摘要
雷达信号处理在整个雷达系统中一直都起着举足轻重的作用,同时也是雷达技术发展中最为活跃的部分。文章主要探讨小波变换在雷达视频压缩中的应用。针对雷达回波信号这些特点,提出了一种基于小波的自适应阈值方法进行雷达回波信号去噪处理,在保留雷达回波的前提下,降低了雷达数字视频的信息量,为雷达数字视频数据的编码打下了良好的基础。而在雷达图像处理中,嵌入式零树小波算法对雷达图像进行压缩取得了不错的效果。利用所提出的信号去噪方法对雷达视频数据进行预处理后在实时性传输方面具有很高的应用价值和前景。
The application of wavelet transform in radar video data compressing is mainly discussed in this paper.This paper proposed an adaptive threshold method.The main idea of this method is to use the sub of adjacent threshold coefficient which is less than a parameter to determine the threshold value.The simulation results show that the self-adaptive threshold method mentioned in the paper can get satisfactory result for radar echo signal de-noising and the coding method of EZW can also get good results.The threshold method decreases the information of radar video and gets a good foundation for radar signal coding when we consider the radar echo as a precondition.The research on radar video data processing in this thesis is of significant application value and is prospective in signal actual time transmitting.
出处
《舰船电子工程》
2011年第3期59-63,共5页
Ship Electronic Engineering
关键词
小波变换
雷达
信号处理
图像压缩
wavelet transform
radar
signal processing
image compression
