大地测量与地球动力学2012，Vol.32Issue(2)：1-6,6.
ALOS PALSAR雷达影像InSAR数据处理中的基线和地形误差分析
ERROR ANALYSIS OF BASELINE AND TERRAIN IN InSAR DATA PROCESSING USING ALOS PALSAR
摘要
Abstract
Seeing that there are still many factors governing the accuracy of InSAR although they have appeared to good application in various field as earthquake, landslide,etc. this paper focus on the two sources of errors controlling the accuracy of InSAR. In the first place, theoretical analysis has been first made for the evaluation of influence of baseline and terrains errors on surface deformation. On the basis of above theoretical analysis, we estimated the influence of baseline errors and terrain errors on InSAR for ALOS PALSAR radar images without accurate orbit information. The spatial patterns of additional surface deformation due to the two error sources have also been retrieved. The results show that the orbit accuracy of ALOS PALSAR is 3 -5 m, in which the displacements must be rectified for the low orbit accuracy. The simulation and experimentation all show that baseline is main error sources in the use of ALOS PALSAR and terrain errors is negligible. For the accuracy of better than 1 cm in deformation measurements, the length of baseline must be less than 400 m under current SRTM DEM if two-pass interferometry was used.关键词
ALOS PALSAR/InSAR/基线误差/地形误差/基线长Key words
ALOS PALSAR/ InSAR/ baseline errors/ terrain errors/ length of baseline分类
天文与地球科学引用本文复制引用
沈强,乔学军,金银龙,汪汉胜,江利明..ALOS PALSAR雷达影像InSAR数据处理中的基线和地形误差分析[J].大地测量与地球动力学,2012,32(2):1-6,6.基金项目
水资源与水电工程科学国家重点实验室开放基金(2009B054) （2009B054）
国家自然科学基金(41004008,40825012) （41004008,40825012）
冰冻圈国家重点实验室开放基金(SKLCS 09-03) （SKLCS 09-03）
