PHASE CALIBRATION OF POLARIMETRIC RADARS FROM SLIGHTLY ROUGH SURFACES

被引：16
|
作者：
GUISSARD, A
机构：
[1] Department of Electrical Engineering, Université Catholique de Louvain
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 1994年 / 32卷 / 03期
关键词：
D O I：
10.1109/36.297991
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The phase calibration problem for polarimetric radars is discussed. More specifically, the assumption that the copolar vertical and horizontal returns from a slightly rough surface are in phase is critically reviewed. It is concluded by means of a theoretical analysis that the phase difference for moist soil targets can reach up to 10-degrees at 15 GHz and for incidence angles of 50-degrees. However the assumption of zero phase difference is a good approximation for dry soils, lower frequencies, and low incidence angles.
引用
收藏
页码：712 / 715
页数：4
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