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公开(公告)号：US20220373642A1
公开(公告)日：2022-11-24
申请号：US17322629
申请日：2021-05-17
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg
Abstract: A method for transforming data from the time domain to the frequency domain. The method including receiving time domain input data, the time domain input data being sparse and binary-valued, obtaining at least one time vector corresponding to times of non-zero entries in the time domain input data, obtaining a frequency vector corresponding to frequencies of interest, determining at least one matrix corresponding to the at least one time vector and the frequency vector, performing a Sparse Partial Fourier Transform (SPFT) computation using the at least one matrix, and providing frequency domain output data corresponding to the time domain input data.
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公开(公告)号：US20220365215A1
公开(公告)日：2022-11-17
申请号：US16863064
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg , Eran Marcus
IPC: G01S17/58 , G01S7/4865
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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公开(公告)号：US20210341606A1
公开(公告)日：2021-11-04
申请号：US16863484
申请日：2020-04-30
Applicant: RAYTHEON COMPANY
Inventor： Adam Hodge Greenberg , Eran Marcus
IPC: G01S17/10 , G01S7/4861 , G01S7/487 , G01S7/484
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.
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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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Patent Agency Ranking
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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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：US12216209B2
公开(公告)日：2025-02-04
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.
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