The visibility function in interferometric aperture synthesis radiometry

被引：249

作者：

Corbella, I ^{[1
]}

Duffo, N ^{[1
]}

Vall-Ilossera, N ^{[1
]}

Camps, A ^{[1
]}

Torres, F ^{[1
]}

机构：

[1] Univ Politecn Cataluna, Dept Signal Theory & Commun, ES-08034 Barcelona, Spain

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2004年 / 42卷 / 08期

关键词：

interferometric aperture synthesis; microwave radiometry;

D O I：

10.1109/TGRS.2004.830641

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 fundamental equation of interferometric aperture synthesis radiometry is revised to include full antenna pattern characterization and receivers' interaction. It is shown that the cross correlation between the output signals of a pair of receivers is a Fourier-like integral of the difference between the scene brightness temperature and the physical temperature of the receivers. The derivation is performed using a thermodynamic approach to account for the effects of mutual coupling between antenna elements. The analysis assumes that the receivers include ferrite isolators so that the noise wave passing from the receiver toward the antenna can be modeled as uncorrelated ambient noise. The effect of wide beamwidth antennas on the polarization basis of the retrieved brightness temperature is also discussed.

引用

页码：1677 / 1682

页数：6

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