Frequency line tracking using HMM-based schemes

被引：29
|
作者：
Paris, S [1 ]
Jauffret, C [1 ]
机构：
[1] Univ Toulon & Var, Signal Informat & Syst Lab, F-83957 La Garde, France
来源：
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2003年 / 39卷 / 02期
关键词：
D O I：
10.1109/TAES.2003.1207256
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
This paper deals with fluctuating line tracking, present on the so-called lofargram encountered in any passive sonar system. Considering such a line as a random walk modeled by a first-order Markov chain, we have recourse to the hidden Markov models (HMMs) arsenal. More precisely, we propose to track a frequency line with Viterbi and Forward-Backward algorithms. The originality of this work comes from the fact that a "probabilistic integration of the spectral power" approach allows us to construct a signal-to-noise (SNR)-knowledge-free method. Intensive simulations reveal no loss of performance.
引用
收藏
页码：439 / 449
页数：11
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