公开(公告)号：US12019149B2

公开(公告)日：2024-06-25

申请号：US17095558

申请日：2020-11-11

Applicant: Google LLC

Inventor： Patrick M. Amihood ,  Abhijit Shah ,  Jaime Lien ,  Hakim Kader Bhai Raja

IPC: G01S13/88 ,  G01S7/02 ,  G01S7/40 ,  G01S7/41 ,  G01S13/04 ,  G01S13/18 ,  G01S13/56 ,  G01S13/58 ,  H04W52/02

CPC classification number: G01S13/88 ,  G01S7/021 ,  G01S7/4008 ,  G01S13/04 ,  G01S13/18 ,  G01S13/582 ,  H04W52/0219 ,  G01S7/4013 ,  G01S7/411 ,  G01S7/415 ,  G01S13/56

Abstract: Techniques and apparatuses are described that enable low-power radar. The described techniques enable a radar system to reduce overall power consumption, thereby facilitating incorporation and utilization of the radar system within power-limited devices. Power consumption is reduced through customization of the transmission or processing of radar signals within the radar system. During transmission, different duty cycles, transmit powers, or framing structures can be utilized to collect appropriate data based on detected activity in an external environment. During processing, different hardware or different radar pipelines can be utilized to appropriately analyze the radar data. Instead of disabling the radar system, the described techniques enable the radar system to continuously monitor a dynamic environment and maintain responsiveness while conserving power.

公开(公告)号：US20240159864A1

公开(公告)日：2024-05-16

申请号：US18462858

申请日：2023-09-07

Applicant: NXP B.V.

Inventor： Prasanna Kumar Sethuraman

IPC: G01S7/292 ,  G01S7/03 ,  G01S13/02 ,  G01S13/58

CPC classification number: G01S7/2923 ,  G01S7/038 ,  G01S13/0209 ,  G01S13/582

Abstract: It is described a method of evaluating radar measurement data, the method comprising: forming plural subsequent channel impulse response profiles (14) from radar signals (6) across subsets of plural subsequent sample time intervals (15), the radar signals (6) being received due to reflection and/or interaction of plural UWB radar radiation pulses (3) transmitted towards a target (4); identifying, in each of the plural channel impulse response profiles (14), one of the plural sample time intervals (15) as a target sample time interval (16) in which received radar signals (6) are comprised originating due to reflection from the target (4); evaluating plural total radar signals of interest (17), each defined as respective magnitude and phase of the plural channel impulse response profiles (14) at the target sample time interval (16), in order to determine for at least one total radar signal of interest a phase (Φ) of a target contribution (21) to the total radar signal of interest (17); determining location and/or movement information of the target (4) based at least on the at least one phase (Φ) of the target contribution (21).

公开(公告)号：US20240019538A1

公开(公告)日：2024-01-18

申请号：US18218564

申请日：2023-07-05

Applicant: AGENCY FOR DEFENSE DEVELOPMENT

Inventor： Ji Hwan YOON ,  Yong Min KIM ,  Won Jin LEE ,  Jieun ROH

IPC: G01S7/292 ,  G01S7/41 ,  G01S13/58

CPC classification number: G01S7/2921 ,  G01S7/414 ,  G01S13/582

Abstract: The present disclosure relates to a radar system including a pulse Doppler radar. A method of removing clutter according to the present disclosure includes obtaining chirp rate information on a chirp rate applied to a transmission signal of the pulse Doppler radar, determining a reference Doppler frequency for removing a clutter signal by considering the chirp rate information, and removing a signal having a frequency less than or equal to the reference Doppler frequency.

公开(公告)号：US11867794B2

公开(公告)日：2024-01-09

申请号：US16973624

申请日：2019-07-05

Applicant: University of Maine System Board of Trustees

Inventor： Nuri W. Emanetoglu ,  Herbert Aumann

IPC: G01S13/56 ,  A01K47/06 ,  G01S7/40 ,  G01S13/58 ,  G01S13/88 ,  G01S13/00

CPC classification number: G01S13/56 ,  A01K47/06 ,  G01S7/40 ,  G01S13/582 ,  G01S13/88

Abstract: An apparatus for detecting and recording insect flying activities, such as outside a bee hive, with a Doppler radar is described. Also described is a system including a plurality of apparatuses for detecting and recording insect flying activities, such as outside a bee hive, with a Doppler radar.

公开(公告)号：US20230375693A1

公开(公告)日：2023-11-23

申请号：US17978821

申请日：2022-11-01

Applicant: Anduril Industries, Inc.

Inventor： Sam El-Akkad ,  Christopher Fischer ,  Travis Whitaker ,  Bryden Pearson ,  Todd Berk ,  Thao Pham ,  Jon Hsu ,  Cameron Dart

IPC: G01S13/60 ,  G01S13/58 ,  G01S13/88

CPC classification number: G01S13/60 ,  G01S13/582 ,  G01S13/88

Abstract: A modular, radio frequency (“RF”) system includes one or more directional antennas and is configured with both hardware and software components to enable the RF system to monitor (e.g., detect or track signals or objects) and/or interact with (e.g., track signals or objects, or transmit signals) objects in particular directions. The RF system includes one or more machine learning models to determine, based on received signals, one or more signals to transmit.

