公开(公告)号：US11353580B2

公开(公告)日：2022-06-07

申请号：US16708194

申请日：2019-12-09

Applicant: THALES

Inventor： Yoan Veyrac ,  Jérémy Inconstante ,  Patrick Garrec ,  Richard Montigny ,  Pascal Cornic

IPC: G01S13/935 ,  B64C1/36 ,  B64C27/04 ,  B64D43/00 ,  G01S13/00 ,  G08G5/00 ,  H01Q3/34 ,  H01Q21/06 ,  H01Q25/00

Abstract: A proximity radar method for a rotary-wing aircraft includes a sequence of phases T(k) of steps. In a first phase T(1), the electronic computer of the radar system computes unambiguous synthetic patterns on the basis of a first activated interferometric pattern M(1) of N unitary radiating groups. In the following phases T(k) of steps, executed successively in increasing order of k, the electronic computer computes synthetic patterns on the basis of interferometric patterns M(k) of rank k, wherein the N unitary radiating groups of a series deviate simultaneously in terms of azimuth and in terms of elevation as k increases, and establishes maps of rank k of the surroundings in terms of azimuth distance/direction and/or elevation distance/direction cells wherein the detected obstacle ambiguities, associated with the network lobes, are removed by virtue of the map(s) provided in the preceding phase or phases.

公开(公告)号：US10585181B2

公开(公告)日：2020-03-10

申请号：US15539021

申请日：2015-12-22

Applicant: THALES

Inventor： Pascal Cornic ,  Jean Paul Artis ,  Christian Renard

IPC: G01S13/44 ,  G01S3/02 ,  G01S3/32 ,  G01S7/02 ,  H01Q9/27 ,  H01Q1/36

Abstract: This method involves, for an array of at least two antennas pointing in different directions and the respective radiation patterns of which overlap one another, each antenna including at least two radiating elements so as to be able to work in a first operating mode associated with a first radiation pattern (Δ) and according to a second operating mode associated with a second radiation pattern (Σ): acquiring, for each antenna, a first signal (SΔi) corresponding to the first operating mode and a second signal (SΣi) corresponding to the second operating mode; determining, for each antenna, an opening half-angle (ρi) of a cone of possible directions of incidence from the amplitude of the first and second signals; calculating the bearing angle (Θ0) and/or the elevation angle (φ0) of the direction of incidence by intersection of the cones of possible directions of incidence determined for each antenna.

公开(公告)号：US20150048965A1

公开(公告)日：2015-02-19

申请号：US14389508

申请日：2013-03-26

Applicant: THALES

Inventor： Pascal Cornic ,  Patrick Le Bihan ,  Stephane Kemkemain

IPC: G01S7/35 ,  G01S3/14 ,  G01S13/02

CPC classification number: G01S7/35 ,  G01S3/14 ,  G01S3/46 ,  G01S3/74 ,  G01S13/02 ,  G01S2013/0281

Abstract: An active and passive detection device is provided with a low probability of interception having a fixed antenna structure, transmission means and reception means. The antenna structure is formed by a plurality of radiating elements grouped into identical subnetworks and comprises at least one transmission subnetwork and at least three reception subnetworks. The transmission means are capable of generating an unfocused continuous waveform having low peak power in one plane and of transmitting said waveform. The reception means are capable of detecting the targets following the formation of a plurality of directional beams on the basis of the signals received on the reception subnetworks. The reception means are likewise capable of implementing the interception of radar signals from other radar sources using cross correlation processing between the signals received on at least three reception subnetworks.

Abstract translation: 主动和被动检测装置被提供具有固定天线结构，传输装置和接收装置的低拦截概率。 天线结构由分组成相同子网的多个辐射元件形成，并且包括至少一个传输子网和至少三个接收子网。 发送装置能够产生在一个平面中具有低峰值功率并且发送所述波形的未聚焦连续波形。 接收装置能够基于在接收子网上接收的信号来检测形成多个定向波束之后的目标。 接收装置同样能够使用在至少三个接收子网上接收的信号之间的互相关处理从其他雷达源截取雷达信号。