Study on a Hybrid Algorithm of Navigation Radar Echo Data Compression
Yu Liu, Jie Zeng, Xiao Yang Liu · Applied Mechanics and Materials · 2014
With the conflict between storage space of the ship navigation radar system and large raw echoes data and files, a mixed compression algorithm of the bitmap compression + half-byte compression + Double Huffman compression is presented which is based on the characteristics of the text type data. On the basis of the original half-byte compression algorithm, the method combined with the bitmap compression and Huffman improved compression algorithm. If just using the half a byte compression algorithm, the compression ratio can only be 50%; while using the hybrid compression, the total compression ratio can be up to 75%, which save a large amount of storage resources for ship navigation system, and improve the rate of data transmission at the same time.