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公开(公告)号：US20230102079A1
公开(公告)日：2023-03-30
申请号：US17654031
申请日：2022-03-08
Applicant: Aptiv Technologies Limited
Inventor： Xiuzhang Cai , Bruno F. Camps Raga , Alexander Ioffe , Mohannad Saifo
IPC: G01S13/931 , G01S7/40 , G09B9/54
Abstract: This document describes techniques and systems for accurate and efficient electromagnetic response for a sensor simulator. Target information and sensor parameters for an electromagnetic sensor are simulated in an environment that includes a ground plane. Electromagnetic rays that may be detected by the sensor or an image of the sensor are launched from the simulated sensor toward the target and an image of the target about the ground plane to determine a complex electromagnetic response of the target. A ray-tracing algorithm is applied to trace the forward wave propagation of electromagnetic rays in the environment that considers rays bouncing between the target and the image of the target. An electromagnetic response can be modeled based on the congregation of the electromagnetic response of all backward paths of all bounces of all rays. In this manner, an efficient and accurate electromagnetic response model may be approximated.
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公开(公告)号：US20230072642A1
公开(公告)日：2023-03-09
申请号：US17931009
申请日：2022-09-09
Applicant: Aptiv Technologies Limited
Inventor： Alexander Ioffe
Abstract: Disclosed are aspects of an antenna including a body having a convex surface. A conductive structure is deposited onto an antenna region of the convex surface. The conductive structure is configured as a conformal slot antenna array. The antenna region of the convex surface includes corrugations having peaks and valleys. A plurality of slots of the conformal slot antenna array are located at the peaks and the valleys of the convex surface.
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公开(公告)号：US11131766B2
公开(公告)日：2021-09-28
申请号：US16359301
申请日：2019-03-20
Applicant: Aptiv Technologies Limited
Inventor： Honghui Yan , Tao Zhang , Wolfgang Doerr , Alexander Ioffe
Abstract: In a method for the recognition of an object by means of a radar sensor system, a primary radar signal is transmitted into an observation space, a secondary radar signal reflected by the object is received, a Micro-Doppler spectrogram of the secondary radar signal is generated, and at least one periodicity quantity relating to an at least essentially periodic motion of a part of the object is determined based on the Micro-Doppler spectrogram. The determining of the at least one periodicity quantity includes the following steps: (i) determining the course of at least one periodic signal component corresponding to an at least essentially periodic pattern of the Micro-Doppler spectrogram, (ii) fitting a smoothed curve to the periodic signal component, (iii) determining the positions of a plurality of peaks and/or valleys of the smoothed curve, and (iv) determining the periodicity quantity based on the determined positions of peaks and/or valleys.
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公开(公告)号：US20190310362A1
公开(公告)日：2019-10-10
申请号：US16359301
申请日：2019-03-20
Applicant: Aptiv Technologies Limited
Inventor： Honghui Yan , Tao Zhang , Wolfgang Doerr , Alexander Ioffe
Abstract: In a method for the recognition of an object by means of a radar sensor system, a primary radar signal is transmitted into an observation space, a secondary radar signal reflected by the object is received, a Micro-Doppler spectrogram of the secondary radar signal is generated, and at least one periodicity quantity relating to an at least essentially periodic motion of a part of the object is determined based on the Micro-Doppler spectrogram. The determining of the at least one periodicity quantity includes the following steps: (i) determining the course of at least one periodic signal component corresponding to an at least essentially periodic pattern of the Micro-Doppler spectrogram, (ii) fitting a smoothed curve to the periodic signal component, (iii) determining the positions of a plurality of peaks and/or valleys of the smoothed curve, and (iv) determining the periodicity quantity based on the determined positions of peaks and/or valleys.
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公开(公告)号：US20240411011A1
公开(公告)日：2024-12-12
申请号：US18331105
申请日：2023-06-07
Applicant: Aptiv Technologies Limited
Inventor： Fang Chen , Xiuzhang Cai , Bruno F. Camps Raga , Maryam Simons , Alexander Ioffe
Abstract: This document describes techniques and systems for electromagnetic response simulation for arbitrary road surface profiles. An electromagnetic response simulator receives a position and an orientation of both an electromagnetic sensor (e.g., radar sensor) and a target, and a geometric profile of a road surface. The road surface may vary in elevation in the lateral and/or longitudinal directions. The electromagnetic response simulator estimates reflection points of electromagnetic rays along the geometric profile of the road surface and translates the positions and the orientations of the electromagnetic sensor and the target into respective local coordinates corresponding to each reflection point. The electromagnetic responses can then be calculated, corresponding simulated rays can be output to a sensor simulator. In this manner, the variance in elevation of a road surface can be included in generating simulated rays, and the electromagnetic response simulator may more accurately simulate real-world electromagnetic responses.
