利用GNSS反射信号载波测量湖面高度变化

姚彦鑫; 杨东凯; 张其善

利用GNSS反射信号载波测量湖面高度变化

北京航空航天大学电子信息工程学院, 北京 100191

基金项目: 国家863计划资助项目(2006AA09Z137,2007AA12Z340)

详细信息

作者简介:
姚彦鑫(1982-),女,河北蔚县人,博士生,yanxin_buaa@126.com.

中图分类号: TN 965.5
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- 被引次数: 0
出版历程
- 收稿日期: 2009-05-05
- 网络出版日期: 2009-09-30

Lake height variation measurement utilizing GNSS reflected signal carrier phase

School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 给出一种利用导航卫星反射信号的载波相位测量光滑湖面高度变化的方法.首先建立载波相位观测方程,通过在直射与反射信号的观测量之间求单差,再在历元间求双差的方法,消除了大量误差并得到了直射与反射信号的几何路径差;然后根据各颗卫星的观测值和高度角等信息计算出湖面高度变化,并把各卫星得到的湖面高度度变化值进行加权平均以提高测量系统的精度和可靠性.仿真验证了方法在-15dB信噪比下达到了毫米级的测量精度.
- 全球导航卫星系统 /
- 高度 /
- 遥感 /
- 反射 /
- 载波
Abstract: A lake height variation measurement method utilizing global navigation satellite system(GNSS) reflected signal carrier phase was given. Carrier phase observation equations were built firstly. Then the single-differences between the carrier phase observation measurements for direct and reflected signal and the double-differences between epochs were calculated. A large amount of errors was eliminated by the differencing process. Also, the geometry path differences of direct and reflected signal were derived. The lake height variation was calculated using observation measurement and elevation information from separate satellite. The weighted average of the lake height variations from various satellites was derived to improve the precision and reliability of the measuring system. Simulation confirms that the precision of millimeter order is achieved with the method under -15dB signal to noise ratio(SNR).
- global navigation satellite system /
- altimetry /
- remote sensing /
- reflection /
- carrier

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参考文献(1)

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