摘要
本文结合实例分析和介绍了影响 In SAR处理结果的几个重要环节。如 :数据源及像对选择 ;影响 In SAR处理的因素等。目前有 4～ 5种雷达卫星数据可以用于 In SAR的处理 ,ERS- 1/ 2卫星数据效果最好 ;差分 In SAR处理的工作步骤中 ,亚像元精度的配准、相干性分析、全相位恢复等是其中的关键技术。In SAR的精度和噪声水平是 In SAR能否实用的重要条件 ,噪声影响地物的相干性 ,噪声较大部位相干性消失 ,在整幅图像中噪声区域不大于30 % ,将不影响整体的 In SAR测量结果。
This paper introduces and studies several key steps which affect InSAR result, combined by instantiality At present, there are 4 5 SAR satellites which can be used in InSAR, especially, ERS 1/2 is the best in all SAR satellites The core procedures are as follow: sub pixel degree registration, coherence analysis, and unwrapped phase and so on The precision and noise level are important conditions which determine if InSAR can come a really useful tool, the precision of D InSAR is cm mm level in the measurement of crustal deformation, noise influence the coherence of surface feature, the coherence is lost in places of more noise
出处
《地球信息科学》
CSCD
2000年第3期58-64,共7页
Geo-information Science
基金
中国地震局"九五"重点攻关项目支持 编号是"96 -913-0 1-0 3-0 2"
