一种地理栅格数据自适应压缩传输方法  

An Adaptive Compression and Transmission Method for Geographic Grid Data

作　　者：嵇亮亮[1] 王伟[1] 王传明 JI Liangliang;WANG Wei;WANG Chuanming(The 28th Research Institute of China Electronics Technology Group Corporation,Nanjing 210007,China)

机构地区：[1]中国电子科技集团公司第二十八研究所,江苏南京210007

出　　处：《电子质量》2023年第2期59-62,共4页Electronics Quality

摘　　要：为了便于地理栅格数据的共享应用,通常会采用跨语言的JSON对栅格数据进行压缩传输。现有的JSON数据压缩传输算法主要是对JSON数据中重复的Key或者Value进行处理,或者通过转义、数据字典匹配等方式来达到数据压缩目的,其在对大块栅格数据流进行压缩传输时,效果并不明显。因此,针对栅格数据的特点,设计了一种自适应的压缩传输方法,从而降低了传输的JSON数据量,提高了传输效率,具有较好的实用价值。In order to facilitate the sharing and application of geographic grid data,the JSON is designed to compress and transmit the grid data.The existing JSON data compression transmission algorithm mainly achieves the purpose of data compression by processing repeated Key or value in JSON data or by escaping,data dictionary matching.However,the effect is not obvious when the data stream of large grid is compressed and transmitted.Therefore,according to the feature of grid data,an adaptive compression transmission method is designed,which reduces the amount of JSON data transmitted and improves the transmission efficiency.

关 键 词：地理栅格 JSON 数据压缩 BASE64 栅格字典 自适应 

分 类 号：P21[天文地球—测绘科学与技术]