空天防御2019，Vol.2Issue(1)：47-52,6.
低信噪比信号相位差检测算法优化设计与实现
The Design and Implementation of Algorithm to Optimize the Phase Difference Detection in Low SNR
曹奕涛 1淳莉 2张宏军 1赵洪峰 1周小川1
作者信息
- 1. 上海机电工程研究所, 上海 201109
- 2. 上海空间电源研究所, 上海 200245
- 折叠
摘要
Abstract
Three methods such as zero across and FFT and correlation analysis are introduced to measure phase difference for the test of missile automatic pilot.The virtual instrument based on LabView is used to realize the three methods.The advantage and disadvantage for these three methods are analyzed through simulation.The phase difference measurement by correlation analysis has the advantages of high precision and strong anti-jamming, so this paper emphasis on correlation analysis.Correlation analysis arithmetic is optimized and realized in low SNR.Through simulation, the ameliorated method of correlation can improve the test accuracy of phase difference efficiently.The algorithm has been applied to a missile automatic pilot testing system, the results has shown the validity of the algorithm.关键词
相位差/零点比较法/频域分析法/相关分析法/虚拟仪器Key words
phase difference/zero across/FFT/correlation analysis/virtual instrument分类
信息技术与安全科学引用本文复制引用
曹奕涛,淳莉,张宏军,赵洪峰,周小川..低信噪比信号相位差检测算法优化设计与实现[J].空天防御,2019,2(1):47-52,6.
