公开(公告)号：US2589813A

公开(公告)日：1952-03-18

申请号：US59672445

申请日：1945-05-30

申请人： US SEC WAR

发明人： HULSIZER JR ROBERT I

IPC分类号： G01S13/68

CPC分类号： G01S13/68

公开(公告)号：US2587653A

公开(公告)日：1952-03-04

申请号：US47568043

申请日：1943-02-12

申请人： JOHN RUZE

发明人： JOHN RUZE

IPC分类号： G01S13/68

CPC分类号： G01S13/68

公开(公告)号：US2564694A

公开(公告)日：1951-08-21

申请号：US47886243

申请日：1943-03-12

申请人： HUBER WILLIAM A ,  POPE JR WILLIAM T

发明人： HUBER WILLIAM A ,  POPE JR WILLIAM T

IPC分类号： G01S7/06 ,  G01S13/68

CPC分类号： G01S13/68 ,  G01S7/06

公开(公告)号：US20240288562A1

公开(公告)日：2024-08-29

申请号：US18176295

申请日：2023-02-28

申请人： Aptiv Technologies Limited

发明人： Xin Zhang ,  Zhengzheng Li ,  Yu Zhang

IPC分类号： G01S13/00 ,  G01S13/68 ,  G01S13/931

CPC分类号： G01S13/003 ,  G01S13/68 ,  G01S13/931

摘要： This document describes a radar system to universally detect direct-of-arrival (DoA) and direction-of-departure (DoD) angles in direct-path and multipath reflection conditions. For example, a radar system includes a transmitter and receiver array with a first array forming a minimum redundancy array and a second array forming a sparse uniform linear array. A processor determines, using second-array measurements, estimated angles. The quantity of estimated angles is larger than the quantity of actual angles due to angular ambiguity of the second array. The processor then identifies multiple potential sets of actual angles from among the estimated angles and tests each set under a maximum likelihood criterion using first-array measurements. The DoA and DoD angles are identified as the respective set with a maximum utility function value. In this way, the processor determines actual angles with improved resolution and reduced cost without having to identify whether a direct-path or multipath reflection condition exists.

公开(公告)号：US12055621B2

公开(公告)日：2024-08-06

申请号：US17280691

申请日：2019-12-17

申请人： Robert Bosch GmbH

发明人： Chun Yang ,  Sebastian Muenzner ,  Fabian Timm ,  Jasmin Ebert ,  Zoltan Karasz

IPC分类号： G01S13/68 ,  G01S7/41 ,  G01S13/42 ,  G01S13/931

CPC分类号： G01S13/68 ,  G01S7/415 ,  G01S7/417 ,  G01S13/42 ,  G01S13/931 ,  G01S2013/9318

摘要： A method for determining the spatial orientation of an object from at least one measuring signal which includes the response of the object to electromagnetic interrogation radiation. A method for predicting the trajectory of at least one object from at least one measuring signal which includes the response of the object to electromagnetic interrogation radiation, in conjunction with a scalar velocity of the object. A method for training a classifier and/or a regressor.

公开(公告)号：US20230086891A1

公开(公告)日：2023-03-23

申请号：US17480814

申请日：2021-09-21

申请人： GM Global Technology Operations LLC

发明人： Ofer Bar Shalom

IPC分类号： G01S13/68 ,  G01S13/931

摘要： A system in a vehicle includes a radar system with a uniform linear array (ULA) of antenna elements and a uniform rectangular array (URA) of antenna elements to receive the reflected signals resulting from the emitted radio frequency energy. The ULA is arranged perpendicular to the URA. Processing circuitry estimates one or more elevation angles using the reflected signals received by the ULA of antenna elements and estimates an azimuth angle corresponding to each of the one or more elevation angles using the one or more elevation angles and the reflected signals received by the URA of antenna elements. Each of the one or more elevation angles and the corresponding one of the azimuth angles is referred to as an angle of arrival (AOA) of the reflected signals from an object. Control of an operation of the vehicle is based on each AOA of each object.

