全球导航卫星系统应用
计算机科学
卫星
职位(财务)
多普勒效应
卫星导航
实时计算
卫星系统
精密点定位
遥感
信号(编程语言)
全球定位系统
伽利略(卫星导航)
电信
工程类
航空航天工程
地理
物理
经济
程序设计语言
天文
财务
作者
Zizhong Tan,Honglei Qin,Cong Li,Chao Zhao
出处
期刊:IEEE Access
[Institute of Electrical and Electronics Engineers]
日期:2019-01-01
卷期号:7: 83412-83423
被引量:33
标识
DOI:10.1109/access.2019.2924470
摘要
The global navigation satellite system (GNSS) system has a number of disadvantages such as weak signal strength and high cost, while signals of opportunity (SOPs) can make up for these shortcomings. Non-GNSS satellite SOPs offer some advantages in terms of high signal strength, low cost that belongs to ground-based SOPs and better coverage than ground-based SOPs. We investigate a new method of instantaneous Doppler positioning with Iridium signals that are treated as satellite SOPs. Initially, the Iridium SOPs positioning system is introduced through a description of its characteristics and components. Next, the instantaneous Doppler positioning algorithm is introduced, and the effects of measurement errors and satellite orbital errors on the positioning solution are analyzed by a new method. Furthermore, the influence of constellation geometrical distribution on positioning performance is analyzed based on the relative position relationship between discrete distribution points of the receiver position. Finally, the simulation data are used for theoretical verification, and the real data experiment is implemented with IRIDIUM NEXT signals. The results show that the two-dimensional (2-D) position accuracies of approximately 22 m ($1\sigma$ ) can be achieved with the height aiding when the static receiver has a complete view of the sky.
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