一种基于卡尔曼滤波的相关干涉仪改进算法  

An Improved Algorithm of Correlation Interferometer Based on Kalman Filter

作　　者：李瑞霖 赵文鹏 张书哲 迟宗涛[1] LI Ruilin;ZHAO Wenpeng;ZHANG Shuzhe;CHI Zongtao(The College of Electronic Information,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电子信息学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2022年第2期14-19,共6页Journal of Qingdao University(Engineering & Technology Edition)

摘　　要：针对相关干涉仪算法在户外建库时因受到环境白噪声和同频多径干扰导致测量精度低的问题,本文提出了一种基于卡尔曼滤波的相位模板库处理方法。通过分析相关干涉仪理论和卡尔曼滤波理论,证明了相关干涉仪相位模板库建立过程是卡尔曼滤波的典型使用场景,给出了基于卡尔曼滤波的相位模板库的处理方法及具体流程。同时,对白噪声干扰和同频多径干扰两种场景下的卡尔曼滤波,采用Matlab进行了算法仿真。仿真结果表明,基于卡尔曼滤波的相位模板库处理方法,可以对多径干扰下的相位模板库进行优化,达到相关干涉仪的使用标准,证明了该方法的有效性。该研究具有广泛的应用前景。Aiming at the problem of low measurement accuracy caused by environmental white noise and co-frequency multipath interference when the correlation interferometer algorithm is building a library outdoors,this paper proposes a phase template library processing method based on Kalman filtering.By analyzing the theory of the correlation interferometer and the Kalman filter theory,it is proved that the process of establishing the phase template library of the correlation interferometer is a typical use scenario of the Kalman filter,and the processing method and specific process of the phase template library based on the Kalman filter are given.Aiming at the Kalman filtering in the two scenarios of white noise interference and co-frequency multipath interference,the algorithm simulation is carried out using Matlab.The simulation results prove the effectiveness of the phase template library processing method based on Kalman filter.The research has a wide range of application scenarios.

关 键 词：卡尔曼滤波 相关干涉仪 相位模板库 白噪声 多径噪声 

分 类 号：TN99[电子电信—信号与信息处理] TP751.1[电子电信—信息与通信工程]