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公开(公告)号：US20240012127A1
公开(公告)日：2024-01-11
申请号：US17643639
申请日：2021-12-10
Applicant: Raytheon Company
Inventor： James D. Campbell , Charles T. Hansen
CPC classification number: G01S13/53 , G01S7/2883 , G01S13/003
Abstract: A circuit comprises a receive processing window formation subsystem, a matched filter subsystem, a keystone interpolation subsystem, a phase modulation subsystem, and an image forming subsystem. The receive processing window formation subsystem forms, for each radar return from a scene, a receive processing window containing the radar return as an unbroken radar return. The matched filter subsystem creates a motion model for a reference point target disposed at a predetermined location within the scene, based on a set of motion compensation parameters for range and range rate, to compensate for at least some effects of fast time Doppler on the reference point target. The keystone interpolation subsystem rescales slow time information from the matched filter subsystem. A phase modulation subsystem applies phase modulations to a keystone-interpolated 2-D output array of information associated with the scene, to ensure proper registration in a range-Doppler map output of the scene.
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公开(公告)号：US09391365B2
公开(公告)日：2016-07-12
申请号：US13889144
申请日：2013-05-07
Applicant: RAYTHEON COMPANY
Inventor： Charles T. Hansen
CPC classification number: H01Q3/00 , G01S3/32 , G01S3/46 , G01S7/295 , G01S13/02 , G01S13/0209 , G01S13/42 , G01S13/4454
Abstract: A method for estimating a target direction of a wideband signal received on an electronically steered array includes: applying convolutional or stretch processing to spatial frequency data of the wideband signal; initializing a stabilization direction to a beam pointing direction; stabilizing the spatial frequency data to the stabilization direction; compressing the spatial frequency data to a plurality of frequency range or time bins; selecting range or time bins and forming a covariance matrix; calculating an estimated target direction using the covariance matrix; determining if a stabilization direction accuracy condition is met; recalculating the stabilization direction based on the estimated target direction if the stabilization direction accuracy condition is not met; and iteratively repeating until the stabilization direction accuracy condition is met.
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3.发明授权Method and apparatus for enhanced multi-node utilization of an electromagnetic state space 有权用于增强电磁状态空间多节点利用的方法和装置公开(公告)号：US09377527B2
公开(公告)日：2016-06-28
申请号：US14078997
申请日：2013-11-13
Applicant: Raytheon Company
Inventor： Harry Marr , Charles T. Hansen , Brian Pierce
CPC classification number: G01S13/006 , G01S7/023 , G01S13/24 , H04W16/00
Abstract: Methods and systems are provided for efficiently packing nodes within an electromagnetic state space.
Abstract translation: 提供了用于有效地打包电磁状态空间内的节点的方法和系统。
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4.发明申请Method and Apparatus for Enhanced Multi-Node Utilization of an Electromagnetic State Space 有权用于增强电磁状态空间多节点利用的方法和装置公开(公告)号：US20150130656A1
公开(公告)日：2015-05-14
申请号：US14078997
申请日：2013-11-13
Applicant: Raytheon Company
Inventor： Harry Marr , Charles T. Hansen , Brian Pierce
IPC: G01S13/00
CPC classification number: G01S13/006 , G01S7/023 , G01S13/24 , H04W16/00
Abstract: Methods and systems are provided for efficiently packing nodes within an electromagnetic state space.
Abstract translation: 提供了用于有效地打包电磁状态空间内的节点的方法和系统。
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公开(公告)号：US12007468B2
公开(公告)日：2024-06-11
申请号：US17643639
申请日：2021-12-10
Applicant: Raytheon Company
Inventor： James D. Campbell , Charles T. Hansen
CPC classification number: G01S13/53 , G01S7/2883 , G01S13/003
Abstract: A circuit comprises a receive processing window formation subsystem, a matched filter subsystem, a keystone interpolation subsystem, a phase modulation subsystem, and an image forming subsystem. The receive processing window formation subsystem forms, for each radar return from a scene, a receive processing window containing the radar return as an unbroken radar return. The matched filter subsystem creates a motion model for a reference point target disposed at a predetermined location within the scene, based on a set of motion compensation parameters for range and range rate, to compensate for at least some effects of fast time Doppler on the reference point target. The keystone interpolation subsystem rescales slow time information from the matched filter subsystem. A phase modulation subsystem applies phase modulations to a keystone-interpolated 2-D output array of information associated with the scene, to ensure proper registration in a range-Doppler map output of the scene.
