摘要
使用2002年10月-2006年2月的ENVISAT SGDR数据,并利用重跟踪技术实施了距离等相关改正之后,计算了青海湖的水位变化;同时分别利用EGM96、青海省的似大地水准面模型计算了青海湖的正高和正常高相应水位变化,并与青海湖下社站的水文观测数据进行了验证。研究结果表明,利用波形重跟踪技术在某种程度上可以改进内陆水域的距离精度,能够较好地监测出青海湖的水位变化。
The lake level variation using satellite altimetric data is focused in the environment monitoring field. The level of Qinghai Lake is computed using waveform retracking technology based on the ENVISAT SGDR data from Oct 2002 to Feb. 2005. The level variations of the orthometric and normal height using EGM96 model and quasi-geoid model of Qinghai are analyzed respectively. And then the results are compared with the in-situ gauge record. The results show that the accuracy of measured altimeter range to inland lake is improved by retracking technique , and the variation of Qinghai lake level from altimetric data is very similar with that from the in-situ gauge record.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2008年第1期64-67,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40304001)
关键词
卫星测高
波形重跟踪
内陆湖
青海湖
satellite altimetry
waveform retraeking
inland lake
Qinghai lake
