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公开(公告)号：US20180364360A1
公开(公告)日：2018-12-20
申请号：US15490857
申请日：2017-04-18
Applicant: RAYTHEON COMPANY
Inventor： Louis Zellinger , Vitaliy M. Kaganovich , Eran Marcus
Abstract: A system and method for forming a range estimate for a target with a laser detection and ranging system. The system includes a laser transmitter and an array detector. The method includes: transmitting a plurality of laser pulses; for each transmitted laser pulse: detecting, with the array detector, a plurality of ladar return photons from the laser pulse, each detection producing an electrical pulse; identifying, for each of the electrical pulses, a time bin of a plurality of time bins corresponding to the laser pulse, within which the electrical pulse was produced; forming a one dimensional range histogram array having, for each of a subset of the plurality of bins, an element with a value equal to the number of electrical pulses produced in the array detector during a time interval corresponding to the bin; and forming an estimated range rate for the target.
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公开(公告)号：US20160350346A1
公开(公告)日：2016-12-01
申请号：US14671614
申请日：2015-03-27
Applicant: RAYTHEON COMPANY
Inventor： Eran Marcus , David U. Fluckiger , Brian F. Boland
CPC classification number: G06F17/30336 , G01S7/486 , G01S17/10 , G06F17/142 , G06F17/15 , G06F17/3053
Abstract: A method for computing a cross-correlation between a first sequence and a second sequence includes: generating a first index vector based on the first sequence, the first index vector including a plurality of first elements, the first index vector excluding indices of zero valued elements of the first sequence; generating a second index vector based on the second sequence, the second index vector including a plurality of second elements, the second index vector excluding indices of zero valued elements of the second sequence; computing, on a processor, a plurality of pairwise differences between each of first elements of the first index vector and each of the second elements of the second index vector; and binning, on the processor, the plurality of pairwise differences to generate the cross-correlation of the first sequence and the second sequence.
Abstract translation: 一种用于计算第一序列和第二序列之间的互相关的方法包括：基于所述第一序列生成第一索引向量，所述第一索引向量包括多个第一元素，所述第一索引向量不包括零值元素的索引 的第一个序列; 基于所述第二序列生成第二索引向量，所述第二索引向量包括多个第二元素，所述第二索引向量不包括所述第二序列的零值元素的索引; 在处理器上计算所述第一索引向量的每个第一元素和所述第二索引向量中的每个第二元素之间的多个成对差异; 以及在所述处理器上合并所述多个成对差异以产生所述第一序列和所述第二序列的互相关。
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公开(公告)号：US20230184950A1
公开(公告)日：2023-06-15
申请号：US17643511
申请日：2021-12-09
Applicant: Raytheon Company
Inventor： Adam Hodge Greenberg , Eran Marcus
CPC classification number: G01S17/89 , G01S7/4814 , G01S17/58 , G06T15/08
Abstract: A plurality of scattered laser pulses is received, each scattered laser pulse associated with at least one plurality of respective dwells. A set of 3D velocity information is received, which is derived from photo events detected in information associated with the received plurality of scattered laser pulses. Each dwell in the plurality of dwells is associated with one or more photo events. The 3D velocity information comprises information estimating each respective photo event’s respective position in 6D space during the respective dwell associated with the photo event. For each dwell, its respective photo events are projected into a common reference frame, determined based on the 3D velocity information, to generate a set of motion-compensated point clouds. Each respective motion-compensated point cloud, for each dwell, is registered to the other motion-compensated point clouds in the set, to generate a set of registered point clouds, which are merged into a volumetric image.
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公开(公告)号：US11561291B2
公开(公告)日：2023-01-24
申请号：US16863262
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Eran Marcus , Joseph Marron , Adam Hodge Greenberg
IPC: G01S7/48 , G01S7/484 , G01S17/58 , G01S7/4861
Abstract: A laser detection and ranging system and method for operating thereof. 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; and estimating a range or a range rate of a target based on the pulse transmission times and the return pulse times. Each of the pulse transmission times may be offset from a corresponding nominal pulse transmission time by a respective pulse position modulation offset, the nominal pulse transmission times being uniformly spaced with a period corresponding to a pulse repetition frequency, the pulse repetition frequency being greater than 500 kHz.
