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

页码：2001 / 2006

页数：6

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