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公开(公告)号：US20240053437A1
公开(公告)日：2024-02-15
申请号：US18449618
申请日：2023-08-14
申请人： Zadar Labs, Inc
发明人： Mohammad EMADI , Ali MOSTAJERAN , Mahmoud SAADAT
CPC分类号： G01S7/403 , G01S7/4034 , G01S7/292 , G01S13/42 , G01S2013/93271
摘要： Disclosed herein are systems and methods for radar networking for improved angular resolution. In an embodiment, a radar network includes a first radar and a second radar attached to a vehicular platform or another appropriate platform. Through coarse beamforming from each radar, a landmark is detected. The landmark's rough location in the first radar's coordinate and the landmark's rough location in the second radar coordinate are determined. The radar network is calibrated, by setting the first radar's location as the reference location and determining the second radar's location relative to it. Phase differences that may arise from relative positional or timing misalignment between the radars may be compensated. Fine beamforming is performed on the calibrated radars, and data from the fine beamforming is processed with the pre-detected target data to cancel out grating lobes.
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公开(公告)号：US12066568B2
公开(公告)日：2024-08-20
申请号：US17423828
申请日：2020-01-10
发明人： Stefan Zechner , Benjamin Sick
IPC分类号： G01S7/40 , G01S13/42 , G01S13/931
CPC分类号： G01S7/4026 , G01S7/403 , G01S7/4034 , G01S13/426 , G01S13/931 , G01S2013/93271
摘要： A device includes an input interface for receiving a target list for the MIMO radar sensor containing angular data including information regarding a target angle, at which the target is located, and channel data including information regarding reflection signals received from the target in individual channels in the MIMO radar sensor; a modeling unit for generating model data for each of the targets; a processor for determining a model error for each of the targets, containing information regarding a discrepancy between the channel data and the model data for the target; a selector for selecting one of the targets on the basis of the model error; and an adjustment unit for determining calibration coefficients for adjusting the channel outputs in the MIMO radar that compensate for the discrepancies between the channel data and the model data.
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公开(公告)号：US20240192349A1
公开(公告)日：2024-06-13
申请号：US18581876
申请日：2024-02-20
CPC分类号： G01S13/343 , G01S7/4026 , G01S7/403 , G01S7/4034 , G01S2013/0245
摘要： A radar device includes: a control circuit which, in operation, selects at least one of a plurality of transmission antennas in each of determined transmission periods; and a plurality of transmission circuits which, in operation, transmit at least one transmission signal in every transmission period using the selected at least one of the plurality of transmission antennas. The control circuit, in operation, selects a first transmission antenna of the plurality of transmission antennas once in the determined transmission periods, and selects remaining second transmission antennas of the plurality of transmission antennas a plurality of times in the determined transmission periods.
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公开(公告)号：US11860299B2
公开(公告)日：2024-01-02
申请号：US16810461
申请日：2020-03-05
发明人： Tobias Breddermann
IPC分类号： G01S7/35 , G01S13/931 , G01S7/40
CPC分类号： G01S7/354 , G01S13/931 , G01S7/356 , G01S7/403 , G01S7/4034
摘要： A method for measuring an elevation angle and/or azimuth angle with an antenna array. Identical transmitted signals that are formed of successive linear-frequency-modulated ramps are transmitted through the transmitting antennas of the antenna array using time division multiplexing, wherein the time division multiplexing is achieved through alternating attenuation of the signals transmitted by the transmitting antennas. Echoes of the transmitted signals are received by the receiving antennas and are down-converted to a baseband and sampled. The down-converted and sampled echoes are transformed by an FFT into a 2D image domain. Phase differences are determined from the image data, and, in order to compensate for a systematic error present because of the lack of separation of the two transmitted signals, an error-compensated elevation angle and/or an error-compensated azimuth angle is determined by means of a compensation.
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公开(公告)号：US11852731B2
公开(公告)日：2023-12-26
申请号：US17416895
申请日：2019-12-20
申请人： dSPACE GmbH
IPC分类号： G01S17/93 , G01S17/931 , G01S7/40 , G01S7/497 , G01S13/931
CPC分类号： G01S17/931 , G01S7/403 , G01S7/4034 , G01S7/4086 , G01S7/4972 , G01S13/931 , G01S7/4095 , G01S2013/9323
摘要： A test bench (1) is described and shown for testing a distance sensor (2) operating with electromagnetic waves, wherein the distance sensor (2) to be tested comprises at least one sensor radiating element (3a) for radiating a transmission signal (4) and a sensor receiving element (3b) for receiving a reflection signal, with a receptacle (5) for holding the distance sensor (2) to be tested, with an at least partially movable connecting member (6, 6m, 6s) in the radiation area of a distance sensor (2) held in the receptacle (5), with at least one test bench receiving element (7) held in the connecting member (6, 6m, 6s) for receiving a transmission signal (4) radiated by the sensor radiating element (3a), and with at least one test bench radiating element (8) held in the connecting member (6) for radiating a test bench transmitting signal (9) as a simulated reflection signal.
