摘要
对SAR原始数据时域中的统计特性进行分析的基础上,对原始数据在频域中的特性进行了具体分析,分析的结果认为SAR原始数据在时域和频域中的特性相一致,从而提出了频域中采用块自适应量化编码的方法,文中对该方法进行了深入讨论,同时在文中还介绍了利用该方法对SAR原始数据进行压缩处理的实验结果,由实验结果可以看出,在频域中实现SAR原始数据的压缩同样也能得到良好的效果。
The time region characteristic and the frequency region characteristic of Synthetic Aperture Radar (SAR) raw data are analyzed. By the analysis result, the SAR raw data characteristic is coincident in the time region and in the frequency region. Based on the studying result, we put forward a kind of method of the frequency region block adaptive quantization coding for SAR raw data. We lucubrate the method and discuss the compression result of SAR raw data with the frequency coding method. Making use of the frequency coding method, we find the frequency region coding can get good result in SAR raw data compression as well as in time region coding.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2005年第12期2107-2111,共5页
Systems Engineering and Electronics
关键词
合成孔径雷达
频域
量化编码
synthetic aperture radar(SAR)
frequency region
quantization coding