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    COVERT SENSING AND COMMUNICATIONS USING SPREAD SPECTRUM WAVEFORM CODING
    1.
    发明公开
    COVERT SENSING AND COMMUNICATIONS USING SPREAD SPECTRUM WAVEFORM CODING 审中-公开

    公开(公告)号：US20240361458A1

    公开(公告)日：2024-10-31

    申请号：US18646096

    申请日：2024-04-25

    申请人： Raytheon Company

    发明人： Mark J. Meisner

    IPC分类号： G01S17/36 ,  G01S7/00 ,  G01S7/4911 ,  G01S7/4912

    CPC分类号： G01S17/36 ,  G01S7/006 ,  G01S7/4911 ,  G01S7/4917

    摘要： In a system for covert sensing and communications a broadband light source is encoded using spread spectrum waveform coding to spread a narrow-band signal over frequency. The modulated broadband light is suitably hidden in additional noise and then split into two portions, a first portion of which illuminates a target, and a second portion of which is delayed and provided as a local oscillator. Light reflected from the target is combined with the local oscillator, detected using heterodyne, homodyne or quasi-homodyne techniques, demodulated and decoded to estimate the phase of the reflected light relative to the transmitted light to provide fine range estimates for the target. Waveform coding allows for time-correlation of the transmitted and received coded waveforms to provide improved resolution for adjusting the delay of the local oscillator to improve the detection schemes. The waveform coding also provides a covert communications channel.

    LIDAR transmit/receive system
    4.
    发明授权
    LIDAR transmit/receive system 有权

    公开(公告)号：US12066548B2

    公开(公告)日：2024-08-20

    申请号：US17674537

    申请日：2022-02-17

    申请人： Aurora Operations, Inc.

    发明人： Zeb Barber ,  Stephen Crouch ,  Emil Kadlec

    IPC分类号： G01S17/931 ,  G01S7/481 ,  G01S7/4912 ,  G01S17/34 ,  G05D1/00

    CPC分类号： G01S17/931 ,  G01S7/4814 ,  G01S7/4912 ,  G01S17/34 ,  G05D1/0088 ,  G05D1/0223

    摘要： A light detection and ranging (LIDAR) system for a vehicle, includes a laser source configured to generate light signals, a transceiver, and a fiber array coupled to the transceiver and including a plurality of output channels. The transceiver is configured to receive one or more light signals from the laser source through a first group of output channels of the fiber array, receive one or more local oscillator (LO) signals through a second group of output channels of the fiber array, transmit the one or more light signals into an environment of the vehicle, receive a first returned light reflected from one or more objects in the environment, and output the first returned light and a first LO signal of the one or more LO signals.

    Light detection and ranging (LIDAR) system
    6.
    发明授权
    Light detection and ranging (LIDAR) system 有权

    公开(公告)号：US12050272B2

    公开(公告)日：2024-07-30

    申请号：US16921320

    申请日：2020-07-06

    申请人： UATC, LLC

    发明人： Florin Cornel Ignatescu ,  Daniel Fredric Gruver ,  Gaetan Pennecot

    IPC分类号： G01S17/931 ,  G01S7/4911 ,  G01S7/4912 ,  G01S7/4913 ,  G01S17/02

    CPC分类号： G01S17/931 ,  G01S7/4911 ,  G01S7/4913 ,  G01S17/02 ,  G01S7/4918

    摘要： A LIDAR system is provided. The LIDAR system includes an emitter. The emitter includes a light source and one or more lenses positioned along a transmit path. The light source is configured to emit a primary laser beam through the one or more lenses in the transmit path to provide a transmit beam. The LIDAR system includes a receiver spaced apart from the emitter. The receiver includes one or more lenses positioned along a receive path such that the one or more lenses receive a reflected laser beam. The LIDAR system includes an optical element positioned along the transmit path. The optical element is configured to direct a portion of the primary laser beam in a direction towards the receive path as a secondary laser beam.

    Sensor device
    8.
    发明授权
    Sensor device 有权

    公开(公告)号：US12044807B2

    公开(公告)日：2024-07-23

    申请号：US16962326

    申请日：2019-01-15

    申请人： Robert Bosch GmbH

    发明人： Thomas Brosche ,  Oliver Kern

    IPC分类号： G01S7/4915 ,  G01S7/481 ,  G01S7/4912 ,  G01S17/00

    CPC分类号： G01S7/4915 ,  G01S7/4817 ,  G01S7/4917 ,  G01S17/003

    摘要： A sensor device for determining a distance and/or speed of an object, including a transmitting unit for emitting light of at least one frequency onto the object, the transmitting unit being designed for emitting light in at least one angular range, the light in the angular range being time-dependent varied essentially simultaneously with frequencies in different frequency ranges, a receiving unit for receiving light reflected by the object, the receiving unit being designed for scanning the received light in the particular frequency range at least two points in time, and an evaluation unit, which is designed for determining the distance and/or the speed of the object on the basis of the emitted light and the points in time at which the received light was scanned.

    TIME OF FLIGHT DETECTION SYSTEMS WITH EFFICIENT PHASE MEASUREMENT
    9.
    发明公开
    TIME OF FLIGHT DETECTION SYSTEMS WITH EFFICIENT PHASE MEASUREMENT 审中-公开

    公开(公告)号：US20240230902A9

    公开(公告)日：2024-07-11

    申请号：US18546124

    申请日：2022-09-16

    申请人： Banner Engineering Corp.

    发明人： Ashley Wise

    IPC分类号： G01S17/36 ,  G01S7/4912 ,  G01S7/4915

    CPC分类号： G01S17/36 ,  G01S7/4915 ,  G01S7/4918

    摘要： Apparatus and associated methods relate to a select frequency phase measurement (SFPM) time of flight (TOF) system including an emitter and a receiver. The emitter may generate a modulated emitted signal by at least one frequency. The emitted signal may, for example, be a pulsed light signal. The receiver may generate a signal in response to receiving a reflection of the emitted signal off a target object. An ADC element may digitize a signal generated by the receiving element, and a reference signal generated by a monitored signal of the modulated emitted signal. A processing element may generate a phase signal using single frequency analysis of the digitized signals. A distance measurement signal may be generated as a function of the phase signal. Various embodiments may, for example, advantageously enable sub-millisecond sensor response times using commodity processing elements.