相位差矢量平均的干涉仪解模糊方法  

Ambiguity-resolving method of interferometer based on phase difference with vector average

作　　者：韩月涛[1] 吴嗣亮[1] 马琳[1] 杨帆[1] 

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《电子测量与仪器学报》2011年第10期842-849,共8页Journal of Electronic Measurement and Instrumentation

摘　　要：针对多基线相位干涉仪逐次递推解模糊测角算法中存在的问题,研究通道间相位误差较大条件下干涉仪正确解模糊的方法。提出了一种基于1倍相位差测量值矢量平均的干涉仪解模糊方法,与直接使用1倍相位差测量值的常规干涉仪解模糊测角方法不同,该方法利用多次测量的无模糊1倍相位差测量值来构造相位矢量,对其进行矢量平均处理,提高1倍相位差的估计精度,降低通道间相位噪声的影响,从而达到即使在较高的通道相位噪声条件下也能够正确解模糊。计算机仿真结果及微波暗室测试结果验证了该算法的有效性。For the problem of successive recursive ambiguity-resolving in multi-baseline phase interferometer,the methods of correctly solving ambiguity under noisy circumstance is studied.This paper presents a new algorithm of solving ambiguity based on the vector average filtering of measured 1-times phase-difference values.Unlike the traditional solving-ambiguity methods of interferometer that directly using 1-times phase-difference values,This method firstly uses the measured 1-times phase-difference values to construct the complex vectors,then performs the vector average calculation of these vectors,This method can improve the precision of 1-times phase-difference estimation and reduce the influence of phase noise between channels,Thus can correctly ambiguity-resolving even in higher phase noise conditions.The computer simulation and Microwave darkroom testing results demonstrate the merits of new algorithm.

关 键 词：相位干涉仪 解模糊 矢量均值滤波 跳周现象 

分 类 号：TN973[电子电信—信号与信息处理]