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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.

    Sychronization device, associated time of flight sensor and method
    2.
    发明授权
    Sychronization device, associated time of flight sensor and method 有权

    公开(公告)号：US12123982B2

    公开(公告)日：2024-10-22

    申请号：US17177608

    申请日：2021-02-17

    申请人： STMicroelectronics (Grenoble 2) SAS

    发明人： Cedric Tubert

    IPC分类号： G01S7/48 ,  G01S7/4865 ,  G01S7/497 ,  G01S17/36

    CPC分类号： G01S7/497 ,  G01S7/4865 ,  G01S17/36

    摘要： An embodiment device for synchronizing the emission and the reception of a light signal for a time-of-flight sensor comprises a power-control circuit configured to generate and transmit a power signal based on a control signal for controlling the sensor, the power signal being configured to supply power to an array of pixels of the sensor, a production module for producing a synchronization signal, which module is configured to produce the synchronization signal based on the control signal, and a switch configured to supply power to a light source of a device for emitting the light signal, the production module being further configured to transmit the synchronization signal to the switch such that the time taken to produce and transmit the synchronization signal and the time taken to generate and transmit the power signal are identical.

    TIME OF FLIGHT DETECTION SYSTEMS WITH EFFICIENT PHASE MEASUREMENT
    3.
    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.

    DISTANCE MEASURING DEVICE, DISTANCE MEASURING SYSTEM, AND DISTANCE MEASURING METHOD
    6.
    发明公开
    DISTANCE MEASURING DEVICE, DISTANCE MEASURING SYSTEM, AND DISTANCE MEASURING METHOD 审中-公开

    公开(公告)号：US20240168159A1

    公开(公告)日：2024-05-23

    申请号：US18548973

    申请日：2022-02-22

    申请人： SONY GROUP CORPORATION

    发明人： YOSUKE KONNO

    IPC分类号： G01S17/36 ,  G01S7/48 ,  G01S7/486 ,  G01S17/86

    CPC分类号： G01S17/36 ,  G01S7/4808 ,  G01S7/486 ,  G01S17/86

    摘要： A distance measuring device is provided that includes a first acquisition unit (232) that acquires a plurality of luminance images from a light receiving unit that receives light having a predetermined irradiation pattern reflected by a target object while sequentially shifting the light by a predetermined phase with reference to the irradiation pattern, a second acquisition unit (234) that acquires sensing data from a motion sensor that detects a position and an attitude of the light receiving unit, a correction unit (240) that corrects the luminance image on the basis of the position and the attitude obtained from the sensing data, and a calculation unit (260) that calculates a distance to the target object on the basis of the plurality of corrected luminance images.

    CONTINUOUS WAVE TIME OF FLIGHT SYSTEM
    8.
    发明公开
    CONTINUOUS WAVE TIME OF FLIGHT SYSTEM 审中-公开

    公开(公告)号：US20240111055A1

    公开(公告)日：2024-04-04

    申请号：US17937311

    申请日：2022-09-30

    申请人： Analog Devices International Unlimited Company

    发明人： Javier CALPE-MARAVILLA ,  Filiberto Pla ,  Jonathan Hurwitz ,  Nicolas Le Dortz

    IPC分类号： G01S17/894 ,  G01S17/34 ,  G01S17/36

    CPC分类号： G01S17/894 ,  G01S17/34 ,  G01S17/36

    摘要： There is provided continuous wave time of flight, CW-ToF, camera system comprising: one or more lasers for outputting laser light; one or more imaging sensors, the one or more image sensors each comprising a plurality of imaging pixels for accumulating charge based on incident light comprising reflected laser light off a first surface of an object; and a distance determination system coupled to the one or more imaging sensors and configured to: acquire a first set of charge samples from the one or more imaging sensors in respect of the object by: a) driving the one or more lasers to output laser light modulated with a first modulation signal, wherein the first modulation signal has a first frequency; and b) after step a, reading out image sensor values indicative of charge accumulated by at least some of the plurality of imaging pixels of the one or more imaging sensors; acquire a second set of charge samples from the one or more imaging sensors in respect of the object by: c) driving the one or more lasers to output laser light modulated with the first modulation signal; and d) after step c, reading out image sensor values indicative of charge accumulated by at least some of the plurality of imaging pixels of the one or more imaging sensors; and determine a size of the object, wherein the size is a distance between the first surface and a second surface of the object, based on the first set of charge samples and the second set of charge samples and a predetermined distance between the one or more imaging sensors and the second surface of the object, wherein the first set of charge samples and the second set of charge samples are acquired at a first angle and at a second angle, respectively, relative to the first surface of the object