公开(公告)号：US20240402340A1

公开(公告)日：2024-12-05

申请号：US17138365

申请日：2020-12-30

Applicant: Raytheon Company

Inventor： Adam Hodge Greenberg

IPC: G01S17/89 ,  G01S17/42 ,  G01S17/58 ,  G01S17/894

Abstract: An apparatus, and method of operating the same locates and tracks a target in four dimensions across a FPA using GMAPD data. The apparatus includes a receiver and a processor arranged to generate a video filter array, the video filter array including a set of estimated velocity pixel coordinate components arranged in a linear data set. The processor generates detected photo events based on received scattered laser pulses, filters the detected photo events by linearly indexing each of the plurality of detected photo events based on, for each detected photo event, a vertical position in the focal plane array, a horizontal position in the focal plane array, a frame number, and the dimensions of the focal-plane array. The processor maps each detected photo event to the set of estimated velocity pixel coordinate components, and generates a motion-compensated image associated with the mapped detected photo events in a filtered two-dimensional array.

公开(公告)号：US11822015B2

公开(公告)日：2023-11-21

申请号：US16863792

申请日：2020-04-30

Applicant: RAYTHEON COMPANY

Inventor： Adam Hodge Greenberg ,  Eran Marcus

IPC: G01S7/484

CPC classification number: G01S7/484

Abstract: System and method for generating Pulse Position Modulated (PPM) lidar waveforms generating Pulse Position Modulated (PPM) waveforms in a lidar includes: a) creating a modulation pool, based on a maximum nominal pulse repetition frequency (PRF); b) eliminating bad modulation levels from the modulation pool to generate a good modulation pool; c) selecting a modulation level from the good modulation pool to generate a PPM code element; d) repeating steps b and c N times to generate an N-element PPM code, wherein the PPM code is PRF independent; e) selecting a PRF less than the maximum nominal PRF; f) generating a PPM waveform by applying the N-element PPM code to the selected PRF; and g) transmitting the PPM waveform by the lidar toward a target to determine a range to the target.

公开(公告)号：US11589248B1

公开(公告)日：2023-02-21

申请号：US17178369

申请日：2021-02-18

Applicant: Raytheon Company

Inventor： Adam Hodge Greenberg ,  Richard A. Loveless

IPC: H04W24/08

Abstract: A method for identifying a current state of an electronic system is provided. The method includes identifying a pool of candidate states of the electronic system, selecting a probing parameter in accordance with a model, and probing the electronic system based on the selected probing parameter. When the probing yields a positive result, all candidate states that are not intersected by the probing parameter are removed from the pool. When the probing parameter yields M negative results, all candidate states that are intersected by the probing parameter are removed from the pool, where M≥1. A last remaining candidate state in the pool is identified as the current state of the electronic system. The model is based on at least one of a probability that the probing would yield a false-negative result or a probability that a result of the probing would be interpreted and/or processed incorrectly.

公开(公告)号：US11480678B2

公开(公告)日：2022-10-25

申请号：US16863484

申请日：2020-04-30

Applicant: RAYTHEON COMPANY

Inventor： Adam Hodge Greenberg ,  Eran Marcus

IPC: G01S17/10 ,  G01S7/484 ,  G01S7/4861 ,  G01S7/487

Abstract: A method for operating a laser detection and ranging system. In some embodiments, the method includes transmitting a plurality of laser pulses, each at a respective one of a plurality of pulse transmission times; detecting a plurality of return pulses, each at a respective one of a plurality of return pulse times; forming a first time difference, the first time difference being the difference between a first return pulse time of the plurality of return pulse times and a first pulse transmission time of the plurality of pulse transmission times; and incrementing a first element of a first array, the first element of the first array having an index based on the first time difference.

公开(公告)号：US20220206152A1

公开(公告)日：2022-06-30

申请号：US17138386

申请日：2020-12-30

Applicant: Raytheon Company

Inventor： Adam Hodge Greenberg ,  Eran Marcus

IPC: G01S17/89 ,  G01S7/481 ,  G01S7/4861

Abstract: An apparatus, and method of operating the same processes of LADAR data including iterating back and forth between target detection in a 2-D array having range and range rate dimension, and a 4-D array having azimuth, azimuthal velocity, elevation, & elevation velocity dimensions. The apparatus includes a receiver and a processor arranged to generate photo events including target signal photo events and background photo events, transform the photo events into the 2-D target tracking array including range and range-rate parameters and tag photo events determined to be 2-D target signal photo events. The processor transforms tagged photo events into the 4-D target and tags photo events determined to be 4-D target signal photo events.

公开(公告)号：US20210341577A1

公开(公告)日：2021-11-04

申请号：US16863744

申请日：2020-04-30

Applicant: RAYTHEON COMPANY

Inventor： Adam Hodge Greenberg

IPC: G01S7/484

Abstract: A lidar for generating a cyclically optimal Pulse Position Modulated (PPM) waveform includes: a memory for storing a list of prime numbers; a processor for obtaining a list of prime numbers up to a predetermined maximum code length; selecting a largest prime number p* that is less than or equal to a ratio of a timing system bandwidth to the predetermined pulse repetition frequency (PRF), from the list of the prime numbers; constructing a list of pulse indices, m=0:p*−1 for the cyclically optimal PPM waveform; calculating a list of pulse modulations, dJs=mod(m2, p*)−(p*−1)/2, wherein dJs are modulation values; calculating a list of nominal pulse timings T, as T=m×ceil(TPRI/Δj), where Δj is a predetermined modulation resolution, and TPRI is the reciprocal of the PRF; and generating the cyclically optimal PPM waveform from the pulse timings t0.