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A new calibration technique for interferometric radiometers

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Corbella Sanahuja, IgnasiMés informacióMés informacióMés informació
Torres Torres, FranciscoMés informacióMés informacióMés informació
Camps Carmona, Adriano JoséMés informacióMés informacióMés informació
Bará Temes, Francisco JavierMés informació
Document typeConference report
Defense date1998
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
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.
CitationCorbella, I., Torres, F., Camps, A., Bara, F. A new calibration technique for interferometric radiometers. A: Sensors, Systems, and Next-Generation Satellites. "Proceedings of SPIE 3498: Sensors, Systems, and Next-Generation Satellites II". Barcelona: 1998, p. 359-366. 
URIhttp://hdl.handle.net/2117/88096
DOI10.1117/12.333649
ISBN0-8194-2953-8
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  • RSLAB - Remote Sensing Research Group - Ponències/Comunicacions de congressos [651]
  • Departament de Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos [3.263]
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