1 May 2007 Influence of complicated background noise on passive ground-based radiometer with low elevation angle
Author Affiliations +
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.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lulu Wu, Yu Liu, Yaoting Zhu, "Influence of complicated background noise on passive ground-based radiometer with low elevation angle", Proc. SPIE 6548, Passive Millimeter-Wave Imaging Technology X, 654805 (1 May 2007); doi: 10.1117/12.717576; https://doi.org/10.1117/12.717576
PROCEEDINGS
8 PAGES


SHARE
Back to Top