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Proceedings Paper

New calibration technique for interferometric radiometers
Author(s): Ignasi Corbella; Francisco Torres; Adriano Camps; Javier Bara
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Paper Abstract

This paper presents a new method for receiver calibration of interferometric radiometers. It is based on the distributed noise injection mechanism and it consists of fully calibrating the baseline error terms of the central antennas (which share the same noise source) while keeping only separable error calibration for the distant ones. This improves the accuracy of the shortest baselines, which are the most significant ones due to the smoothness of the brightness temperature to measure. Simulations show that, compared to previously reported methods, the improvement on the radiometric resolution can be as high as 3.9. The robustness against frequency response mismatch between receivers is improved by a factor 2.9.

Paper Details

Date Published: 21 December 1998
PDF: 8 pages
Proc. SPIE 3498, Sensors, Systems, and Next-Generation Satellites II, (21 December 1998); doi: 10.1117/12.333649
Show Author Affiliations
Ignasi Corbella, Univ. Politecnica de Catalunya (Spain)
Francisco Torres, Univ. Politecnica de Catalunya (Spain)
Adriano Camps, Univ. Politecnica de Catalunya (Spain)
Javier Bara, Univ. Politecnica de Catalunya (Spain)

Published in SPIE Proceedings Vol. 3498:
Sensors, Systems, and Next-Generation Satellites II
Hiroyuki Fujisada, Editor(s)

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