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Patent Agency Ranking
公开(公告)号：US20190179007A1
公开(公告)日：2019-06-13
申请号：US15838053
申请日：2017-12-11
Applicant: RAYTHEON COMPANY
Inventor： Charles T. Hansen
IPC: G01S13/90
CPC classification number: G01S13/90 , G01S13/904
Abstract: A system and method for forming synthetic aperture radar images. Radar return pulses are grouped into sub-dwells, and their frequency content is separated into frequency sub-bands. A coarse image is formed for each sub-band/sub-dwell combination. The coarse images are iteratively interpolated to higher resolution and combined, to form a single high-resolution synthetic aperture radar image.
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公开(公告)号：US20180102926A1
公开(公告)日：2018-04-12
申请号：US15287356
申请日：2016-10-06
Applicant: Raytheon Company
Inventor： Harry B. Marr , Mark J. Rosker , Justin Hodiak , Charles T. Hansen
IPC: H04L27/00 , H04L12/26 , H04L12/801
CPC classification number: H04B1/005 , H04B1/0053 , H04B1/0057 , H04L5/06
Abstract: A signal identification system includes an analog adaptive channelizer having a plurality of channels. Each channel has a channel size defined by a bandwidth and a gain. The system further includes an electronic signal identification (ID) controller in signal communication with the analog adaptive channelizer. The ID controller is configured to determine a dynamic range event that modifies an energy level of an affected channel among the plurality of channels, and output a feedback signal including channel parameters based on the dynamic range event. The analog adaptive channelizer actively adjusts at least one of the bandwidth and the gain of the affected channel based on the feedback to change the channel size of the affected channel.
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公开(公告)号：US10690767B2
公开(公告)日：2020-06-23
申请号：US15838053
申请日：2017-12-11
Applicant: RAYTHEON COMPANY
Inventor： Charles T. Hansen
IPC: G01S13/90
Abstract: A system and method for forming synthetic aperture radar images. Radar return pulses are grouped into sub-dwells, and their frequency content is separated into frequency sub-bands. A coarse image is formed for each sub-band/sub-dwell combination. The coarse images are iteratively interpolated to higher resolution and combined, to form a single high-resolution synthetic aperture radar image.
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公开(公告)号：US10348338B2
公开(公告)日：2019-07-09
申请号：US15287356
申请日：2016-10-06
Applicant: Raytheon Company
Inventor： Harry B. Marr , Mark J. Rosker , Justin Hodiak , Charles T. Hansen
Abstract: A signal identification system includes an analog adaptive channelizer having a plurality of channels. Each channel has a channel size defined by a bandwidth and a gain. The system further includes an electronic signal identification (ID) controller in signal communication with the analog adaptive channelizer. The ID controller is configured to determine a dynamic range event that modifies an energy level of an affected channel among the plurality of channels, and output a feedback signal including channel parameters based on the dynamic range event. The analog adaptive channelizer actively adjusts at least one of the bandwidth and the gain of the affected channel based on the feedback to change the channel size of the affected channel.
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10.发明申请MAXIMUM LIKELIHOOD ANGLE ESTIMATION OF WIDEBAND SIGNALS USING PHASED ARRAY ANTENNAS 有权使用相位阵列天线的宽带信号的最大似然角估计公开(公告)号：US20140132451A1
公开(公告)日：2014-05-15
申请号：US13889144
申请日：2013-05-07
Applicant: RAYTHEON COMPANY
Inventor： Charles T. Hansen
IPC: H01Q3/00
CPC classification number: H01Q3/00 , G01S3/32 , G01S3/46 , G01S7/295 , G01S13/02 , G01S13/0209 , G01S13/42 , G01S13/4454
Abstract: A method for estimating a target direction of a wideband signal received on an electronically steered array includes: applying convolutional or stretch processing to spatial frequency data of the wideband signal; initializing a stabilization direction to a beam pointing direction; stabilizing the spatial frequency data to the stabilization direction; compressing the spatial frequency data to a plurality of frequency range or time bins; selecting range or time bins and forming a covariance matrix; calculating an estimated target direction using the covariance matrix; determining if a stabilization direction accuracy condition is met; recalculating the stabilization direction based on the estimated target direction if the stabilization direction accuracy condition is not met; and iteratively repeating until the stabilization direction accuracy condition is met.
Abstract translation: 用于估计在电子导向阵列上接收的宽带信号的目标方向的方法包括：对宽带信号的空间频率数据应用卷积或拉伸处理; 将稳定方向初始化为光束指向方向; 将空间频率数据稳定到稳定方向; 将空间频率数据压缩到多个频率范围或时间箱; 选择范围或时间仓并形成协方差矩阵; 使用协方差矩阵计算估计的目标方向; 确定是否满足稳定方向精度条件; 如果不满足稳定方向精度条件，则基于所估计的目标方向重新计算稳定方向; 并迭代重复，直到达到稳定方向精度条件。
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