刘笃学,贺凯飞,丁志鹏,杨金权

• 1:中国石油大学(华东)海洋与空间信息学院

摘要(Abstract)：

针对基于BDS-SMC的远海高精度动态定位中存在的数据中断或通讯延迟现象，从稳定性与精度两方面对GPS、GLONASS、Galileo与BDS-3的钟差改正数进行质量评估，并分析其数据结构特征。结果表明，在中断区间较短且IOD不变的情况下，由于钟差改正数的数量级保持在纳秒级，钟差改正数的预报误差低于钟差数据，故钟差改正数预报可有效应对该现象。针对BDS-SMC通讯成本高昂的问题，本文提出利用钟差改正数预报进行数据压缩，仅利用BDS-SMC传输模型参数可显著降低数据量。以原始数据序列与一次差分序列为训练样本，选取结构简单、参数较少的3种模型进行预报效果的评估。结果表明，由于预报区间较短，差分序列预报模型的误差累积效应不明显，预报精度高于原始序列预报模型。

关键词(KeyWords)： BDS-SMC;数据质量评估;预报效果评估;数据压缩

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(42174021,42074028);; 山东省自然科学基金资助项目(ZR2021MD060,ZR2020MD042,ZR2019MD005);; 青岛海洋科学与技术国家实验室开放基金项目(QNLM2016ORP0401)

作者(Author): 刘笃学,贺凯飞,丁志鹏,杨金权

DOI: 10.16251/j.cnki.1009-2307.2022.09.011

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