舰船电子工程Issue(10)：162-165,4.DOI:10.3969/j.issn.1672-9730.2015.10.041
一种水下高速小目标的多普勒频率估计方法
Doppler Frequency Estimation Method of Underwater High-Speed Small Target
摘要
Abstract
Aiming at the problem of estimating doppler frequency of underwater high‐speed small target ,based on the principle of ESPRIT algorithm ,an improved ESPRIT algorithm is put forward .By the time delay data of target echo signal , two sub‐arrays with the same array shape are constructed .A matrix pencil is constructed by the cross covariance matrix of the two sub‐arrays .By means of generalized eigen‐decomposition of the matrix pencil ,the doppler frequency of underwater high‐speed small target can be obtained .Compared with standard ESPRIT algorithm ,the improved ESPRIT algorithm does not need to do eigen‐decomposition of auto‐covariance matrix ,thus has lower computational complexity .The simulation re‐sults show that the proposed method is effective for estimating doppler frequency of underwater high‐speed small target .关键词
高速小目标/主动探测/ESPRIT/特征分解/多普勒频率/估计算法Key words
high-speed small target/active detection/ESPRIT/eigen-decomposition/doppler frequency/estimation algorithm分类
信息技术与安全科学引用本文复制引用
孙常存,邢国强,曲兆宇..一种水下高速小目标的多普勒频率估计方法[J].舰船电子工程,2015,(10):162-165,4.
