摘要
InSAR技术是20世纪后期发展起来的一种新的测量方法,由于其具有能够实现全天时、全天候的对地观测,现已成为空间对地观测技术的研究热点。D-InSAR技术是在InSAR技术基础上发展起来的一种可以用来检测地面微小运动的新技术,其可以监测厘米级,甚至毫米级形变的精度。文中分析了D-InSAR技术用于形变监测中存在的误差及其减弱措施,并对该技术在西安地区的应用作了相应的分析。
Since the late of the 20th century, satellite synthetic aperture radar interferometry （InSAR） has been evolved as a very promising technology for mapping. It has been a hot field from space to earth observation, with the characteristics of all weather, all day and night capability. D-InSAR technique based on InSAR is a new method for monitoring very small ground settlement, and has the centimeters or millimeters level. This paper introduces sources of errors and its reduction about D-InSAR for deformation monitoring. In the meantime, the application of D-InSAR in Xi＇an is given.
出处
《测绘工程》
CSCD
2008年第3期34-36,共3页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(40672173)
国家自然科学基金重大资助项目(40534021)
关键词
合成孔径雷达干涉测量
差分干涉
地面沉降
sythetic aperture radar interferometry
differential interferometry
ground settlement