公开(公告)号：US20230324532A1

公开(公告)日：2023-10-12

申请号：US18025600

申请日：2021-09-07

Applicant: AIRBUS DEFENCE AND SPACE SAS

Inventor： Nicolas JEANNIN ,  Frédéric VOULOUZAN ,  Philippe BERTHEUX

IPC: G01S13/00 ,  G01S13/91 ,  G01S13/58

CPC classification number: G01S13/003 ,  G01S13/91 ,  G01S13/582 ,  G01S2013/0245

Abstract: A transmitter device of a bi-static or multi-static radar system is disclosed and implemented for aerial surveillance. The transmitter device is intended to be on board a satellite orbiting the Earth. Once in orbit, the transmitter device is configured to obtain information relating to a region of interest monitored by at least one receiver device of the radar system, and to transmit a signal in a radio beam illuminating at least one portion of the region of interest.

公开(公告)号：US20230204753A1

公开(公告)日：2023-06-29

申请号：US18086676

申请日：2022-12-22

Applicant: MMRFIC Technology Pvt. Ltd.

Inventor： Ganesan Thiagarajan ,  Saravanakumar Ganeshan ,  Sanjeev Gurugopinath

IPC: G01S13/58 ,  G01S7/00 ,  G01S7/282 ,  H04L5/00

CPC classification number: G01S13/582 ,  G01S7/006 ,  G01S7/282 ,  H04L5/0048

Abstract: A method of generating a reference signal for transmission over a wireless communication channel comprises generating a first signal of a first characteristic, generating a second signal with second characteristic, scaling the second signal at least in time and an amplitude to form a scaled signal and iteratively adding the scaled signal to the first signal to generate the reference signal. The iteratively adding comprises time indexing the first signal with plurality of time points, adding the scaled signal to first signal at each time point in the plurality of time points, computing a cost function to determine the cost of adding the scaled signal at each time point in the plurality of time points, selecting a set of time points that indicate reduction in the cost when the scaled signal is added and adjusting the amplitude of the scaled signal at each time point in the set of time points to reduce the cost.

公开(公告)号：US20230168358A1

公开(公告)日：2023-06-01

申请号：US18159671

申请日：2023-01-25

Applicant: Aptiv Technologies Limited

Inventor： Dariusz Cieslar ,  Mateusz Stachnik ,  Krzysztof Kogut

IPC: G01S13/42 ,  G01S13/931 ,  B60W40/114 ,  G01S13/58

CPC classification number: G01S13/42 ,  G01S13/931 ,  B60W40/114 ,  G01S13/582 ,  G01S13/584 ,  B60W2520/14 ,  G01S13/589 ,  G01S7/295

Abstract: This disclosure describes a radar system configured to estimate a yaw-rate and an over-the-ground (OTG) velocity of extended targets in real-time based on raw radar detections. This disclosure further describes techniques for determining instantaneous values of lateral velocity, longitudinal velocity, and yaw rate of points of a rigid body in a radar field-of-view (FOV) of the radar system.

公开(公告)号：US20230144558A1

公开(公告)日：2023-05-11

申请号：US17916851

申请日：2021-03-21

Applicant: ISRAEL AEROSPACE INDUSTRIES LTD.

Inventor： Joseph Hasson ,  Galya Goldner

IPC: G01S13/44 ,  G01S13/00 ,  G01S13/58 ,  H01Q3/36

CPC classification number: G01S13/4418 ,  G01S13/003 ,  G01S13/4463 ,  G01S13/582 ,  G01S13/4454 ,  H01Q3/36 ,  G01S2013/0245

Abstract: Distributed radar systems and techniques for processing data received from such distributed radar systems. The distributed radar systems may utilize data on beam spatial pattern for processing collected signals and determining direction of one or more reflection origins (e.g., one or more objects reflecting transmitted signal).

公开(公告)号：US20190086531A1

公开(公告)日：2019-03-21

申请号：US15711591

申请日：2017-09-21

Applicant: Hach Company

Inventor： David L. Rick

IPC: G01S13/58 ,  H04B1/69 ,  G01S13/10

CPC classification number: G01S13/582 ,  G01F23/284 ,  G01F23/2962 ,  G01S7/354 ,  G01S7/4911 ,  G01S7/4913 ,  G01S7/536 ,  G01S13/10 ,  G01S13/34 ,  G01S13/583 ,  G01S13/88 ,  G01S15/32 ,  G01S15/586 ,  G01S15/88 ,  G01S17/32 ,  G01S17/58 ,  G01S17/88 ,  G01S2007/356 ,  H04B1/69 ,  H04B2001/6912

Abstract: A method for constructing a frequency profile of an emitted signal suitable for use in a non-contact ranging system with multi-scale spectral analysis includes determining N stepped frequency chirps, wherein each frequency chirp of the N stepped frequency chirps has a linear FM modulation of predetermined bandwidth and slope, and wherein a starting frequency for each of the plurality of stepped frequency chirps is chosen so that a non-linear step profile is created which extends over a predetermined total bandwidth, sorting the plurality of N stepped frequency chirps into P sub-sequences, where P is equal to the product of decimation factors to be used in the multi-scale spectral analysis, and ordering the P sub-sequences end to end in time.