Computationally efficient time delay and Doppler estimation for LFM signal

被引：0
|
作者：
Yoon, KS [1 ]
Park, DH [1 ]
Lee, CM [1 ]
Lee, KK [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Elect & Elect Engn, Kyungpook, South Korea
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2004年 / E87B卷 / 02期
关键词：
fast maximum likelihood; time delay and Doppler estimation; active sonar;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A computationally efficient time delay and Doppler estimation algorithm is proposed for active sonar with a Linear Frequency Modulated (LFM) signal. To reduce the computational burden of the conventional estimation algorithm, an algebraic equation is used which represents the relationship between the time delay and the Doppler in the cross-ambiguity function (CAF) of the LFM signal. The algebraic equation is derived based on the Fast Maximum Likelihood (FML) algorithm. The use of this algebraic relation enables the time delay and Doppler to be estimated with two 1-D searches instead of the conventional 2-D search.
引用
收藏
页码：335 / 341
页数：7
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