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.
出处
《计算机测量与控制》
北大核心
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)
关键词
船舶雷达导航
半字节压缩
位图压缩
哈夫曼压缩
ship navigation radar
half a byte compression
bitmap compression
Huffman compression
