jianjie

中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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GPS监测电离层活动的方法和最新进展

王小亚^1,2 朱文耀¹
(1. 中国科学院上海天文台上海 200030)
(2. 香港理工大学土地测量与地理资讯学系香港)

摘要

全球定位系统(GPS)可以快速、准确地提供电离层总电子含量(TEC)信息。简要介绍了GPS技术精确测量TEC、监测电离层的原理和方法，指出进行TEC绝对量估计时求解差分群延迟(DCB)的重要性，以及建立多层和实时电离层监测模型的必要性。分析了影响TEC估计的主要误差源，着重介绍了目前GPS监测电离层的最新成果和进展。

Methods and Progress on Monitoring Ionosphere Activity by GPS

Wang Xiaoya^1,2 Zhu Wenyao¹
(1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030)
(2. Department of Land Surveying and Geo-informatics, The HongKong Polytechnic University, HongKong)

Abstract

Precise information on the ionospheric Total Electron Content (TEC) can be quickly provided by using GPS (Global Positioning System). The theory and methods to monitor the activities of ionosphere by GPS are discussed. It points out that TEC can be used to establish the highly accurate ionosphere model and satisfy the needs of scientific study, and TEC is derived by utilizing the phase observation and solving the differential code bias (DCB) only. The main error sources of TEC estimate are analyzed and the latest progress of ionospheric activities monitored by GPS is described.