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Patent Agency Ranking
公开(公告)号：US20230258770A1
公开(公告)日：2023-08-17
申请号：US18154651
申请日：2023-01-13
Applicant: Aptiv Technologies Limited
Inventor： Alexander Ioffe , Mohannad Saifo , Markus Stefer
IPC: G01S7/40 , G01S13/931 , G01S7/41
CPC classification number: G01S7/4082 , G01S13/931 , G01S7/41
Abstract: This document describes techniques and systems for enabling more-accurate single-point radar cross section (RCS) approaches for radar simulations without introducing orders of complexity. For automotive radar applications, considering variations in RCS radial patterns, with both angle and range, and because of analytically calculated multi-path effects and near-field RCS effects improves simulation accuracy by incorporating multi-path phenomenon that is present due to ground reflections. The described techniques are performed without using full scale ray-tracing or other computationally demanding techniques.
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公开(公告)号：US20230099845A1
公开(公告)日：2023-03-30
申请号：US17654039
申请日：2022-03-08
Applicant: Aptiv Technologies Limited
Inventor： Xiuzhang Cai , Bruno F. Camps Raga , Alexander Ioffe , Mohannad Saifo
Abstract: This document describes techniques and systems for a modified ray-tracer for an electromagnetic response simulator. Electromagnetic ray information, including a starting point and direction, is received. A potential target can be determined to be hit by the electromagnetic ray by converting the electromagnetic ray information from a global coordinate system of the environment to a local coordinate system of the potential target. The potential target is hit by the electromagnetic ray if a facet of the potential target is computed to be hit by the ray. The computations, performed in the local coordinate system of the potential target, include a simplified large element physical optics formulation for parallel rays. An electromagnetic response related to the potential target can be calculated if the facet of the potential target was determined to be hit. In this manner, an efficient and accurate electromagnetic response model may be approximated.
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公开(公告)号：US20220197301A1
公开(公告)日：2022-06-23
申请号：US17367289
申请日：2021-07-02
Applicant: Aptiv Technologies Limited
Inventor： Mohamed A. Moawad , Aniello Sorrentino , Nanhu Chen , Michael H. Laur , Jakub Porebski , Amith Somanath , Aron Sommer , Kai Zhang , Uri Iurgel , Alexander Ioffe , Krzysztof Kogut , Ceyhan Karabulut , Damjan Karanovic
Abstract: This document describes methods and systems for vehicle localization based on radar detections. Radar localization starts with building a radar reference map. The radar reference map may be generated and updated using different techniques as described herein. Once a radar reference map is available, real-time localization may be achieved with inexpensive radar sensors and navigation systems. Using the techniques described in this document, the data from the radar sensors and the navigation systems may be processed to identify stationary localization objects, or landmarks, in the vicinity of the vehicle. Comparing the landmark data originating from the onboard sensors and systems of the vehicle with landmark data detailed in the radar reference map may generate an accurate pose of the vehicle in its environment. By using inexpensive radar systems and lower quality navigation systems, a highly accurate vehicle pose may be obtained in a cost-effective manner.
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公开(公告)号：US20220163653A1
公开(公告)日：2022-05-26
申请号：US17456118
申请日：2021-11-22
Applicant: Aptiv Technologies Limited
Inventor： Alexander Ioffe , Uri Iurgel , Dariusz Cieslar
IPC: G01S13/46 , G01S13/931
Abstract: Provided is method for determining free space surrounding a device, the method comprising: acquiring radar data regarding each of one or more radar antennas, the acquired radar data comprising range data and range rate data; extracting, from the acquired radar data, a specific set of radar data having values equal to or below a noise-based threshold; and determining a free space around the device based on the extracted specific set of radar data.
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20.发明申请公开(公告)号：US20220067395A1
公开(公告)日：2022-03-03
申请号：US17460895
申请日：2021-08-30
Applicant: Aptiv Technologies Limited
Inventor： Premnaath Sukumar , Aniello Sorrentino , Alexander Ioffe
Abstract: A computer implemented method for determining an occupancy map in the vicinity of a vehicle comprises the following steps: successively acquiring sensor data of a sensor system, determining object detections based on the sensor data, overlaying the object detections in a spatial representation of the vicinity of the vehicle, defining, for an object detection of a first data acquisition process, an expectation area extending around the object detection, adjusting, if an object detection of a second data acquisition process is present within the expectation area, the position of the expectation area based on a difference between the position of the object detection of the first data acquisition process and the position of the object detection of the second data acquisition process, and removing an object detection of the expectation area from the occupancy map if no object detection can be determined in the expectation area for a predetermined number of successive data acquisition processes.
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