公开(公告)号：US12072439B2

公开(公告)日：2024-08-27

申请号：US17077947

申请日：2020-10-22

Applicant: Robert Bosch GmbH

Inventor： Thomas Binzer ,  Anna Khoreva ,  Juergen Hasch

IPC: G01S7/40 ,  G01S7/41

CPC classification number: G01S7/4052 ,  G01S7/412 ,  G01S7/417

Abstract: A method for generating synthetic measurement data indistinguishable from actual measurement data captured by a first physical measurement modality. The first physical measurement modality is based on emitting an interrogating wave towards an object and recording a reflected wave coming from the object in a manner that allows for a determination of the time-of-flight between the emission of the interrogating beam and the arrival of the reflected wave. The method includes: obtaining a first compressed representation of the synthetic measurement data in a first latent space, wherein this first latent space is associated with a first decoder that is trained to map each element of the first latent space to a record of synthetic measurement data that is indistinguishable from records of actual measurement data of the first physical measurement modality, and applying the first decoder to the first compressed representation, so as to obtain the sought synthetic measurement data.

公开(公告)号：US12007502B2

公开(公告)日：2024-06-11

申请号：US16999664

申请日：2020-08-21

Applicant: Raytheon Company

Inventor： Jaylan S. Jones ,  Donald M. Jones

IPC: H04B17/391 ,  G01S7/40 ,  G01S13/89 ,  G06F111/18

CPC classification number: G01S7/4052 ,  G01S13/89 ,  H04B17/3912 ,  G06F2111/18

Abstract: Embodiments of a system for simulating a radio frequency (RF) scene associated with a moving maritime surface are generally described herein. An RF scene is generated using an RF scene generation model and a moving maritime surface is generated using a maritime surface model. The RF scene is integrated with the moving maritime surface model. The RF scene generation model is configured to apply a radar model to generate and update the RF scene based on simulated radar returns at a radar pulse repetition frequency (PRF) and the maritime surface model is configured to update the moving maritime surface at a maritime surface update rate, access previous and current maritime surfaces, and interpolate surface facet properties to pulse times of the radar model. The maritime surface model is configured to update the moving maritime surface once every subdwell.

公开(公告)号：US11966673B2

公开(公告)日：2024-04-23

申请号：US16818551

申请日：2020-03-13

Applicant: NVIDIA Corporation

Inventor： Steen Kristensen ,  Alessandro Ferrari ,  Ayman Elsaeid

IPC: G06F30/27 ,  G01S7/40 ,  G01S7/41 ,  G06N3/088 ,  G01S13/931

CPC classification number: G06F30/27 ,  G01S7/4052 ,  G01S7/412 ,  G06N3/088 ,  G01S13/931 ,  G01S2013/9323 ,  G01S2013/9324

Abstract: In various examples, a sensor model may be learned to predict virtual sensor data for a given scene configuration. For example, a sensor model may include a deep neural network that supports generative learning—such as a generative adversarial network (GAN). The sensor model may accept an encoded representation of a scene configuration as an input using any number of data structures and/or channels (e.g., concatenated vectors, matrices, tensors, images, etc.), and may output virtual sensor data. Real-world data and/or virtual data may be collected and used to derive training data, which may be used to train the sensor model to predict virtual sensor data for a given scene configuration. As such, one or more sensor models may be used as virtual sensors in any of a variety of applications, such as in a simulated environment to test features and/or functionality of one or more autonomous or semi-autonomous driving software stacks.

公开(公告)号：US11965979B2

公开(公告)日：2024-04-23

申请号：US15734142

申请日：2019-07-04

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Jonathan Fischer

IPC: G01S7/40 ,  G01S7/52 ,  G01S13/931 ,  G01S13/00

CPC classification number: G01S7/4052 ,  G01S7/52004 ,  G01S7/4086 ,  G01S7/4095 ,  G01S13/931 ,  G01S2013/9324 ,  G01S2013/93271

Abstract: A test device for testing a detection device includes a reflection element with reflective surface where the reflective surface is a radar reflective surface and/or an ultrasound reflective surface. The reflection element is movable by a drive device periodically back and forth in a translational movement along a movement axis with respect to a housing of the test device. A movement of the reflection element produces a relative speed unequal to zero of the test device with respect to the detection device.

公开(公告)号：US20240111021A1

公开(公告)日：2024-04-04

申请号：US17961140

申请日：2022-10-06

Applicant: Zadar Labs, Inc.

Inventor： Mohammad EMADI ,  Ali MOSTAJERAN ,  Navid FATTAHI ,  Vitalii TOPOLNYTSKYI

IPC: G01S7/40 ,  G01S13/931

CPC classification number: G01S7/4034 ,  G01S7/4052 ,  G01S13/931

Abstract: A system and method to receive radar returns from objects in response to a first radar scan, wherein the radar returns include Doppler shift, run a segmentation algorithm multiple times on the received radar returns, using a different preset estimated radar yaw angle for each iteration, wherein the estimated radar yaw angles are for estimated directions of transmission of the radar signals along a radar boresight from the transmitter of the radar system relative to a predetermined direction for each run of the segmentation algorithm, to determine which of the objects are static objects using the segmentation algorithm, and determine a first calibrated radar yaw angle as one of the preset estimated radar yaw angles which, among the different preset estimated radar yaw angles, has a highest number of adjusted radar returns for objects determined to be static objects by the segmentation algorithm.

