嵌入式零树编码在天气雷达回波数据压缩中的应用

本文研究基于小波零树编码的天气雷达立体扫描数据压缩算法。根据雷达回波数据的特点，提出了一种有效的雷达数据预处理方案，然后利用Shapiro的嵌入式小波零树算法对预处理后的图像数据进行压缩实验。实验结果表明，该雷达回波数据压缩算法，在低比特率情况下，仍有很高的PSNR值和满意的主观效果。

WEATHER RADAR DATA COMPRESSION BASED ON ZEROTREE WAVELET ALGORITHM

In this paper,a novel compression algorithm for weather radar data based on zerotree coding is presented.Considering the dependence of radar data,an efficient pre-processing algorithm for the data is given first,and the redundancy of the data is efficiently reduced.Then the Shapiro's embedded zerotree wavelet algorithm is used to compress the pre-processed data.Experimental results show that for the weather radar data,the proposed algorithm achieves good PSNR even in very low bit rate.