公开(公告)号：US20230393256A1

公开(公告)日：2023-12-07

申请号：US17804240

申请日：2022-05-26

申请人： Waymo LLC

发明人： Philip Ma ,  Filip Perich ,  Aravind Ramachandran

IPC分类号： G01S13/32 ,  G01S13/931 ,  G01S7/02

CPC分类号： G01S13/325 ,  G01S2013/93273 ,  G01S7/0234 ,  G01S13/931

摘要： Example embodiments relate to techniques for implementing radar waveform diversity. A technique may involve a radar unit transmitting radar signals into an environment of a vehicle based on a code sequence that indicates a ramp direction and a phase shift for each pulse in a pulse used by the radar unit and receiving radar reflections from the environment. In some instances, the radar unit may leverage antennas in a multiple input multiple output (MIMO) arrangement to further add diversity to transmissions according to spatial code in the code sequence. The technique can further involve using a demodulator to map the environment based on the radar reflections and controlling the vehicle based on the mapping. In some instances, the code sequence is received from a system that is wirelessly providing orthogonal code sequences to multiple emitters.

公开(公告)号：US11740345B2

公开(公告)日：2023-08-29

申请号：US16294764

申请日：2019-03-06

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Shankar Ram Narayana Moorthy ,  Karthik Subburaj ,  Anil KV Kumar

IPC分类号： G01S13/58 ,  G01S13/34 ,  G01S7/35 ,  G01S7/02

CPC分类号： G01S13/343 ,  G01S7/023 ,  G01S7/0234 ,  G01S7/0235 ,  G01S7/354 ,  G01S13/584 ,  G01S7/356

摘要： A method for a radar system includes transmitting, by a transmit channel of the radar system, a frame comprising first, second, and third chirps. Each chirp has a chirp start frequency, and the chirp start frequency of the transmitted chirps is dithered. The method also includes receiving, by a receive channel of the radar system, a frame of reflected chirps based on the transmitted frame, and generating a digital intermediate frequency (IF) signal.

公开(公告)号：US12055652B2

公开(公告)日：2024-08-06

申请号：US17371392

申请日：2021-07-09

申请人： Infineon Technologies AG

发明人： Heinrich Guenther Heiss

IPC分类号： G01S13/93 ,  G01S7/02 ,  G01S13/32 ,  G01S13/34 ,  G01S13/931

CPC分类号： G01S7/0234 ,  G01S13/325 ,  G01S13/343 ,  G01S13/931

摘要： In accordance with an embodiment, a radar device includes transmit circuitry configured to emit a radar signal including a plurality of frames each comprising a respective sequence of chirps. The transmit circuitry is further configured to wirelessly emit information about the radar signal to a surrounding environment. The information indicates at least one of a positioning of sequential chirps with respect to each other for at least one of the plurality of frames and a positioning of sequential frames with respect to each other in the radar signal.

公开(公告)号：US11906620B2

公开(公告)日：2024-02-20

申请号：US17395823

申请日：2021-08-06

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Monier Maher ,  Jean P. Bordes ,  Manju Hegde ,  Otto A. Schmid ,  Raghunath K. Rao ,  Marius Goldenberg ,  Aria Eshraghi ,  Vito Giannini ,  David S. Trager ,  Nikhilesh Bhagat ,  Srikanth Gollapudi ,  Sundar Govindarajan ,  Steve Borho ,  Jonathan Preussner ,  Paul W. Dent ,  Paul Bassett ,  Stephen W. Alland ,  Fred Harris ,  Wayne E. Stark ,  Murtaza Ali

IPC分类号： G01S13/931 ,  G01S7/02 ,  G01S13/87 ,  H04L27/227 ,  H04B17/309 ,  H04B17/345 ,  G01S7/35

CPC分类号： G01S13/931 ,  G01S7/023 ,  G01S7/0233 ,  G01S7/0234 ,  G01S13/87 ,  G01S13/878 ,  H04L27/2278 ,  G01S7/356 ,  G01S2013/9316 ,  G01S2013/9322 ,  G01S2013/93271 ,  G01S2013/93272 ,  H04B17/309 ,  H04B17/345 ,  H04B2201/71634

摘要： A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system includes transmitters configured to transmit radio signals, receivers configured to receive radar signals, and a control unit. The received radio signals include transmitted radio signals transmitted by the transmitters and reflected from objects in an environment. The control unit adaptively controls the transmitters and the receivers based on a selected operating mode for the radar system. The selected operating mode meets a desired operational objective defined by current environmental conditions. The control unit is configured to control the receivers to produce and process data according to the selected operating mode.

