Adaptive multi-target detection based on SMVF for HF radar

被引：0
|
作者：
Shi, Jie [1 ]
Gao, Huotao [1 ]
Zhou, Lin [1 ]
Zhang, Huajun [1 ]
机构：
[1] School of Electronic Information, Wuhan University, Wuhan,430072, China
来源：
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | 2014年 / 39卷 / 11期
关键词：
Goodness-of-fit test - HF radars - Instantaneous frequency estimation - Linear frequency - Multi-target detection - Multicomponents - Time frequency analysis - Time-frequency distributions;
D O I：
10.13203/j.whugis20130697
中图分类号：
学科分类号：
摘要：
Focusing on the difficulty in multi-target detection under conditions of strong sea-clutter, interference and noise, this paper proposes an algorithm for the instantaneous frequency (IF) estimation of multi-component linear frequency modulate (LFM) signals-SMVF (S-method viterbi fitting), which integrates advantages of the S-method time-frequency distribution and the viterbi algorithm. An adaptive multi-target detection scheme is proposed based on the performance of straight line fitting for the estimated IF. Data processing results demonstrate that accuracy of the proposed algorithm is increased by approximately 20% when compared with WDM and WDV under low SNR conditions, verifying the feasibility and effectiveness of the algorithm. ©, 2014, Research and Development Office of Wuhan University. All right reserved.
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页码：1304 / 1309
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