公开(公告)号：US10484029B2

公开(公告)日：2019-11-19

申请号：US16222998

申请日：2018-12-17

Applicant: THALES

Inventor： Nicolas Martin ,  Jean-Michel Perre ,  Nicolas Bastien

IPC: H04B1/10 ,  G01S19/21 ,  G01S19/37

Abstract: A receiver of signals likely to be disturbed by an interfering signal, the receiver includes an interference rejection filter comprising a multiplying gain applied respectively to an in-phase channel and an in-quadrature channel of a signal received by the receiver, the value of the multiplying gain being determined by a nonlinear function Ki(ρ) of the modulus ρ of the received signal, the function Ki(ρ) being determined so as to maximize the signal-to-noise ratio after application of the multiplying gain and demodulation of the received signal.

公开(公告)号：US20140292575A1

公开(公告)日：2014-10-02

申请号：US14226019

申请日：2014-03-26

Applicant: THALES

Inventor： Nicolas Martin ,  Jean-Michel Perre ,  Vincent Chopard

IPC: G01S19/21

CPC classification number: G01S19/21 ,  G01S19/53

Abstract: Method for formation of a signals array from a receiver (20) of signals from a satellite navigation system in order to improve the resistance to scrambling or interference, the receiver (20) being equipped with an antenna (21) having several controlled reception pattern sensors, comprising a step consisting in determining the attitude of the antenna in a TGL reference frame centred on the receiver, by iterative determination of the attitude angles of the antenna yielding the maximum of the sum of the energies of the weighted sums of the signals received by the sensors at the output of the correlators of the processing channel respectively associated with the satellites, the weighting coefficients of the weighted sums being calculated from the attitude angles considered at each iteration and from the known positions of the satellites in the TGL reference frame.

Abstract translation: 用于从卫星导航系统的信号的接收器（20）形成信号阵列的方法，以便改善抵抗加扰或干扰的能力，所述接收机（20）配备有具有多个受控接收模式传感器的天线（21） ，包括以下步骤：通过迭代确定天线的姿态角，得到所接收的信号的加权和的总和的最大值的最大值，以确定天线在以接收机为中心的TGL参考帧中的姿态 分别与卫星相关联的处理通道的相关器的输出处的传感器，根据在每次迭代中考虑的姿态角度和TGL参考帧中的卫星的已知位置计算加权和的加权系数。

公开(公告)号：US20140292576A1

公开(公告)日：2014-10-02

申请号：US14226049

申请日：2014-03-26

Applicant: THALES

Inventor： Nicolas Martin ,  Jean-Michel Perre ,  Vincent Chopard

IPC: G01S19/21

CPC classification number: G01S19/215

Abstract: Method for detecting signals intended as a decoy for a receiver of signals from a satellite navigation system, the receiver being equipped with an antenna using controlled reception pattern sensors, comprising the following steps consisting in, for each satellite: calculating (1) the position of the satellite in a first TGL reference frame centred on the receiver based on the position of the receiver and on the position of the satellite; determining (2) the attitude of the antenna in the first reference frame; calculating (3) first elevation and azimuthal angles of the satellite in a second reference frame linked to the antenna, starting from the position of the satellite in the first reference frame and from the attitude of the antenna in the first reference frame; determining (4) second elevation and azimuthal angles of the satellite in the second reference frame, by iterative search for a maximum of a weighted complex sum of the demodulated signals received by the antenna; calculating (5) the value of a likelihood function between the first elevation and azimuthal angles of the satellite and the second elevation and azimuthal angles of the satellite; and detecting (6) a risk of receiving decoy signals when the said value of the likelihood function is lower than a threshold.

Abstract translation: 用于检测作为来自卫星导航系统的信号接收机的诱饵的信号的方法，所述接收机配备有使用受控接收模式传感器的天线，包括以下步骤：对于每个卫星，计算（1） 基于接收机的位置和卫星的位置的第一个TGL参考帧中的卫星; 确定（2）天线在第一参考帧中的姿态; 从第一参考帧中的卫星的位置和第一参考帧中天线的姿态开始，计算（3）连接到天线的第二参考帧中的卫星的第一高程和方位角; 通过迭代搜索由天线接收的解调信号的加权复数的最大值来确定第二参考帧中卫星的第二高程和方位角; 计算（5）卫星的第一高程和方位角之间似然函数的值和卫星的第二高程和方位角; 以及当所述似然函数的所述值低于阈值时，检测（6）接收诱饵信号的风险。