A reliable environment simulation, in particular for the testing of multiple input-multiple output distance sensors (2) is achieved in that at least one test bench receiving element (7, 7a, 7b) and one test bench radiating element (8, 8a, 8b) are arranged together in a movable part (6m) of the connecting member (6).-
公开(公告)号：US20230168363A1
公开(公告)日：2023-06-01
申请号：US17538528
申请日：2021-11-30
申请人： Argo AI, LLC
发明人： Yu-Wei CHANG , Hsin MIAO , Duc VU , Jonathan BERRY , Dikpal REDDY
CPC分类号： G01S13/867 , G01S7/4972 , G01S7/403 , G01S7/4034 , G01S13/865 , G01S13/931
摘要： A method may include receiving at least one camera frame of a first radar target and a second radar target, determining an estimated radar pose based at least in part on the at least one received camera frame, receiving a first radar cross-section (RCS) response from the first radar target and second radar target, determining an estimated elevation angle based at least in part on the first RCS response, and determining an estimated radar angle by refining the estimated radar pose and the estimated elevation angle based on at least in part on the first RCS response.
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公开(公告)号：US12072438B2
公开(公告)日：2024-08-27
申请号：US17313414
申请日：2021-05-06
申请人： HL KLEMOVE CORP.
发明人： Han Byul Lee , Ho Young Jin , Jae Hyun Han , Jung Hwan Choi , Jingu Lee
IPC分类号： G01S7/40 , G01S13/931
CPC分类号： G01S7/4034 , G01S7/40 , G01S13/931 , G01S2013/93271
摘要： The present disclosure relates to a device and method for detecting vertical misalignment of a vehicle radar device and vehicle radar device with the same. A radar device according to an embodiment determines a monitoring range including the ground in front by using the radar signal, determines an error of vertical angles for a number of ground distances within the monitoring range, and detects the vertical mounting misalignment of the radar device by using the error. According to embodiments, it is possible to accurately determine the vertical mounting misalignment of the radar device even if there is a road surface non-uniformity, road slope, or radar beam width change.
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公开(公告)号：US20240230891A1
公开(公告)日：2024-07-11
申请号：US18404988
申请日：2024-01-05
CPC分类号： G01S13/95 , G01S7/024 , G01S7/4034 , G01S2013/0254
摘要： A system comprises an antenna array and a system controller and signal processor. The antenna array is formed from a plurality of antenna modules, each configured to operate in a horizontal polarization mode or a vertical polarization mode. The antenna array is configured to transmit a system beam and receive reflections of the system beam using the horizontal polarization mode, the vertical polarization mode, a right-hand circular polarization mode, or a left-hand circular polarization mode according to the polarization modes of the antenna modules. The system controller and signal processor is configured to set the polarization mode of each antenna module individually, control the antenna array or a first portion thereof to transmit the system beam using a first one of the polarization modes and control the antenna array or a second portion thereof to receive reflections of the system beam using a second one of the polarization modes.
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公开(公告)号：US20240159866A1
公开(公告)日：2024-05-16
申请号：US18505436
申请日：2023-11-09
发明人： Denis Belokurov , Sebastian Breunig , Alexej Bohr
IPC分类号： G01S7/40
CPC分类号： G01S7/4026 , G01S7/403 , G01S7/4034
摘要： A method for calibrating a radar system includes disposing the radar sensor at a vehicle and disposing an object at a first location relative to the vehicle. Using sensor data captured by the radar sensor with the object at the first location, a first location of the object relative to the radar sensor is determined. The object is moved along an intended principal axis of sensing for the radar sensor from the first location to a second location. Using sensor data captured by the radar sensor with the object at the second location, a second location of the object relative to the radar sensor is determined. Using the first determined location of the object and the second determined location of the object, a misalignment of the radar sensor is determined. The radar system is calibrated based at least in part on the misalignment.
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公开(公告)号：US11940524B2
公开(公告)日：2024-03-26
申请号：US17952824
申请日：2022-09-26
CPC分类号： G01S13/343 , G01S7/4026 , G01S7/403 , G01S7/4034 , G01S2013/0245
摘要： A radar device includes radar transmission and receiving circuits. The radar transmission circuit transmits one or more transmission signals, each having a transmission period Tr. The radar receiving circuit receives one or more reflected signals in which the transmission signals are reflected by an object and estimates a direction of the object based on the reflected signals. The radar transmission circuit includes Nt transmission antennas. A control circuit sets a transmission gap period between a first and second periods, with the transmission gap period being a period during which the transmission signals are not transmitted. The first period is equal to an integral multiple of a period Np, the period Np is equal to or more than Nt times the transmission period Tr, and the second period is set after the first period and is equal to an integral multiple of the period Np.
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