Invention Grant
US09065530B2 Calibration method and system for estimating a path difference of a target signal transmitted by a spacecraft or aircraft
有权
用于估计由航天器或飞机发射的目标信号的路径差的校准方法和系统
- Patent Title: Calibration method and system for estimating a path difference of a target signal transmitted by a spacecraft or aircraft
- Patent Title (中): 用于估计由航天器或飞机发射的目标信号的路径差的校准方法和系统
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Application No.: US14366633Application Date: 2012-12-21
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Publication No.: US09065530B2Publication Date: 2015-06-23
- Inventor: Jean-Marc Aymes , Raphael Sanchez , Frederic Voulouzan
- Applicant: ASTRIUM SAS
- Applicant Address: FR Les Mureaux
- Assignee: AIRBUS DEFENCE AND SPACE SAS
- Current Assignee: AIRBUS DEFENCE AND SPACE SAS
- Current Assignee Address: FR Les Mureaux
- Agency: Im IP Law PLLC
- Agent C. Andrew Im
- Priority: FR1104013 20111222
- International Application: PCT/EP2012/076683 WO 20121221
- International Announcement: WO2013/093021 WO 20130627
- Main IPC: H04B7/10
- IPC: H04B7/10 ; H04L1/02 ; H04B7/185 ; H04B17/21 ; H04B17/27 ; H04B17/309 ; H04B7/08
Abstract:
A method and system for estimating a path 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 corresponding to the target signal received on the first receiving antenna and second receiving antenna. The path difference is estimated on the basis of the measurements of the useful-phase difference. A calibration signal is transmitted to the receiving base and a calibration phase difference between signals corresponding to the calibration signal received on the first receiving antenna and second receiving antenna is measured. Variations are compensated in the measurements of the calibration-phase difference relative to the measurements of the useful-phase difference.
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