公开(公告)号：WO2022056371A1

公开(公告)日：2022-03-17

申请号：PCT/US2021/050051

申请日：2021-09-13

Applicant: AVIATION COMMUNICATION & SURVEILLANCE SYSTEMS, LLC

Inventor： SMITH, Mark Dean ,  STAYTON, Gregory T.

IPC: G01S13/78 ,  G01S7/28 ,  G01S13/76 ,  G01S13/933

Abstract: An adaptive interrogation method is provided, the method including determining application of an adaptive whisper shout interrogation sequence. The determination may be predictive and based on an anticipation of garbled replies or may be reactive and based on a plurality of replies to an initial ATCRBS interrogation, there being interference between the replies such that the replies are unable to be properly decoded. The adaptive whisper shout interrogation sequence includes adapting a subsequent ATCRBS interrogation. The adaptation may be a change in an amplitude difference between an interrogation pulse and a suppression pulse of the subsequent ATCRBS interrogation (i.e. a bin width), as compared to the initial ATCRBS interrogation; or the adaptation may be a change in a power of the subsequent ATCRBS interrogation as compared to the initial ATCRBS interrogation. The subsequent ATCRBS interrogation is then transmitted, and one or more replies are received.

公开(公告)号：WO2021180879A1

公开(公告)日：2021-09-16

申请号：PCT/EP2021/056246

申请日：2021-03-11

Applicant: UNIVERSITEIT GENT ,  IMEC VZW

Inventor： YUSUF, Marwan ,  TANGHE, Emmeric ,  JOSEPH, Wout ,  MARTENS, Luc

IPC: G01S7/02 ,  G01S7/28 ,  G01S13/02 ,  G01S13/04 ,  G01S13/88

Abstract: Example embodiments describe a method for estimating a number of persons present in a room (100) comprising i) obtaining measurements (131) of electromagnetic sounding signals (141-146) transmitted within the room; ii) determining at least one reverberation time from the measurements; iii) determining the number of people in the room based on the at least one reverberation time, on a room parameter indicative for a capacity of the room for absorbing the signals and a person parameter indicative for an average capacity of a person (101) for absorbing the signals.

公开(公告)号：WO2021170133A1

公开(公告)日：2021-09-02

申请号：PCT/CN2021/078409

申请日：2021-03-01

Applicant: 加特兰微电子科技（上海）有限公司

Inventor： 张小龙

IPC: G01S13/58 ,  G01S7/28

Abstract: 一种提升目标探测精度的方法、计算机设备、存储介质、集成电路、无线电器件及电子设备，涉及雷达信号处理技术领域。该提升目标探测精度的方法包括：基于接收到的回波信号，获取速度模糊倍数和目标物峰值数据（301）；基于该速度模糊倍数对目标物峰值进行补偿（302）；并基于补偿后的目标物峰值数获取目标物数据，将其作为真实目标物数据（303）。该方法获得的真实目标物数据相较于传统方式获取的目标物数据更加精准，尤其是针对目标物速度过大的场景，更能有效的提升目标探测的精度。

公开(公告)号：WO2021124256A1

公开(公告)日：2021-06-24

申请号：PCT/IB2020/062195

申请日：2020-12-18

Applicant: LEONARDO S.P.A.

Inventor： APRILE, Angelo ,  ISELLA, Giorgio ,  TROYSI, Eleonora

IPC: H01Q21/06 ,  H01Q21/28 ,  H01Q25/00 ,  G01S7/28 ,  H01Q21/22 ,  H01Q3/26 ,  G01S13/426 ,  G01S7/03 ,  H01Q21/061 ,  H01Q25/002 ,  H01Q3/2617

Abstract: A Multi-Beam on Receive Electronically Steerable Antenna (1) comprising a Tx array (2, 6) comprising a phased array of Tx antenna elements (3, 7) and having a geometric aperture with one or more pairs of parallel opposite sides; and an Rx array (2, 4) comprising a phased array of Rx antenna elements (3, 5) and having a geometric aperture with one or more pairs of parallel opposite sides. One or more pairs of parallel opposite sides of the geometric aperture of the Tx array (2, 6) are inclined relative to one or more pairs of parallel opposite sides of the geometric aperture of the Rx array (2, 4).

公开(公告)号：WO2021057966A1

公开(公告)日：2021-04-01

申请号：PCT/CN2020/118082

申请日：2020-09-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： WATSON, Paul Robert ,  TONG, Wen

IPC: G01S7/28

Abstract: An antenna system is described. A main antenna may be configured to receive a first signal, and a first auxiliary antenna may be configured to receive a second signal from a first expected interference direction. An adjustment unit receives the second signal and is configured to adjust the second signal. A combiner unit receives the first signal and the adjusted second signal and is configured to combine the adjusted second signal with the first signal to reduce any contribution of the second signal to the first signal.

公开(公告)号：WO2021008977A1

公开(公告)日：2021-01-21

申请号：PCT/EP2020/069293

申请日：2020-07-08

Applicant: THALES

Inventor： GREVERIE, Wilfried ,  MARCY, Jean-Pierre ,  MOULINET, Ronan

IPC: H01Q3/26 ,  H01Q21/22 ,  H01Q21/29 ,  G01S7/28

Abstract: L'invention porte sur une antenne réseau comprenant une pluralité de panneaux rayonnants mécaniquement disjoints (300-1, 300-N) disposés côte à côte, des moyens d'application (351-1, 35M-1, 351 -N, 35M-N) d'une mise en forme aux signaux transmis par les éléments rayonnants des panneaux, et un dispositif (361) de gestion de la mise en forme des signaux, dans laquelle les coefficients de mise en forme correspondant à une somme entre au moins : un coefficient de mise en forme ( W co ) permettant d'orienter le gain maximum de l'antenne dans une direction donnée, et au moins l'opposé d'un coefficient de mise en forme ( W c ) permettant d'orienter le gain maximum de l'antenne dans la direction d'un lobe secondaire résultant d'écarts entre les panneaux rayonnants de l'antenne réseau. L'invention porte également sur le procédé d'émission/réception associé.