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公开(公告)号：US11525920B2
公开(公告)日：2022-12-13
申请号：US16863064
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg , Eran Marcus
Abstract: A target acquisition system includes a transmitter configured to emit a plurality of pulses at a plurality of transmit times toward a target, a receiver configured to detect a plurality of photon arrival events at a plurality of receive times, and a processor configured to determine a range of the target and a range-rate of the target by identifying a subset of the receive times and a subset of the transmit times, generating scaled transmit times based on the subset of the transmit times and a plurality of trial target velocities relative to the receiver, cross-correlating the scaled transmit times and the subset of the received times to generate a plurality of cross-correlation power values, and calculating the range and the range-rate of the target based on the plurality of cross-correlation power values.
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Patent Agency Ranking
公开(公告)号：US20220373649A1
公开(公告)日：2022-11-24
申请号：US17322624
申请日：2021-05-17
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg , Joseph Marron , Sueanne Shimon , Eran Marcus
Abstract: A method for operating a multifunction laser radar system including receiving a target state corresponding to parameters of a target, selecting a mode of operation from a plurality of modes of operation for the laser radar system based on the target state, receiving returns reflected by the target via the laser radar system operating in the selected mode of operation, processing the returns to calculate at least one target measurement, and determining a filtered target state based on the at least one target measurement.
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公开(公告)号：US20210341604A1
公开(公告)日：2021-11-04
申请号：US16863055
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg , Eran Marcus
Abstract: A transmitter for communication-less bistatic ranging includes a photon emitter configured to emit a plurality of photons at particular times in a pointing direction, and a processor configured to identify a particular sub-code of a plurality of sub-codes based on a dynamic state of the transmitter, each one of the plurality of sub-codes including a portion of a long optimal ranging code, generate a plurality of encoded pulse timings by dithering pulse timings from a nominal repetition frequency based on the particular sub-code, and control the photon emitter to emit the plurality of photons at the plurality of encoded pulse timings.
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公开(公告)号：US20210341576A1
公开(公告)日：2021-11-04
申请号：US16863262
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Eran Marcus , Joseph Marron , Adam Hodge Greenberg
IPC: G01S7/484 , G01S7/4861 , G01S17/58
Abstract: A laser detection and ranging system and method for operating thereof. 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; and estimating a range or a range rate of a target based on the pulse transmission times and the return pulse times. Each of the pulse transmission times may be offset from a corresponding nominal pulse transmission time by a respective pulse position modulation offset, the nominal pulse transmission times being uniformly spaced with a period corresponding to a pulse repetition frequency, the pulse repetition frequency being greater than 500 kHz.
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公开(公告)号：US20180299556A1
公开(公告)日：2018-10-18
申请号：US15490858
申请日：2017-04-18
Applicant: RAYTHEON COMPANY
Inventor： Eran Marcus , Vitaliy M. Kaganovich
CPC classification number: G01S17/89 , G01S7/4808 , G01S7/4863 , G01S7/4865 , G01S7/4876 , G01S17/023 , G01S17/107 , G01S17/42 , G01S17/58 , G01S17/933 , G06T7/262 , G06T2207/10028
Abstract: A system and method for forming an image of a target with a laser detection and ranging system. The system includes a laser transmitter and an array detector. The method includes transmitting a sequence of laser pulses; forming a plurality of point clouds, each point cloud corresponding to a respective transmitted laser pulse, each point in the point cloud corresponding to a point on a surface of the target; grouping the plurality of point clouds into a plurality of point cloud groups according to a contiguous subset of the sequence of laser pulses; forming a plurality of average point clouds, each of the average point clouds being the average of a respective group of the plurality of point cloud groups; and forming a first estimate of a six-dimensional velocity of the target, including three translational velocity components and three angular velocity components, from the plurality of average point clouds.
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公开(公告)号：US12153139B2
公开(公告)日：2024-11-26
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.
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