舰船电子工程Issue(10)：151-155,5.DOI:10.3969/j.issn.1672-9730.2015.10.039
一种水下体目标回波信号的高精度频率估计方法
A High Precision Frequency Estimation Method for Echo Signal of Underwater Body Target
摘要
Abstract
Aiming at that body target effect of target echo has an impact on the estimated Doppler frequency precision of echo signal in work area of torpedo acoustic‐fuze ,the Rife‐Segmented Phase Difference Method is proposed .The high esti‐mation precision of echo signal's Doppler frequency is achieved by the method through combining the traditional Rife algo‐rithm and the Segmented Phase Difference algorithm .It significantly improves the overall performance of the algorithm ,fully retains the advantages of the two algorithms and overcomes the respective defects by the estimated signal frequency is prepro‐cessed and different estimation algorithms are used in different frequency .Simulation result shows it can well extract Doppler frequency information of target echo in work area of the torpedo acoustic‐fuze to achieve precise prediction of burst spot with high estimation precision and good stability ,which has certain engineering application value .关键词
水下体目标/频率估计/Rife算法/分段相位差算法Key words
underwater target/frequency estimation/Rife algorithm/segmented phase difference algorithm分类
军事科技引用本文复制引用
刘演龙,石钊铭..一种水下体目标回波信号的高精度频率估计方法[J].舰船电子工程,2015,(10):151-155,5.
