摘要
雷达信号的数据量非常庞大,如果不压缩进行存储或传输,会占用很大资源。文中介绍了雷达信号的特点,对常用的雷达数据压缩方法进行了分类,给出了评价指标。介绍了雷达有损压缩中较为典型的游程、单触发单元、离散余弦变换、小波分析等压缩算法,阐述了各算法的流程和关键技术,并结合评价指标进行了比较,提出了建议的压缩方法。文中将压缩流程扩展为去噪声和压缩2个部分,充分肯定了去噪在雷达数据压缩中的作用,得出了一些有意义的结论。
The radar signal has very large volume of data. If not compressed for storage or transmission, the resource is used tremendous. This paper summarizes the characteristics of the radar data, categories the common radar data compression methods, and gives the evaluation indicators. The flow and key technology of several compression algorithms which are RLE, single trigger unit, DCT and wavelet analysis for lossy compression are introduced. Combined with evaluation indicators, the various algorithms are compared , and a recommended compression method is proposed. The compression flow is further divided into de-noising and compression, and the importance of de-noising in radar data compression is emphasized. Some useful conclusions are drawn.
出处
《电子工程师》
2008年第6期9-11,共3页
Electronic Engineer
关键词
雷达
有损压缩
视频编码
小波变换
radar
lossy compression
video coding
wavelet transform
