公开(公告)号：US20140369256A1

公开(公告)日：2014-12-18

申请号：US14366834

申请日：2012-12-21

Applicant: ASTRIUM SAS

Inventor： Jean-Marc Aymes ,  Raphaêl Sanchez ,  Frédéric Voulouzan

IPC: H04B7/185 ,  H04B17/00

CPC classification number: H04B7/18519 ,  G01S5/021 ,  H04B7/08 ,  H04B17/21 ,  H04B17/27 ,  H04B17/309

Abstract: A method and system for estimating a path-length difference between two paths followed by a target signal transmitted by a spacecraft or aircraft to a first receiving antenna and a second receiving antenna of a receiving base, respectively. A useful-phase difference is measured between signals that correspond to the target signal received by the first receiving antenna and second receiving antenna. The path-length difference is estimated in accordance with the useful-phase difference measurements. The measurement of the useful-phase difference comprises either correlating the signals received by the first receiving antenna and second receiving antenna, respectively, with a reference target signal, or analyzing the signals received by the first receiving antenna and second receiving antenna, respectively, using an FFT or a PLL.

Abstract translation: 一种方法和系统，用于分别估计由航天器或飞机发送到接收基座的第一接收天线和第二接收天线的目标信号之后的两个路径之间的路径长度差。 在对应于由第一接收天线和第二接收天线接收的目标信号的信号之间测量有用相位差。 根据有用相位差测量值来估计路径长度差。 有用相位差的测量包括分别将由第一接收天线和第二接收天线接收的信号与参考目标信号相关联，或分别使用由第一接收天线和第二接收天线接收的信号分别使用 FFT或PLL。