Calibration methods in large interferometric radiometers devoted to earth observation
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Calibration methods in Aperture Synthesis Radiometers (7,975Mb) (Accés restringit)
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Tipus de documentCapítol de llibre
Data publicació2000-01
EditorVSP
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This paper starts with a summary and classification of errors of any kind that corrupt the fundamental measurement performed by an InR (interferometric radiometer), the so-called visibilities. This summary is based on prior works from the authors concerning end-to-end rnodeling of the instrument. The paper follows with a
trade-off analysis of the capability of different calibration approaches to remove those errors and, at the end, to recover a map of brightness temperatures. In order to perform the trade-off analysis, extensive simulations have been undertaken to analyze the approaches found in the literature: the redundant space method, used in radio astronomy, the G-matrix method, used in ESTAR, and the Noise injection method. both centralized and distributed, proposed for MIRAS. A short description is made of each one and a comparative table is presented. The trade off is presented in terms of what kind of errors can be removed by each method, hardware requirements, robustness and on-ground/on-board input data required to perform such error correction.
CitacióTorres, F. [et al.]. Calibration methods in large interferometric radiometers devoted to earth observation. A: "Microwave radiometry and remote sensing of the earth's surface and atmosphere". VSP, 2000, p. 459-464.
ISBN90-6764-318-1
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VSP2000_CALIBRATION_METHODS.pdf | Calibration methods in Aperture Synthesis Radiometers | 7,975Mb | Accés restringit |