ASAR和PALSAR地表形变监测数据的对比分析

Contrast Analysis of ASAR and PALSAR Surface Deformation Monitoring Data

ASAR和PALSAR是地表形变监测中常用的两种数据类型。为了研究这两种数据在地表形变监测中的特点,该文以日本东南部千叶市地区的23景ALOS PALSAR数据和34景ENVISAT ASAR数据为例,采用SBAS方法分别对其进行相应的分析和处理。最终结果表明两种数据监测出的形变速率基本一致,吻合度较高,但PALSAR数据具有更高的空间连续性,说明了L波段的数据比C波段的数据相干性更高。

ASAR and PALSAR are two commonly used data types in surface deformation monitoring. In order to study the characteristics of these two kinds of data in surface deformation monitoring,this paper takes the 23 scenes ALOS PALSAR data and 34 scenes ENVISAT ASAR data of Chiba in southeast Japan as an example,the SBAS method is used to analyze and deal with them. The finally results show that the deformation rate monitored by the two datas are basically consistent,the degree of anastomosis is high.But the PALSAR data has higher spatial continuity. It shows that the coherence of L band data is higher than C band data.