GNSS 轨道钟差产品综合综述

doi:10.16507/j.issn.1006-6055.2023.04.002

世界科技研究与发展 ›› 2023, Vol. 45 ›› Issue (3): 306-316.doi: 10.16507/j.issn.1006-6055.2023.04.002

所属专题：卫星导航

GNSS 轨道钟差产品综合综述

朱红玉1,2 陈俊平1,2 张益泽1

1. 中国科学院上海天文台，上海 200030；2. 中国科学院大学天文与空间科学学院，北京 100049

出版日期:2023-06-25 发布日期:2023-07-07

Review of GNSS Orbits and Clocks Products Combination

ZHU Hongyu1,2 CHEN Junping1,2 ZHANG Yize1

1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China; 2. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China

Online:2023-06-25 Published:2023-07-07

摘要/Abstract

摘要：

全球导航卫星系统（GNSS）精密轨道钟差产品是实现高精度精密单点定位（PPP）的前提，也是高精度GNSS应用的基础。综合GNSS轨道钟差能够有效提高产品的精度和稳定度，因此开展GNSS 轨道钟差产品综合方法研究，实现稳定可靠的轨道与钟差组合产品服务，具有重要研究意义和应用价值。本文首先介绍了GNSS星座与IGS服务中心概况，梳理出轨道钟差综合的函数模型及构建综合模型中的关键问题，在现有的动力学法和加权平均法两种综合方法的基础上系统地介绍加权平均综合法的整体流程以及加权平均的定权方式；归纳了GNSS轨道钟差产品多系统、事后、实时综合技术的进展，对综合产品精度及定位结果进行分析，并根据分析结果评估各综合方法；最后，介绍现有实时轨道钟差综合产品的现状尤其是精度，讨论GNSS实时轨道钟差综合目前存在的不足与面临的挑战，并展望了已有产品综合研究对GNSS 实时轨道钟差综合和实时精密单点定位带来的机遇。

关键词: 轨道综合, 钟差综合, 多卫星导航系统, 精密单点定位

Abstract:

GNSS(Global Navigation Satellite System) precision orbits and clocks product is the premise of realizing high-precision PPP(Precise Point Position) and the basis of high-precision GNSS application. Therefore, it is of great research significance and application value to develop a combination method of GNSS orbits and clocks product and realize a stable and reliable orbit and clock combined product service. This paper introduces the general situation of the GNSS constellation and IGS(International GNSS Service) service center, combs the functional model of orbit clock combination synthesis, comprehensively analyzes and discusses the progress of GNSS orbit clock combination product synthesis technology, and looks forward to the opportunities brought by existing research on GNSS real-time orbit clock combination synthesis and real-time precise single point positioning.

Key words: Orbit Combination, Clock Combination, Multi-navigation Satellite System, Precise Point Positioning

朱红玉陈俊平张益泽. GNSS 轨道钟差产品综合综述[J]. 世界科技研究与发展, 2023, 45(3): 306-316.

ZHU Hongyu CHEN Junping ZHANG Yize. Review of GNSS Orbits and Clocks Products Combination[J]. WORLD SCI-TECH R&D, 2023, 45(3): 306-316.

GNSS 轨道钟差产品综合综述

Review of GNSS Orbits and Clocks Products Combination

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