摘要
由于舰船雷达信号目标环境的复杂性 ,从强杂波中检测目标异常困难 .基于小波变换下奇异信号和随机噪声在多尺度空间中不同的模极大值传播特性 ,设计了一种实用的小波消噪方法 .对舰船雷达回波信号实验检测结果表明 ,该方法能较好地改善信噪比增益 ,同时又能保持对突变信号的良好分辨率 .
When the object environment of ship radar signal is complex, detecting object is very difficult. In this paper, a novel method for restrain noise is presented based on the fact that the maximum absolute value of singular signal and random noise is different in multiscale domain under wavelet transform. Experimental results show that the method can improve signal and noise ratio greatly. At the same time, it has better resolution for singular signal.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
2000年第3期371-374,共4页
Journal of Dalian University of Technology
基金
中国船舶总公司基金资助课题!( 97J43 .2 .2 )
