现代电子技术Issue(14)：140-142,3.
连线干涉测量宽带信号处理方法改进与验证
Improvement and validation of broadband signal processing method in connecting-line interferometry
摘要
Abstract
To improve the estimated accuracy of time⁃delay difference when two measurement stationsin connecting⁃line in⁃terferometry receives a same signal,a new processing idea to utilize broadband transmission signal is proposed. FX correlation processing algorithm is used to derive the group delay recieved by cross power spectrum of two channel broadband transmission signals to solve the phase period ambiguity of carrier’s phase delay,and then calculate the more accurate time⁃delay by carrier phase delay. For broadband transmission signal modulated by BPSK,two channel signals’carrier frequency and phase are esti⁃mated respectively after a square transformation of the signal,then carrier phase delay is obtained. Monte Carlo simulation result proves validity and effectiveness of the method. Under the condition of certain signal to noise ratio,the method can improve the estimation accuracy of time delay difference which signal reaches to two stations.关键词
连线干涉测量/载波提取/频率相位估计/相位延迟/解模糊Key words
Connecting-line Interferometry/carrier extraction/frequency and phase estimation/phase delay/ambiguity reso-lution分类
信息技术与安全科学引用本文复制引用
..连线干涉测量宽带信号处理方法改进与验证[J].现代电子技术,2013,(14):140-142,3.
