基于EZW的雷达数据压缩算法  

EZW-based radar data compression algorithm

作　　者：胡泽龙 杨峰[1] 乔旭[1] Hu Zelong;Yang Feng;Qiao Xu(School of Mechanical Electronic and Information Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《计算机时代》2023年第2期28-32,共5页Computer Era

摘　　要：矿井三维雷达由于其数据量通道数巨大,数据直接传输和存储需要大量的网络带宽和存储空间。为了适应探地雷达数据并增加压缩率和计算速度,提出了改进方案。首先根据三维探地雷达数据的特性减少计算维度,提高了运算速度,其次省略了传统EZW码流的冗余信息,最后针对码流存在编码效率低的问题,引入三个辅助编码结合霍夫曼编码。实践仿真测试实验表明,此改进的算法能够在雷达数据上稳定运行,其速度和压缩率有所提升。Due to the huge number of data channels in the mine 3D radar, the direct data transmission and storage requires a large amount of network bandwidth and storage space. In order to adapt the GPR data and increase the compression rate and calculation speed, an improved scheme is proposed. Firstly, according to the characteristics of 3D GPR data, the calculation dimension is reduced to increase the calculation speed. Secondly, the redundancy of the traditional EZW code stream is omitted.Finally, in view of the problem of low coding efficiency in the code stream, three auxiliary codes combined with Huffman coding are introduced. Practical simulation test experiments show that the improved algorithm can run stably on radar data, and its speed and compression rate are improved.

关 键 词：探地雷达 EZW 霍夫曼编码 小波变换 

分 类 号：TP3-05[自动化与计算机技术—计算机科学与技术]