Feature Extraction of Underwater Target Based on the Time-Frequency Analysis
Target feature extraction is a prerequisite for the target recognition. This paper mainly researched on extracting the features of underwater targets based on the time-frequency analysis. The method of timefrequency analysis-S transform was introduced and applied in underwater signal processing. The singlefrequency signal. pulse signal and two kinds of shipradiated noises collected by hydrophone were processed by S transform. According to the timefrequency distribution, the phase information and the instantaneous-frequency estimation of signals were studied. Then singular value based on S transform was proposed as another feature of ships. The results proved that the features of underwater targets can be extracted effectively by S transform.
time-frequency analysis S transform singular values ship-radiated noises
Zhang Guo-jun Wang Pan-pan Wang peng
National Key Laboratory for Electronic Measurement Technology North University of China Taiyuan, Shanxi, China
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
1889-1892
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）