公开(公告)号：WO2019209792A1

公开(公告)日：2019-10-31

申请号：PCT/US2019/028657

申请日：2019-04-23

Applicant: QUALCOMM INCORPORATED

Inventor： NIESEN, Urs ,  UNNIKRISHNAN, Jayakrishnan

IPC: G01S13/42 ,  G01S13/72 ,  G01S13/93 ,  H01Q3/26 ,  G01S7/28

Abstract: The present disclosure provides methods and systems for radar detection. A radar device may obtain prior information about known targets including an azimuth angle of each known target. The radar device may generate an association aware transmit beam pattern toward at least a subset of the known targets based on the prior information. The radar device may detect targets from reflected beams of the association aware transmit beam pattern. Generating the association aware transmit beam pattern may include generating a partial ambiguity graph for the known targets, the graph including at least one edge connecting two known targets wherein a difficulty of disambiguating the two known targets is greater than a threshold. The graph also includes at least two known targets that are not connected by an edge.

公开(公告)号：WO2019093979A1

公开(公告)日：2019-05-16

申请号：PCT/TR2017/050555

申请日：2017-11-08

Applicant: ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI

Inventor： BAKTIR, Can ,  OZPAK, Ezgi ,  SOBACI, Engin

IPC: G01S7/02 ,  G01S13/89 ,  G01S7/28

CPC classification number: G01S13/89 ,  G01S13/426

Abstract: With the present invention, there is provided an image generation method for displaying images to users according to the data received from at least one radar. Said method comprises the steps of forming a plurality of scan regions by dividing a region that is to be scanned by the radar into azimuth and range lines such that each of the scan regions remains between at least two azimuth lines and two range lines; dividing each scan region into at least two sub-regions; receiving scanning data related to each scan region from said radar; determining the number of sensing point (3) in each sub-region according to the received scanning data; establishing a threshold value for each scan region according to the numbers of the sensing point (3) that form the scan region; for each sub-region, comparing the number of sensing point (3) in the corresponding sub-region with the threshold value of the scan region where the sub-region is located; if the number of sensing point (3) in a sub-region is higher than the threshold value of the scan region where the sub-region is located, then determining that the sensing points (3) in the concerned sub-region belong to a target (4); displaying to a user on a screen the sensing points (3) which are determined to belong to the target (4); if the number of sensing points (3) in a sub-region is lower than the threshold value of the scan region where the sub- region is located, then determining that the sensing points (3) in the concerned sub-region are caused by a clutter; if a new scanning data with respect to each scan region is received from the radar, repeating the steps of establishing a threshold value, comparing the number of sensing point (3) in the sub-region with the threshold value, determining that the sensing points (3) in the sub-region belongs to a target (4) and displaying to a user on a screen the sensing points (3) which are determined to belong to the target (4), and determining that the sensing points (3) in the sub-region are caused by a clutter.

公开(公告)号：WO2018165479A1

公开(公告)日：2018-09-13

申请号：PCT/US2018/021618

申请日：2018-03-08

Applicant: PLANET LABS INC.

Inventor： RUBEL, Michael ,  LEVIT, Creon ,  FERRARO, Matthew

IPC: G01S7/00 ,  G01S7/28 ,  G01S13/00 ,  G01S13/28 ,  G01S13/90

Abstract: Synthetic aperture radar (SAR) imaging systems that transmit repeated waveforms based upon pseudonoise sequences to generate SAR imaging data in accordance with various embodiments of the invention are disclosed. A synthetic aperture radar in accordance with one embodiment of the invention includes: a transmitter configured to transmit superchirps, where the superchirp is generated by convolving a kernel with a pseudonoise modulated impulse sequence having a flat power spectrum; a receiver configured to receive backscatters of transmitted superchirps and digitize the received backscatters; and signal processing circuitry configured to perform matched filtering on digitized backscatters.

公开(公告)号：WO2017107096A1

公开(公告)日：2017-06-29

申请号：PCT/CN2015/098428

申请日：2015-12-23

Applicant: 华为技术有限公司

Inventor： 马霓 ,  李岳衡 ,  谷炜 ,  薛团结 ,  赵建平

IPC: G01S7/28

CPC classification number: G01S7/28

Abstract: 本申请提供了天线系统及信号传输方法。所述天线系统包括：包括发射端天线阵列及发射端匹配网络，其中，所述发射端匹配网络的S参数矩阵与所述发射端天线阵列的S参数矩阵相匹配，用于对待发射信号进行预畸变处理；所述发射端天线阵列用于发送经过所述发射端匹配网络预畸变处理后的所述待发射信号。本申请所提供的天线系统及信号传输方法，可以利用与匹配网络对需要由所述天线阵列发送的信号进行预畸变处理或对所述天线阵列接收到的信号进行解畸变处理，配置各个天线阵元耦合到邻近天线阵元的能量，从而降低天线阵元之间的耦合效应。