公开(公告)号：US11933912B2

公开(公告)日：2024-03-19

申请号：US16862310

申请日：2020-04-29

Applicant: Rohde & Schwarz GmbH & Co. KG

Inventor： Gerhard Hamberger ,  Matthias Beer ,  Benoit Derat

IPC: G01S7/40

CPC classification number: G01S7/4052 ,  G01S7/40 ,  G01S7/4069

Abstract: A test system for testing a radar sensor comprising a test chamber for encompassing a radar sensor to be tested. A test location is provided within the test chamber on which the radar sensor to be tested is placed for testing. Further, the test system comprises at least one antenna unit and at least one first radar target simulator connected to the antenna unit. The test system also comprises at least one antenna array different to the antenna unit and at least one second radar target simulator connected to the antenna array.

公开(公告)号：US11763695B2

公开(公告)日：2023-09-19

申请号：US17600706

申请日：2019-04-04

Applicant: Siemens Industry Software NV

Inventor： Thijs Van Putten

IPC: G09B9/54 ,  G01S7/40 ,  G01S13/58 ,  G01S13/931

CPC classification number: G09B9/54 ,  G01S7/4052 ,  G01S13/582 ,  G01S13/931

Abstract: A method and system for computer-implemented simulation of radar raw data, where the radar raw data are generated for a synthetic MIMO radar system including a transmitter array of several transmitters for transmitting radar signals and a receiver array of several receivers for receiving radar echoes of the radar signals. In this method, ray tracing of a radar signal sent from a preset transmitting position within the transmitter array and received at a preset receiving position within the receiver array is performed based on a 3D model of a virtual area adjacent to the MIMO radar system, where the ray tracing determines propagations of a plurality of rays within the radar signal from the preset transmitting position to the preset receiving position. The propagation of each ray is dependent on a first angle and a second angle describing the direction of a respective ray at the preset transmitting position. By using first-order derivatives with respect to the first angle and the second angle, propagations of a plurality of modified rays originating from a respective transmitter and received at a respective receiver are determined based on a linear approximation. The modified rays are processed in order to determine the radar raw data.

公开(公告)号：US11740326B2

公开(公告)日：2023-08-29

申请号：US16822197

申请日：2020-03-18

Applicant: HONEYWELL FEDERAL MANUFACTURING & TECHNOLOGIES, LLC

Inventor： Audrey L. Chritton

IPC: G01S7/40

CPC classification number: G01S7/4052 ,  G01S7/4021 ,  G01S7/4095

Abstract: A simulation system for use in testing a radar system comprises a coarse delay module, a fine delay module, and a doppler shift module. The coarse delay module is configured to receive a first stream of digital data samples that are sampled from a radar signal at a sample time period or a second stream of digital data samples that are processed by another simulation system component and delay the digital data samples by a selectable first delay time that is greater than or equal to the sample time period. The fine delay module is configured to receive the digital data samples and filter the digital data samples to represent delay by a selectable second delay time that is less than the sample time period. The doppler shift module is configured to receive the digital data samples and adjust a value of a frequency content of the fine delayed samples.

公开(公告)号：US20230144796A1

公开(公告)日：2023-05-11

申请号：US17587640

申请日：2022-01-28

Applicant: DeepSig Inc.

Inventor： Daniel DePoy ,  Timothy Newman ,  Nathan West ,  Tamoghna Roy ,  Timothy James O'Shea ,  Jacob Gilbert

IPC: G06N20/00 ,  G01S13/42 ,  G01S7/40

CPC classification number: G06N20/00 ,  G01S13/426 ,  G01S7/4052

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for positioning a radio signal receiver at a first location within a three dimensional space; positioning a transmitter at a second location within the three dimensional space; transmitting a transmission signal from the transmitter to the radio signal receiver; processing, using a machine-learning network, one or more parameters of the transmission signal received at the radio signal receiver; in response to the processing, obtaining, from the machine-learning network, a prediction corresponding to a direction of arrival of the transmission signal transmitted by the transmitter; computing an error term by comparing the prediction to a set of ground truths; and updating the machine-learning network based on the error term.

公开(公告)号：US11644536B2

公开(公告)日：2023-05-09

申请号：US17083810

申请日：2020-10-29

Applicant: Eastern OptX, Inc.

Inventor： Howard Salvesen ,  Edward J. MacMullen ,  Joseph Mazzochette ,  Jerome Lomurno

IPC: G01S7/40 ,  G01S7/285

CPC classification number: G01S7/4052 ,  G01S7/285 ,  G01S7/406 ,  G01S7/4065 ,  G01S7/4069

Abstract: A system simulates a moving target for a radar system under test. The system includes a Doppler simulation circuit (DSC), coupled to an input, to apply a frequency shift to RF pulses received on an RF signal to simulate speed. A signal attenuator coupled to the DSC is to simulate signal attenuation due to propagation loss of the RF pulses in atmosphere. A pulse detection circuit is to detect time of receipt of the RF pulses, including a first time of receipt of a falling edge of a first RF pulse. An I/O controller updates a value of the frequency shift for the DSC and of the signal attenuation for the signal attenuator during a time period between the first RF pulse and one of a second RF pulse or a second time at which the second RF pulse should have been received in case of a missing pulse.