一种船舶雷达导航回波数据压缩算法的设计  

Design of a Compression Algorithm for Ship Navigation Radar Echo Data

作　　者：刘羽[1,2] 曾杰辉[1,2] 刘晓阳[1,2] 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林理工大学机械与控制工程学院,广西桂林541004

出　　处：《计算机测量与控制》2014年第8期2512-2514,2517,共4页Computer Measurement &Control

基　　金：广西教育厅科研项目(教育201102ZD018);广西教育厅研究生教育创新计划项目(YCSZ2012085)

摘　　要：为了解决船舶雷达导航系统存储空间小、原始回波数据量多和文件大等矛盾,根据船舶雷达数据的特点,设计了位图压缩—半字节压缩—双哈夫曼压缩的混合压缩算法;该算法以半字节压缩算法为核心,融合了位图压缩算法和哈夫曼压缩算法,单纯的半字节压缩算法理论上压缩比可达到50%,将位图压缩和哈夫曼压缩与其融合后,总压缩比可达76%以上;实验证明,新算法可以为船舶导航系统节省了大量的存储资源,并提高了数据传输的速率。In order to solve the conflict between the shortage of ship navigation radar system＇ s storage space and large raw echoes data and files, a mixed compression algorithm of the hitmap compression --half a byte compression -- Double Huffman compression is presented, according to the character of ship navigation radar＇ s data . On the base of half a byte compression algorithm, this algorithm combines the bitmap compression and the Huffman compression algorithm. In theory, the compression ratio of pure half a byte compression algorithm can run up to 50%, the total compression ratio can reach more than 76% when being combined with the bitmap compression and Huffman compression. It has been proved by the experiment that the new algorithm can save a large amount of storage resources for ship navigation system, and improve the rate of data transfer.

关 键 词：船舶雷达导航 半字节压缩 位图压缩 哈夫曼压缩 

分 类 号：U675.7[交通运输工程—船舶及航道工程]