公开(公告)号：US11796669B2

公开(公告)日：2023-10-24

申请号：US17594600

申请日：2020-04-24

申请人： Aura Intelligent Systems, Inc.

发明人： Jungah Lee

IPC分类号： G01S13/87 ,  G01S7/02 ,  G01S13/32 ,  H04B7/0413 ,  H04B7/06 ,  G01S13/42 ,  G01S13/931

CPC分类号： G01S13/878 ,  G01S7/0234 ,  G01S13/325 ,  G01S13/426 ,  G01S13/931 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0682 ,  H04B7/0695 ,  G01S7/023

摘要： An advanced system and method is provided. The advanced system and method comprises: a set of antennas including a set of transmit antennas and a set of receive antennas; a digital beamformer; and a processor operably connected to the set of antennas and the digital beamformer, the processor configured to; identify a set of orthogonal multiple-input-multiple-output (MIMO) signals, generate a first set of beams via the digital beamformer, and map the set of orthogonal MIMO signals into each of the generated set of beams. The advanced system and method further comprises a transceiver operably connected to the processor, the transceiver configured to: transmit, to a target scene via the set of transmit antenna of the set of antennas, a first signal based on the first set of beams; and receive, via the set of receive antennas of the set of antennas, a second signal based on a second set of beams that is reflected or backscattered from the target scene.

公开(公告)号：US11733368B2

公开(公告)日：2023-08-22

申请号：US16477104

申请日：2017-11-16

申请人： Robert Bosch GmbH

发明人： Michael Schoor ,  Benedikt Loesch

IPC分类号： G01S13/58 ,  G01S7/02 ,  G01S7/35 ,  G01S13/931 ,  G01S13/34

CPC分类号： G01S13/583 ,  G01S7/023 ,  G01S7/0232 ,  G01S7/0234 ,  G01S7/354 ,  G01S7/356 ,  G01S13/343 ,  G01S13/931

摘要： An estimation is described of the speed of objects with the aid of a radar sensor that includes multiple transmitting antennas. Multiple nested sequences of frequency ramps are emitted with the aid of multiple transmitting antennas. An individual phase encoding takes place for each transmitting antenna with the aid of a harmonic code. For estimating the speed of the object, the ambiguities due to the code multiplex are resolved.

公开(公告)号：US11994609B2

公开(公告)日：2024-05-28

申请号：US16687550

申请日：2019-11-18

申请人： BDCM A2 LLC

发明人： Shoaib Shafi ,  Maha Achour

IPC分类号： G01S13/32 ,  G01S7/02 ,  G01S13/34 ,  G01S13/58 ,  G01S13/931

CPC分类号： G01S7/023 ,  G01S7/0234 ,  G01S13/325 ,  G01S13/34 ,  G01S13/584 ,  G01S13/931

摘要： Examples disclosed herein relate to a system of object detection, the system including a continuous modulation signal unit to generate a continuous modulation signal, a code generation unit to sample, quantize and encode the continuous modulation signal to generate an encoded signal, a transmit antenna to transmit the encoded signal, and a receive antenna to receive a reflection of the encoded signal and separate the reflection of the encoded signal from other signals.

