摘要
利用ERS-1/2于1996年和1998年获取的C波段SAR影像进行三通差分干涉处理,提取了上海陆家嘴地区在近两年时间内的地面形变场,并分析了影响差分干涉测量的因素。实验表明:利用差分干涉测量可有效探测城市地面形变,但需要采取有效的方法消除或降低大气延迟的影响。这是因为城市建设会引起失相关,而大气延迟是影响测量精度的主要因素。
Using the C-band ERS-1/2 images of Shanghai,which were collected in 1996 and 1998 respectively, the three pass differential interferometry is carried out. The deformation for about two years at Lujiazui region of Shanghai is detected and the effects on DInSAR are also analyzed. The experiment shows that the urban deformation can be effectively detected by differential interferometry, but the effective methods will needed to eliminate or decrease the effect of atmospheric delay because urban constructions will result in de-correlation and atmospheric delay mainly affects the surveying accuracy.
出处
《大地测量与地球动力学》
CSCD
北大核心
2007年第4期16-20,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40474008
40374003)
教育部优秀教师资助计划(2003109)
关键词
合成孔径雷达
三通差分干涉测量
城市地面形变
大气延迟
上海地区
SAR （ Synthetic Aperture Radar） , three pass differential interferometry, urbanground deformation, atmospheric delay, Shanghai region
