基于相参脉冲序列的频率精测量  

High Precision Frequency Estimation of Coherent Pulse Signal

作　　者：熊波 冯兵 张蔚 XIONG Bo;FENG Bing;ZHANG Wei(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)

机构地区：[1]电子信息控制重点实验室

出　　处：《电子信息对抗技术》2019年第3期19-23,共5页Electronic Information Warfare Technology

摘　　要：提出了一种适用于相参脉冲串的频率估计算法。该方法通过利用多个脉冲之间的相参关系,计算每个脉冲与基准脉冲的相位差,保证更长的时间积累,从而有效地提高了脉冲信号的频率估计精度。为了评价算法的有效性和性能,通过模拟信号和实际信号对算法进行了仿真验证。实验结果表明该方法的测频精度可以达到克拉美-罗限。A new algortihm for frequency estimation of the coherent pulse signal is proposed. The algorithm uses the coherent property of the pulses, calculates the phase difference of each pulse with the reference pulse. It uses a longer accumlate time, and the precison is improved. In order to evaluate the performance of the algorithm, many experiments are done on simulated signals and practical signals. The simulation results show that the precision of the proposed algorithm approaches the Cramer Rao Low Bound.

关 键 词：相参脉冲串 频率估计 克拉美-罗限 

分 类 号：TN971.1[电子电信—信号与信息处理]