公开(公告)号：US20180045819A1

公开(公告)日：2018-02-15

申请号：US15649356

申请日：2017-07-13

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick LE BIHAN ,  Jean-Michel QUELLEC

IPC: G01S13/34 ,  G01S13/60 ,  G01S13/93 ,  G01S13/50 ,  G01S13/36 ,  G01S13/28

CPC classification number: G01S13/34 ,  G01S13/28 ,  G01S13/343 ,  G01S13/36 ,  G01S13/505 ,  G01S13/605 ,  G01S13/93 ,  G01S13/931

Abstract: A detection method implementing an FMCW waveform is provided, the emitted waveform is formed of a recurring pattern of given period Tr covering an emission frequency band of given width B, each pattern being divided into a given number P of sub-patterns of duration Tr/P covering an excursion frequency band ΔF=B/P, the sub-patterns being mutually spaced by a frequency interval equal to ΔF. The radar performs: a first distance-compression processing operation carrying out a low-resolution distance compression at the scale of each recurring pattern on a fraction B/P of the emission band of width B corresponding to the frequency band covered by each of the sub-patterns; a Doppler processing operation on a given number N of successive recurrences so as to form P ambiguous distance-Doppler maps of low distance resolution, the maps being segmented into various speed domains; a second distance-compression processing operation of resolution that differs depending on the speed domain to which the relative speed of the target with respect to the radar belongs.

公开(公告)号：US20180284263A1

公开(公告)日：2018-10-04

申请号：US15933252

申请日：2018-03-22

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick GARREC ,  Patrick LE BIHAN

IPC: G01S13/91 ,  G01S13/58

CPC classification number: G01S13/913 ,  G01S13/58 ,  G01S13/87 ,  G01S13/9064 ,  G05D1/0669 ,  G05D1/0676

Abstract: A method comprises at least: a first radar processing for locating and estimating the trajectory of a target on the basis of measurements of radial distances, of Doppler frequency and of angle of azimuth and of elevation of the target arising from a radar signal emitted towards the target; a second radar processing of location and of trajectory of the target along a vertical axis, by applying the principle of the inverse synthetic antenna; the disparity between the given trajectory and the trajectory estimated by the first processing, projected on a horizontal plane, and the disparity between the given trajectory and the trajectory estimated by the second processing according to the vertical axis being used to control the direction of displacement of the target.

公开(公告)号：US20160259048A1

公开(公告)日：2016-09-08

申请号：US15034371

申请日：2014-11-07

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick LE BIHAN ,  Yves AUDIC

IPC: G01S13/93 ,  G01S13/90

CPC classification number: G01S13/931 ,  G01S13/343 ,  G01S13/90 ,  G01S13/9047 ,  G01S2013/9335

Abstract: A radar attached laterally to airplane fuselage to detect obstacles on a collision course with a portion of the airplane facing the radar, comprises an emission antennal channel and reception antennal channels in the same plane, the form of the wave and field of angular coverage of the radar depending on the velocity of the airplane, the processing means comprising the steps: Establishing in the radar coordinate system a first distance/Doppler map allowing echoes to be separated into distance and Doppler resolution cells in a reception antennal channels; Establishing a second distance/Doppler map of smaller size by selecting a subset of distance/Doppler resolution cells corresponding to the possible positions of targets liable to collide with the wing of the airplane; Establishing new distance/Doppler maps by forming beams computationally from the subsets of distance resolution cells retained for each reception antennal channel; and Temporal integration, in each beam, of successive distance/Doppler maps.

Abstract translation: 在飞机机身侧面附近的雷达，用于检测与飞机面对雷达的部分碰撞过程中的障碍物，包括在同一平面内的发射天线通道和接收天线通道，波形和角度覆盖场的形式 雷达取决于飞机的速度，处理装置包括以下步骤：在雷达坐标系中建立允许回波被分离成接收天线通道中的距离和多普勒分辨率单元的第一距离/多普勒图; 通过选择对应于可能与飞机机翼碰撞的目标的可能位置的距离/多普勒分辨率单元的子集来建立较小尺寸的第二距离/多普勒图; 通过从为每个接收天线通道保留的距离分辨率单元的子集计算地形成光束来建立新的距离/多普勒图; 和每个波束中的时间积分，连续的距离/多普勒图。

公开(公告)号：US20160131754A1

公开(公告)日：2016-05-12

申请号：US14904405

申请日：2014-07-15

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick LE BIHAN ,  Régis LEVAUFRE

IPC: G01S13/44 ,  G01S3/74

CPC classification number: G01S13/4454 ,  G01S3/74

Abstract: A device for detecting electromagnetic signals comprising an array receive antenna having N radiating elements and M receive channels downstream of the receive antenna, M less than N, the pointing directions of the antenna, equal to the radiating elements, obtained by adaptive beamforming and regularly spaced apart, comprises: switching the M receive channels onto the radiating elements in successive sequence cycles, M radiating elements connected to the receive channels with each sequence, the same radiating element, being the reference element, connected to the receive channels for all sequences, one cycle completed when all radiating elements are connected to one of the receive channels; for each sequence, estimating two-by-two spatial correlations of the signal received on the reference channel and the signals received on the other M-1 receive channels, then estimating the spatial power spectral density in N incoming directions based on a coherent sum of N correlation terms obtained.

Abstract translation: 一种用于检测电磁信号的装置，包括具有N个辐射元件的阵列接收天线和在接收天线下游的M个接收信道，M小于N，天线的指向方向等于通过自适应波束成形获得的辐射元件，并且规则间隔 包括：以连续的顺序循环将M个接收信道切换到辐射元件上，将与每个序列连接到接收信道的M个辐射元件相同，相同的辐射元件作为参考元件，连接到所有序列的接收信道，一个 当所有辐射元件连接到接收通道之一时，循环完成; 对于每个序列，估计在参考信道上接收的信号和在另一个M-1个接收信道上接收的信号的二乘二空间相关性，然后基于相干和的相干和，估计N个入方向中的空间功率谱密度 获得N个相关项。

公开(公告)号：US20170336450A1

公开(公告)日：2017-11-23

申请号：US15524226

申请日：2015-09-24

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick LE BIHAN ,  Joël FILLATRE

IPC: G01R23/167 ,  G01R23/163

CPC classification number: G01R23/167 ,  G01R23/163 ,  G01S7/021

Abstract: A digital receiver comprising at least two reception pathways, the method carries out a digital inter-correlation of the signals obtained as output from at least two filters of different central frequencies and different ranks, the rank and the central frequency of the filters being chosen as a function of a determined frequency-wise search domain. For a determined search domain, the various sampling frequencies of the reception pathways are chosen so that the ambiguous frequencies resulting from the spectral aliasings vary as a monotonic function of the true frequency of the signals.