空间数据和信息传输系统.无损数据压缩

[中文适用范围]： 该国际标准建立了适用于数字数据的源编码数据压缩算法，并规定了如何将这些压缩数据插入源数据包中以进行检索和解码。 用于数据压缩的源编码是数据系统中使用的一种方法，用于减少数字数据量，以实现以下领域的好处，包括但不限于：a）减少传输信道带宽； b) 减少缓冲和存储要求； c) 在给定速率下减少数据传输时间。 [外文原描述]： ISO 15887:2013 establishes a source-coding data-compression algorithm applied to digital data and specifies how these compressed data shall be inserted into source packets for retrieval and decoding. Source coding for data compression is a method utilized in data systems to reduce the volume of digital data to achieve benefits in areas including, but not limited to: reduction of transmission channel bandwidth; reduction of the buffering and storage requirement; reduction of data-transmission time at a given rate. The characteristics of source codes are specified only to the extent necessary to ensure multi-mission support capabilities. ISO 15887:2013 does not attempt to quantify the relative bandwidth reduction, the merits of each approach discussed, or the design requirements for coders and associated decoders. Some performance information is included in CCSDS 120.0-G-2. ISO 15887:2013 addresses only Lossless source coding, which is applicable to a wide range of digital data, both imaging and non-imaging, where the requirement is for a moderate data-rate reduction constrained to allow no distortion to be added in the data compression/decompression process. The decompression process is not addressed.