公开(公告)号：US20200265592A1

公开(公告)日：2020-08-20

申请号：US16278633

申请日：2019-02-18

Applicant: Raytheon Company

Inventor： Arthur M. Newman

IPC: G06T7/246 ,  G06T3/00

Abstract: A three-frame difference target-tracking system includes at least one processor configured to generate multiple aligned image frames of a scene. The aligned image frames include first, second, and third image frames. The at least one processor is also configured to identify differences between the first image frame and the second image frame, between the second image frame and the third image frame, and between the first image frame and the third image frame. The at least one processor is further configured to identify a direction of movement of a target in the scene based on the identified differences.

公开(公告)号：US11415697B2

公开(公告)日：2022-08-16

申请号：US16419768

申请日：2019-05-22

Applicant: Raytheon Company

Inventor： Arthur M. Newman ,  Eran Marcus ,  Brian Boland

IPC: G01S17/89 ,  G01J1/44 ,  G01S7/4863 ,  G01S17/08

Abstract: A measured photo-event array is converted from two spatial coordinates and one temporal coordinate into three spatial coordinates for real-time imaging. Laser light pulses illuminate at least one object, and a Geiger-mode avalanche photodiode array receives photons from laser light reflected off the object. For each pulse of the laser light, the GMAPD outputs a first array of photo-events representative of reflected photons. A three-dimensional (3D) Gaussian distribution kernel arranged as a list of array locations to be processed and weight list(s) are provided. The weight list(s) specify an amount array values are scaled based on the Gaussian distribution or photon arrival time. A graphics processing unit arranges the first array of measured photo-events as a list, convolves the Gaussian displacement list with the list of measured photo-events to produce a convolution output, and applies weights from the weight list(s) to the values to produce a density point cloud.

公开(公告)号：US10557927B2

公开(公告)日：2020-02-11

申请号：US15490855

申请日：2017-04-18

Applicant: RAYTHEON COMPANY

Inventor： Joseph Marron ,  Louis Zellinger ,  Arthur M. Newman ,  Vitaliy M. Kaganovich

IPC: G01S7/48 ,  G01S17/58 ,  G01S17/10 ,  G01S17/02

Abstract: A system and method for forming a range rate estimate for a target with a laser detection and ranging system including a laser transmitter and an array detector. The method includes: transmitting a plurality of laser pulses at a pulse repetition frequency; forming a one dimensional time series array corresponding to a time record of ladar return photons detected with the array detector; fitting the time series array with a superposition of a sine and a cosine of an initial value of a tentative frequency; iteratively fitting the time series array with a superposition of a sine and a cosine of the tentative frequency, and adjusting the tentative frequency until a completion criterion is satisfied at a final value of the tentative frequency.

公开(公告)号：US20180299536A1

公开(公告)日：2018-10-18

申请号：US15490855

申请日：2017-04-18

Applicant: RAYTHEON COMPANY

Inventor： Joseph Marron ,  Louis Zellinger ,  Arthur M. Newman ,  Vitaliy M. Kaganovich

IPC: G01S7/486 ,  G01S17/58 ,  G01S17/10 ,  G01S17/02

CPC classification number: G01S7/4865 ,  G01S7/4808 ,  G01S7/4863 ,  G01S17/023 ,  G01S17/102 ,  G01S17/58 ,  G01S17/89

Abstract: A system and method for forming a range rate estimate for a target with a laser detection and ranging system including a laser transmitter and an array detector. The method includes: transmitting a plurality of laser pulses at a pulse repetition frequency; forming a one dimensional time series array corresponding to a time record of ladar return photons detected with the array detector; fitting the time series array with a superposition of a sine and a cosine of an initial value of a tentative frequency; iteratively fitting the time series array with a superposition of a sine and a cosine of the tentative frequency, and adjusting the tentative frequency until a completion criterion is satisfied at a final value of the tentative frequency.

公开(公告)号：US10977808B2

公开(公告)日：2021-04-13

申请号：US16278633

申请日：2019-02-18

Applicant: Raytheon Company

Inventor： Arthur M. Newman

IPC: G06T7/246 ,  G06T3/00

Abstract: A three-frame difference target-tracking system includes at least one processor configured to generate multiple aligned image frames of a scene. The aligned image frames include first, second, and third image frames. The at least one processor is also configured to identify differences between the first image frame and the second image frame, between the second image frame and the third image frame, and between the first image frame and the third image frame. The at least one processor is further configured to identify a direction of movement of a target in the scene based on the identified differences.

公开(公告)号：US20200371240A1

公开(公告)日：2020-11-26

申请号：US16419768

申请日：2019-05-22

Applicant: Raytheon Company

Inventor： Arthur M. Newman ,  Eran Marcus ,  Brian Boland

IPC: G01S17/89 ,  G01S7/486 ,  G01S17/08 ,  G01J1/44

Abstract: A measured photo-event array is converted from two spatial coordinates and one temporal coordinate into three spatial coordinates for real-time imaging. Laser light pulses illuminate at least one object, and a Geiger-mode avalanche photodiode array receives photons from laser light reflected off the object. For each pulse of the laser light, the GMAPD outputs a first array of photo-events representative of reflected photons. A three-dimensional (3D) Gaussian distribution kernel arranged as a list of array locations to be processed and weight list(s) are provided. The weight list(s) specify an amount array values are scaled based on the Gaussian distribution or photon arrival time. A graphics processing unit arranges the first array of measured photo-events as a list, convolves the Gaussian displacement list with the list of measured photo-events to produce a convolution output, and applies weights from the weight list(s) to the values to produce a density point cloud.

公开(公告)号：US20160148390A1

公开(公告)日：2016-05-26

申请号：US14551860

申请日：2014-11-24

Applicant: RAYTHEON COMPANY

Inventor： Pablo Arambel ,  Arthur M. Newman ,  Mario Martinez

IPC: G06T7/20 ,  G06K9/00 ,  G06K9/62

CPC classification number: G06K9/0063 ,  G06K9/4638 ,  G06K9/4652 ,  G06T7/248 ,  G06T2207/10016 ,  G06T2207/10032 ,  G06T2207/20021 ,  G06T2207/20076 ,  G06T2207/30232 ,  G06T2207/30241

Abstract: Airborne tracking systems use sensors to track objects of interest. In order to track the objects of interests, the sensors need to be steered such that the object is kept, ideally, in the center of the sensors field of view. Automatic steering of optical sensors requires the generation of a track on an object of interest. When tracking boats on the water, current approaches to image processing may generate multiple detections on the object of interest. Embodiments of the present disclosure solve the track multiplicity problem by grouping tracks associated with the object of interest into a cluster and by estimating a most likely location of the object within the cluster of tracks. Based on the estimated location, embodiments of the present disclosure outputs a single track for the object. The single track is used by an automatic steering system to maintain a sensor aimed at the object of interest.

Abstract translation: 机载跟踪系统使用传感器跟踪感兴趣的物体。 为了跟踪感兴趣的对象，传感器需要被引导，使得物体理想地保持在传感器视场的中心。 光学传感器的自动转向需要在感兴趣的物体上产生轨迹。 当跟踪水上的小船时，目前的图像处理方法可能会对感兴趣的对象产生多个检测。 本公开的实施例通过将与感兴趣对象相关联的轨道分组为群集并且通过估计轨道簇内的对象的最可能位置来解决轨道多重性问题。 基于估计的位置，本公开的实施例为对象输出单个轨道。 单个轨道由自动转向系统使用以保持针对感兴趣对象的传感器。