公开(公告)号：US11933875B2

公开(公告)日：2024-03-19

申请号：US17202941

申请日：2021-03-16

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Takaaki Kishigami ,  Kenta Iwasa

IPC分类号： G01S13/28 ,  G01S7/02 ,  G01S7/282 ,  G01S7/288 ,  G01S13/931 ,  H04B7/0413

CPC分类号： G01S13/288 ,  G01S7/0234 ,  G01S7/282 ,  G01S7/2883 ,  G01S13/282 ,  G01S13/931 ,  H04B7/0413

摘要： The target detection accuracy of a radar apparatus is improved. The radar apparatus includes transmission circuitry, which, in operation, transmits a transmission signal using a plurality of transmit antennas, and reception circuitry, which, in operation, receives using a plurality of receive antennas a reflected wave signal that is the transmission signal reflected by an object, in which the plurality of transmit antennas include at least one first transmit antenna and a plurality of second transmit antennas, and, in a first direction, an absolute value of a difference between, on one hand, a spacing between the at least one first transmit antenna and a phase center of those of the plurality of second transmit antennas which are used for beam synthesis, and, on another hand, a spacing between adjacent receive antennas of the plurality of receive antennas is a defined value based on a wavelength of the plurality of transmission signals.

公开(公告)号：US11885901B2

公开(公告)日：2024-01-30

申请号：US16973144

申请日：2019-03-28

申请人： ASTYX GmbH

发明人： Stefan Trummer

IPC分类号： G01S7/00 ,  G01S7/02 ,  G01S13/42 ,  G01S13/931 ,  H01Q13/02 ,  H01Q21/06

CPC分类号： G01S7/006 ,  G01S7/023 ,  G01S7/026 ,  G01S7/0231 ,  G01S7/0234 ,  G01S13/42 ,  G01S13/931 ,  H01Q13/0241 ,  H01Q21/064 ,  G01S2013/9316

摘要： A polarimetric radar consisting of a transmission arrangement, in which the carrier signals have a circular polarization, wherein all the transmitters of the transmission arrangement are used simultaneously and each transmitter is operated by way of a transmission signal, which is modulated by way of an individual digital phase code, a receiver arrangement, which receives the reflected signals via an antenna arrangement, wherein there are both reception antennas that are configured for left-hand circularly polarized electromagnetic waves and reception antennas that are configured for right-hand circularly polarized electromagnetic waves, wherein the use of a plurality of transmitters and receivers provides an overall arrangement, which is operated in accordance with the multiple-input multiple-output method.

公开(公告)号：US11821981B2

公开(公告)日：2023-11-21

申请号：US18191101

申请日：2023-03-28

申请人： UHNDER, INC.

发明人： Curtis Davis ,  Monier Maher ,  Jean P. Bordes ,  Manju Hegde ,  Otto A. Schmid ,  Raghunath K. Rao ,  Marius Goldenberg ,  Aria Eshraghi ,  Vito Giannini ,  David S. Trager ,  Nikhilesh Bhagat ,  Srikanth Gollapudi ,  Sundar Govindarajan ,  Steve Borho ,  Jonathan Preussner ,  Paul W. Dent ,  Paul Bassett ,  Stephen W. Alland ,  Fred Harris ,  Wayne E. Stark ,  Murtaza Ali

IPC分类号： G01S13/931 ,  G01S7/02 ,  G01S13/32

CPC分类号： G01S13/931 ,  G01S7/023 ,  G01S7/0233 ,  G01S7/0234 ,  G01S13/32 ,  G01S2013/9316 ,  G01S2013/9322 ,  G01S2013/9323 ,  G01S2013/9324

摘要： A method for operating a radar sensing system includes configuring a transmitter to transmit a radio signal. A receiver is configured to receive radio signals. The received radio signals include the transmitted radio signal transmitted by the transmitter and reflected from objects in the environment. The method includes with advanced temporal knowledge of the codes used to modulate the transmitted radio signal, using code values of the plurality of codes, and in combination with a bank of digital finite impulse response (FIR) filters, generating complementary signals of any self-interference noise. The method further includes subtracting the complementary signals at one or more points in the receiver prior to the interference desensing the receiver. The radar sensing system further includes a frequency modulated continuous wave (FMCW) interference canceller for detecting the largest interference signals and sequentially cancelling them while signal processing the received radio signals.