GPS 数据的纯数字化协同压缩算法

摘要

To reduce the amount of data transmission and maximizely maintain the integrity of the original data , we compress the GPS positioning data for real-time transmission .The paper processes the data into a pure numerical sequence by lossless prepro-cessing, which is based on the features of GPS positioning data .The paper introduces Golomb-Rice algorithm and presents a col-laborative compression algorithm idea .The experiment shows that the half byte coding collaborated with real-time binary arithme-tic is the best .The collaborative algorithm meets the real-time transmission of GPS data , and ensures the compression rate at least 85%, decreasing the GPS data transmission , reducing the traffic cost .It also can adapt to a variety of types of GPS data compres-sion.Meanwhile, it can be used in any countries around the world without the use limitation .%对需实时传输的GPS（ Global Position System ）定位数据进行数据压缩，降低其数据传输量并最大限度地保留原GPS数据的完整性。依据GPS定位数据特性对其进行纯数字化无损预处理，引入Golomb-Rice算法并提出算法协同压缩思想。实验表明半字节编码与实时二进制算术编码协同压缩GPS数据最佳，该协同算法不仅满足GPS数据传输实时性，而且其压缩率在85％以上。本算法减少了GPS数据传输量，降低了流量成本；能适应多种类型的GPS定位数据压缩；无区域使用局限性，能够在全球任意国家中使用。