Aspect and incidence angle sensitivity in ERS-1 SAR data

被引：37
|
作者：
Gauthier, Y [1 ]
Bernier, M [1 ]
Fortin, JP [1 ]
机构：
[1] Univ Quebec, Natl Inst Sci Res, INRS Eau, St Foy, PQ G1V 4C7, Canada
来源：
INTERNATIONAL JOURNAL OF REMOTE SENSING | 1998年 / 19卷 / 10期
关键词：
D O I：
10.1080/014311698215117
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
Large variations in backscattering coefficients were observed on ERS-1 SAR images acquired from ascending and descending orbits, within 36 hours, over an agricultural area and under stable winter conditions. Three possible causes were investigated: (1) environmental factors; (2) SAR processor instability; and (3) aspect and incidence angle sensitivity. The look direction (aspect angle) accounted for a 1.5 dB difference in backscattering coefficients. The remaining variations were related to the incidence angle. A correction model is proposed.
引用
收藏
页码：2001 / 2006
页数：6
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