsets and/or low frequency (e.g. flicker) noise.