公开(公告)号：US20220413120A1

公开(公告)日：2022-12-29

申请号：US17581748

申请日：2022-01-21

申请人： Samsung Electronics Co., Ltd.

发明人： Vutha Va ,  Boon Loong Ng ,  Anum Ali ,  Jianhua Mo

IPC分类号： G01S13/68 ,  G01S7/41

摘要： An electronic device includes a processor operably connected to a radar transceiver. The processor is configured to transmit, via the radar transceiver, radar signals to detect an object. The processor is also configured to detect the object using a single radar frame or multiple radar frames from the radar signals. The processor is further configured to determine whether to use the single radar frame or the multiple radar frames based on motion of the object for angle identification between the object and the electronic device. Additionally, the processor is configured to identify the angle using the single radar frame based on a determination to use the single radar frame or the multiple radar frames based on a determination to use the multiple radar frames. The processor is also configured to modify radio frequency exposure levels based on the angle of the object relative to the electronic device.

公开(公告)号：US11175395B2

公开(公告)日：2021-11-16

申请号：US16163721

申请日：2018-10-18

申请人： BAE SYSTEMS Information and Electronic Systems Integration Inc.

发明人： Quang M. Lam

IPC分类号： G01S13/68 ,  G01S13/42 ,  G01S13/72

摘要： An angle only (AO) target state estimation (TSE) system and method using a mixed coordinate system (Modified Spherical Coordinate (MSC) and Reference Cartesian Coordinate (RCC)) as an integrated system. This integrated system is achieved due to the state vector information of two frames (RCC and MSC) is effectively preserved between processing cycles and state vector transformation steps. The AO TSE architecture and processing schemes are applicable to a wide class of passive sensors. The mixed coordinate system provides robust real-time slant range estimation in a bootstrap fashion, thus turning passive AO measurements into equivalent active sensor measurements with built-in recursive range information but with greatly improved the TSE accuracy meeting the miss distance required by many engagement missions.

公开(公告)号：US11047973B2

公开(公告)日：2021-06-29

申请号：US16126197

申请日：2018-09-10

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Oded Bialer ,  Igal Bilik

IPC分类号： G01S13/68 ,  G01S13/931 ,  G01S13/02 ,  G01S7/40 ,  G01S7/35

摘要： A vehicle, radar system and method of determining an angle of arrival of an object is disclosed. A radar array generates a linear frequency modulated source signal and includes a first channel and a second channel for receiving a reflection of the source signal from the object. A processor obtains a channel response for the first radar channel and for the second radar channel over a bandwidth of the source signal, partitions the frequency band into a plurality of frequency sub-bands, determines a variation between the first and second channel responses for a selected frequency sub-band, receives a reflection of the source signal at the first channel and at the second channel, corrects at least the second channel within the frequency sub-band using the determined variation, and determines an angle of arrival for the object based on the correction within the frequency sub-band.

公开(公告)号：US10996328B2

公开(公告)日：2021-05-04

申请号：US16749594

申请日：2020-01-22

申请人： L-3 Communications Corp.

发明人： Sy Prestwich ,  Jeffrey B. Bench ,  Richard A. McNamee

IPC分类号： G01S13/68 ,  G01S13/44

摘要： A mainlobe detection process can include a number of tests that are performed to define when the monopulse antenna system will transition from open loop scanning to closed loop scanning and then to tracking. A hybrid tracking technique is also provided which adaptively discovers and corrects for phase alignment error. Magnitude-only tracking can be performed initially to locate the nulls in the azimuth and elevation ratios and to identify the magnitudes of these ratios at these nulls. Phase tracking can be then performed. During phase tracking, phase corrections can be repeatedly applied to the azimuth and elevation difference channels to correct any phase error that may exist. During this process, the magnitudes of the ratios can be used to determine how the phase corrections should be adjusted. Once the hybrid tracking process is complete, the monopulse antenna system is properly phase-aligned and phase tracking will be correctly employed.