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Proceedings Paper

Influence of complicated background noise on passive ground-based radiometer with low elevation angle
Author(s): Lulu Wu; Yu Liu; Yaoting Zhu
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Paper Abstract

A ground-based radiometer has been used to measure airborne targets at low elevation angles, the complicated background noise received by the radiometer has been classified, and its influence on the main lobe and side lobe of the antenna analyzed. Firstly the influence of elevation angle and the operating frequency on the background noise received by the main lobe has been analyzed, and corresponding plots have been presented. Secondly, the influence of elevation angle and terrestrial surface parameters on background noise received by the side lobe has been analyzed and corresponding equations and plots have also been presented. Mathematical models and theoretical curves are in good agreement with the experimental data collected at 8mm from sky brightness temperature measurements with different terrestrial surface brightness temperatures.

Paper Details

Date Published: 1 May 2007
PDF: 8 pages
Proc. SPIE 6548, Passive Millimeter-Wave Imaging Technology X, 654805 (1 May 2007); doi: 10.1117/12.717576
Show Author Affiliations
Lulu Wu, Huazhong Univ. of Science and Technology (China)
Yu Liu, Huazhong Univ. of Science and Technology (China)
Yaoting Zhu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 6548:
Passive Millimeter-Wave Imaging Technology X
Roger Appleby; David A. Wikner, Editor(s)

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