基于循环互相关的LFM信号时延估计及性能分析  

Time-delay Estimator of LFM Signal and Its Performance Analysis Based on Cyclic Cross-correlation

作　　者：史建锋[1] 王可人[2] 

机构地区：[1]北京军代局,北京100042 [2]解放军电子工程学院,合肥230037

出　　处：《现代雷达》2007年第4期53-56,共4页Modern Radar

摘　　要：研究了复线性调频信号的循环互相关估计时延问题。利用信号循环平稳特性,分析了存在时延条件下的复线性调频信号的循环统计特性,同时提出了基于循环互相关包络的时延估计算法,然后分析了其估计性能,推导了循环互相关包络时延估计后的输出信噪比表达式。最后采用计算机仿真得到了估计性能的曲线,仿真实验验证了文中的结论。The time-delay estimator of complex LFM based on cyclic cross-correlation amplitude is discussed. The cyclic statistics of complex LFM is analyzed, and the time-delay estimator based on the cyclic cross-correlation amplitude is constructed. Then, the estimator performance is analyzed and output SNR of the estimator is deduced. Finally, the character of the estimator is given through computer simulation, which is in agreement with the analytic results.

关 键 词：循环互相关 线性调频 时延 估计 

分 类 号：TN957.51[电子电信—信号与信息处理]