Multi scale feature based matched filter processing |
| |
作者姓名: | LIJun HOUChaohuan |
| |
作者单位: | InstituteofAcoustics,TheChineseAcademyofSciencesBeijing100080 |
| |
基金项目: | This work was supported by the National Natural Science Foundation of China (60272087). |
| |
摘 要: | Using the extreme difference of self-similarity and kurtosis at large level scale of wavelet transform approximation between the PTFM (Pulse Trains of Frequency Modulated) signals and its reverberation, a feature-based matched filter method using the classify-before-detect paragriam is proposed to improve the detection performance in reverberation and multipath environments. Processing the data of lake-trails showed that the processing gain of the proposed method is bigger than that of matched filter about 10 dB. In multipath environments, detection performance of matched filter become badly poorer, while that of the proposed method is improved better. It shows that the method is much more robust with the effect of multipath.
|
关 键 词: | 多尺度特征 匹配滤波器 PTFM 脉冲最优化 密度函数 |
本文献已被 CNKI 维普 等数据库收录! |