ELECTRONICALLY-STEERABLE OPTICAL SENSOR AND METHOD AND SYSTEM FOR USING THE SAME

    公开(公告)号:US20210041712A1

    公开(公告)日:2021-02-11

    申请号:US16531982

    申请日:2019-08-05

    Abstract: A system and method for obtaining an overall image that is constructed from multiple sub-images. The method includes: capturing a first sub-image having a first sub-image field of view using an image sensor of an electronically-steerable optical sensor; after capturing the first sub-image, steering light received at the electronically-steerable optical sensor using an electronically-controllable light-steering mechanism of the electronically-steerable optical sensor so as to obtain a second sub-image field of view; capturing a second sub-image having the second sub-image field of view using the image sensor of the electronically-steerable optical sensor; and combining the first sub-image and the second sub-image so as to obtain the overall image.

    STEERABLE SCANNING AND PERCEPTION SYSTEM WITH ACTIVE ILLUMINATION

    公开(公告)号:US20210016704A1

    公开(公告)日:2021-01-21

    申请号:US16515662

    申请日:2019-07-18

    Abstract: A scanning and perception system for a vehicle camera having an instantaneous field of view (iFOV) and configured to capture an image of an object at a saturation level in the camera's iFOV. The system also includes a light source configured to illuminate the camera's iFOV. The system additionally includes a radar configured to determine the object's velocity and the object's distance from the vehicle, and a mechanism configured to steer the radar and/or the camera. The system also includes an electronic controller programmed to regulate the mechanism and adjust illumination intensity of the light source in response to the saturation level in the image or the determined distance to the object. The controller is also programmed to merge data indicative of the captured image and data indicative of the determined position of the object and classify the object and identify the object's position in response to the merged data.

    RADAR RANGE AMBIGUITY RESOLUTION USING MULTI-RATE SAMPLING

    公开(公告)号:US20210011151A1

    公开(公告)日:2021-01-14

    申请号:US16507603

    申请日:2019-07-10

    Abstract: A radar circuit for use with a vehicle or other host system includes a radio frequency (RF) signal generator, an RF antenna connected to the signal generator configured to transmit an RF waveform toward a radar target and receive a radar return signature reflected therefrom, and an analog-to-digital converter (ADC) in communication with the antenna and having a different sampling frequencies. The ADC may have multiple channels outputting sampled radar return signature data at the different sampling frequencies. An ECU is in communication with the ADC to receive the sampled radar return signature data from the ADC, generate a set of range hypotheses describing a possible range from the host system to the radar target, select a correct range hypothesis, and execute a control action using the correct range hypothesis. The correct range hypothesis corresponds to a true range to the radar target.

    ADAPTIVE RANGE-SELECTIVE GAIN CONTROL IN RADAR SYSTEM

    公开(公告)号:US20200319295A1

    公开(公告)日:2020-10-08

    申请号:US16373117

    申请日:2019-04-02

    Abstract: A method and system include transmitting transmit signals from a radar system. The transmit signals are linear frequency modulated continuous wave signals. The method includes receiving reflected signals at the radar system based on reflection of at least at subset of the transmit signals by one or more objects. A range from the radar system associated with each of the reflected signals corresponds with a frequency of the reflected signal. The reflected signals are processed to identify and locate the one or more objects. Processing includes applying an adaptive range-selective gain control (ARSGC) to control a gain corresponding with each of the reflected signals based on the range associated with the reflected signal.

    Radar calibration with known global positioning of static objects

    公开(公告)号:US10591584B2

    公开(公告)日:2020-03-17

    申请号:US15333572

    申请日:2016-10-25

    Abstract: A system and method perform calibration of a radar system on a mobile platform. A position of the platform is obtained along with a relative position of one or more stationary objects from the platform using the position of the platform and a mapping algorithm as ground truth and one or more radar parameters regarding the one or more stationary objects using the radar system, the one or more radar parameters including an angle estimate. The method includes determining a correction matrix based on the one or more parameters and the ground truth, and obtaining corrected received signals from subsequent received signals of the radar system based on the correction matrix.

    Adaptive process noise description for improved kalman filter target tracking

    公开(公告)号:US10564276B2

    公开(公告)日:2020-02-18

    申请号:US15447376

    申请日:2017-03-02

    Abstract: A system and method to perform target tracking with a radar system that uses a Kalman filter include predicting a predicted target position of a target detected by the radar system in a frame. The frame is a period of time to transmit from every transmit element of the radar system in turn and receive the reflections from a range of the target. The method also includes determining an actual target position of the target detected by the radar system based on reflections received by the radar system for the frame, and computing a process noise covariance matrix Q for a next frame, immediately following the frame, based on the predicted target position and the actual target position. Predicting a position of the target in the next frame is based on the process noise covariance matrix Q.

    METHOD OF CALIBRATING A RADAR SYSTEM
    89.
    发明申请

    公开(公告)号:US20200033445A1

    公开(公告)日:2020-01-30

    申请号:US16049373

    申请日:2018-07-30

    Abstract: A radar system and method for calibrating a radar system, the method including the steps of: measuring a set of azimuth angles of the radar system to obtain a plurality of measured azimuth array responses, wherein the radar system is physically rotated about a first axis of the radar system between each azimuth angle measurement; measuring a set of elevation angles of the radar system to obtain a plurality of measured elevation array responses, wherein the radar system is physically rotated about a second axis of the radar system between each elevation angle measurement; obtaining an azimuth calibration matrix based on the plurality of measured azimuth array responses and an elevation calibration matrix based on the plurality of measured elevation array responses; and configuring the radar system to apply the azimuth calibration matrix and the elevation calibration matrix to one or more antenna array responses.

    Tool for automatic multiple radar calibration

    公开(公告)号:US10473759B2

    公开(公告)日:2019-11-12

    申请号:US15471413

    申请日:2017-03-28

    Abstract: A method and apparatus for determining a distance between a first radar system disposed on a vehicle and a second radar system disposed on the vehicle. A target reflector is moved along a track to a location along a perpendicular bisector of a baseline connecting the first radar system and the second radar system. A direct range measurement is obtained for at least one of the first radar system and the second radar system, and a bistatic range measurement is obtained between the first radar system and the second radar system. A processor determines the distance between the first radar system and the second radar system using the direct range measurement, the bistatic range measurement and a radial length of the target reflector.

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