基于互相关的高精度多普勒频率变化率测量方法  

The Accurate Measurement Algorithm of Doppler Frequency Rate Using Cross-Correlation

作　　者：何晓明[1] 吴琳[1] 

机构地区：[1]中国电子科技集团公司第51研究所,上海201802

出　　处：《中国电子科学研究院学报》2014年第3期277-280,共4页Journal of China Academy of Electronics and Information Technology

基　　金：国家十二五重点预研项目

摘　　要：提出了一种脉组间多普勒频率变化率的高精度测量算法,该算法利用脉组相邻脉冲对间的互相关函数估计脉组模糊频率,在连续脉组间选择任一相同模糊频率进行解模糊得到各脉组相对频率,因为这些相对频率包含相同的模糊,所以可以利用差分或滤波算法得到脉组间多普勒频率变化率;计算机仿真和试验均证明了该测量算法的有效性。An accurate measurement algorithm of Doppler frequency rate between the clusters of pulses is given, which uses cross-correlating function between the succeeding pulse in the cluster to estimate ambiguous frequency of the cluster, and selects the same ambiguous frequency between the succeeding cluster of pulses to solve ambiguity to acquire the relative frequencies. Due to these relative frequencies include the same ambiguity, the filter algorithm can be used to estimate the Doppler frequency rate between the clusters of pulses. The effectiveness of the algorithm is demonstrated by the computer simulation and test.

关 键 词：脉组 互相关 解模糊 多普勒频率变化率 

分 类 号：TN95[电子电信—信号与信息处理]