BDS-3钟差改正数实时预报方法

doi:10.13474/j.cnki.11-2246.2023.0015

测绘通报 ›› 2023, Vol. 0 ›› Issue (1): 88-94.doi: 10.13474/j.cnki.11-2246.2023.0015

BDS-3钟差改正数实时预报方法

刘笃学¹, 贺凯飞^1,2, 杨金权¹, 徐向¹, 李家兴¹

1. 中国石油大学(华东)海洋与空间信息学院, 山东青岛 266580;
2. 自然资源部海上丝路海洋资源环境组网观测技术创新中心, 山东青岛 266580

收稿日期:2022-02-21 发布日期:2023-02-08
通讯作者: 贺凯飞。E-mail:kfhe@upc.edu.cn
作者简介:刘笃学(1996-),男,硕士生,主要研究方向为GNSS远海精密定位。E-mail:mimosa310929@163.com
基金资助:
国家自然科学基金(42174021);山东省自然科学基金(ZR2021MD060)

Real-time prediction of BDS-3 clock correction

LIU Duxue¹, HE Kaifei^1,2, YANG Jinquan¹, XU Xiang¹, LI Jiaxing¹

1. College of Oceanography and Space Informatics, China University of Petroleum(East China), Qingdao 266580, China;
2. Technology Innovation Center for Maritime Silk Road Marine Resources and Environment Networked Observation, Ministry of Natural Resources, Qingdao 266580, China

Received:2022-02-21 Published:2023-02-08

摘要/Abstract

摘要： 在远海精密动态定位研究中,BDS-3卫星钟差改正信息的质量对定位结果具有直接影响。在传输实时改正信息时,为了同时兼顾效率及成本,岸基用户端通常会将实时信息压缩后传输至远海用户端。针对数据压缩问题,本文提出了利用钟差改正数预报模型进行数据压缩,同时分析钟差改正数的结构特征,并将其分解为总体趋势序列与随机波动序列,分别构建预报模型。结果表明,DSC模型在20min的预报区间内较DLP模型提升了6%,较DLP模型提升了9%。

关键词: BDS-3改正信息, 质量评估, 数据结构特征, 钟差改正数预报, 数据压缩

Abstract: In the study of offshore precise dynamic positioning, the quality of BDS-3 correction information has a direct impact on the positioning results. This paper evaluates the quality of BDS-3 correction from the aspects of stability and accuracy. If BDS/GNSS fusion positioning mode is adopted, the communication cost of BDS-SMC is significantly higher. To solve this problem, this study proposes to use the clock correction prediction model for data compression, and analyze the structural characteristics of the clock correction, which is decomposed into the overall trend series and random fluctuation series, and then builds the prediction model respectively. The results show that DSC model is 6% higher than DLP model and 9% higher than DLP model in the 20 min prediction interval.

Key words: BDS-3 correction information, quality assessment, data structure characteristics, clock correction prediction, data compression

中图分类号:

P228

刘笃学, 贺凯飞, 杨金权, 徐向, 李家兴. BDS-3钟差改正数实时预报方法[J]. 测绘通报, 2023, 0(1): 88-94.

LIU Duxue, HE Kaifei, YANG Jinquan, XU Xiang, LI Jiaxing. Real-time prediction of BDS-3 clock correction[J]. Bulletin of Surveying and Mapping, 2023, 0(1): 88-94.

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BDS-3钟差改正数实时预报方法

Real-time prediction of BDS-3 clock correction

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