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公开(公告)号：US20240353524A1
公开(公告)日：2024-10-24
申请号：US18305306
申请日：2023-04-21
Applicant: GM Cruise Holdings LLC
Inventor： Jessica Bartholdy SANSON , Johanna GÜTLEIN-HOLZER , Gustavo Adolfo GUARÍN ARISTIZABAL , Jorge Julio Jácome MUÑOZ , Andreas BARTHELME , Kalin Hristov KABAKCHIEV , Andre GIERE
IPC: G01S7/02 , G01S13/536 , G01S13/56
CPC classification number: G01S7/0233 , G01S13/536 , G01S13/56
Abstract: A radar system comprises a plurality of transmit antennas that transmit a radar signal toward a target, wherein respective transmit antennas are assigned a transmitter-specific phase offset via which the radar signal is modulated, and wherein respective phase offsets correspond to an offset in velocity of a target. The system further comprises a plurality of receive antennas that receive comprising transmitted signals reflected by the target, and one or more processors configured to determine whether a peak signal is present for respective transmitted signals reflected by the target, the peak signals corresponding to perceived velocities at which the target is moving.
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公开(公告)号：US20250020768A1
公开(公告)日：2025-01-16
申请号：US18446448
申请日：2023-08-08
Applicant: GM Cruise Holdings LLC
Inventor： Andre GIERE , Jessica Bartholdy SANSON , Jorge Julio JÁCOME MUÑOZ , Andreas BARTHELME , Johanna GÜTLEIN-HOLZER , Kalin Hristov KABAKCHIEV
Abstract: A radar system comprises a plurality of receive antennas that receive a radar signal. One or more processors are configured to perform acts selecting one or more training cells for noise power estimation based upon a radar signal received at one or more receive antennas. The acts further comprise calculating a mean noise power value for the one or more training cells and calculating a noise power variance for the one or more training cells. The acts also comprise estimating a probability of false alarm (PFA) threshold to be applied for a non-training cell and estimating a PFA threshold offset based on the noise power variance. The acts further comprise adjusting a current PFA threshold offset based on the estimated PFA threshold offset.
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公开(公告)号：US20240230871A1
公开(公告)日：2024-07-11
申请号：US18099237
申请日：2023-01-19
Applicant: GM Cruise Holdings LLC
Inventor： Jorge Julio Jácome MUÑOZ , Johanna GÜTLEIN-HOLZER
CPC classification number: G01S13/42 , G01S7/03 , G01S13/89 , G01S13/931
Abstract: Technologies described herein relate to a multi-step direction of arrival estimation for imaging radars. A radar system includes X transmitter antennas that output radar signals into an environment and Y receiver antennas that generate detection signals based upon the receiving radar signals output by the transmitter antennas. The system separates the detection signals into N virtual receivers that generate a data cube. The system extracts first values from the data cube that correspond to a first set of virtual receivers and computes a first direction of arrival with respect to a target in the environment based on the first values. The system then computes a second direction of arrival with respect to the target in the environment, that is based upon the first direction of arrival and second values in the data cube that correspond to a second set of virtual receivers.
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公开(公告)号：US20250052895A1
公开(公告)日：2025-02-13
申请号：US18468670
申请日：2023-09-15
Applicant: GM Cruise Holdings LLC
Inventor： Jessica Bartholdy SANSON , Kalin Hristov KABAKCHIEV , Andreas BARTHELME , Johanna GÜTLEIN-HOLZER , Andre GIERE
IPC: G01S13/931 , G01S13/42
Abstract: Various technologies described herein pertain to systems and methods for increasing radar resolution by, for example, combining radar information. In one embodiment, beamforming is performed using radar units that are individually coherent but collectively do not need to be coherent. Each radar transmits and receives its own signal to process and generate target information including beamforming information and/or virtual receiver channel information. The target information from each radar is then merged or summed into a combined beamforming based on all the target information received from all the radar units. When the radar units used in this manner are separated by a distance, the resulting beamforming information is representative of an aperture/resolution based on the total space or distance between the radar units. Thus, having an improved resolution, benefits such as improved target resolution (e.g., size, position, and detection) can be achieved.
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公开(公告)号：US20250052886A1
公开(公告)日：2025-02-13
申请号：US18461488
申请日：2023-09-05
Applicant: GM Cruise Holdings LLC
Inventor： Jessica Bartholdy SANSON , Johanna GÜTLEIN-HOLZER , Andreas BARTHELME , Kalin Hristov KABAKCHIEV , Andre GIERE
IPC: G01S13/58 , G01S7/35 , G01S13/931
Abstract: A radar sensor system comprises a first radar sensor and at least a second radar sensor and one or more processors configured to assign different pulse rate intervals (PRI) to the first radar sensor and the second radar sensor. The processor(s) s are further configured to: receive ambiguous velocity estimates from the first and second radar sensors, respectively; determine maximum detectable velocity (Vmax) values for the first and second radar sensors based on their respective PRIs; generate a first velocity vector for the first radar sensor based on the first Vmax and the first ambiguous velocity estimate; generate a second velocity vector for the second radar sensor based on the second Vmax and the second ambiguous velocity estimate; compare velocity values in the first and second velocity vectors; and identify and output a velocity value common to the first and second velocity vectors as a correct unambiguous velocity of the object.
