An Improved Prewhitening Method for LFM Reverberation in Shallow Sea Using Frequency Focusing Transformation

摘要：

This paper presents an improved autoregressive (AR) prewhitening method for linear frequency modulation (LFM) reverberation in shallow sea to enhance the target signal. This method transforms the linear varying frequency in LFM reverberation to stationary frequency components using frequency focusing transformation, the local stationariN of reverberation is enhancecj, and the prewhitening performance of AR model is improved. Finally, experiments with real reverberation data verify that the proposed method improves the statistical detection probability of matched filter and GLRT detector by 6％ and 11％ respectively.

关键词： reverberation autoregressive model prewhitening frequencyfocusing signal detection

作者: Wang Ru-hang Huang Jian-guo Zhang Yu-jie

作者单位: College of Marine Engineering Northwestem Polytechnical University Xian 710072, China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 1262-1265

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）