摘要
对基于GPS数据的大气水汽扰动模型(GPS topography-dependent turbulence model,GTTM)和GPS/MODIS集成的大气水汽改正模型进行了比较研究。试验证明,GTTM模型和GPS/MODIS集成模型的改正方法都可以大大降低大气水汽对InSAR测量地面形变量精度的影响。另外,当两种模型都用于改正InSAR观测值时,它们具有很强的互补性。
A comparison between GPS topography-dependent turbulence model （GTTM） and GPS/MODIS integrated water vapour correction model is performed. The experimental results show that both correction models are able to improve InSAR derived deformation signals from 10 mm to 5 mm after correction by reducing water vapour effects on InSAR measurements. It canalso be concluded that the GTTM and GPS/MODIS integrated models are complementary when correcting InSAR measurements.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2008年第7期723-726,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40576044)
