›› 2012, Vol. 32 ›› Issue (1): 72-76.doi: 10.3780/j.issn.1000-758X.2012.01.011

• 技术交流 • 上一篇    下一篇

实际入射角的相位干涉仪测角方法

 纪强, 罗义军, 李劲, 田茂   

  1. (武汉大学电子信息学院,武汉430079)
  • 收稿日期:2011-06-12 修回日期:2012-02-25 出版日期:2012-02-25 发布日期:2012-02-25
  • 作者简介:纪 强 1969年生,1994年毕业于长春光机学院电子仪器与测量技术专业。现为武汉大学电子信息学院通信与信息系统专业博士研究生。主要研究方向为软件无线电和宽带数据接收。

Phase Interferometer Method for the Actual Angle measure

 JI  Qiang, LUO  Yi-Jun, LI  Jin, TIAN  Mao   

  1. (SchoolofElectronicInformation,WuhanUniversity,Wuhan430079)
  • Received:2011-06-12 Revised:2012-02-25 Online:2012-02-25 Published:2012-02-25

摘要: 为了提高短距离定位精度,消除采用平行入射假定所引入的计算误差,分析和研究了近似误差对角度估计和解相位模糊的影响;得出了满足平行入射近似的前提条件,为干涉仪的波长、基线长度等参数设计提供了指导依据;提出了实际入射角的相位差估计和相应的角度计算方法,提高了角度估计精度。文章提出的高精度相位干涉仪测角方法,适用于多个运动平台(如卫星、飞行器)的互相定位、航天器交会对接、地面短距离目标定位等测角精度要求高的工程应用。

关键词: 实际入射角, 相位干涉仪, 相位差估计, 交会对接

Abstract: To improve the positioning precision for short distance and to eliminate the calculation error caused by adopting the assumption of parallel incidence, the effects of approximate error on angle estimation and phase unwrapping ambiguity were analyzed. And the prerequisite for satisfying the approximation of parallel incidence was obtained. Furthermore, the method for the phase difference estimation of the actual incident angle and the relevant angle calculation was proposed, and the angle estimation precision could be improved. This angle detecting method with high precision by using phase interferometer is suitable for engineering applications with high requirement for precision, such as reciprocal positioning of multiple motion platforms, the rendezvous and docking for the spacecraft, short range object positioning on ground.

Key words: Actual incidence, Phase interferometer, Phase difference estimation, Rendezvous and docking