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2002•Unpublished venueRequires access

A method for calibrating the ground-based triple-channel microwave radiometer

Hongbin Chen

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Abstract

Based on the high correlation between the brightness temperatures (TBs) measured by the ground-based triple-channel microwave radiometer at 20.6, 31.65, and 90.0 GHz, a new calibration method is proposed with which the calibration coefficients and sky TBs can simultaneously be obtained by solving the systems of nonlinear equations expressing the radiometric outputs at 6 observation angles. The feasibility of this calibration method has been demonstrated by numerical simulations. Its further test will be carried out in applications with realistic measurement data.

About this research paper

What this paper is about

Based on the high correlation between the brightness temperatures (TBs) measured by the ground-based triple-channel microwave radiometer at 20.6, 31.65, and 90.0 GHz, a new calibration method is proposed with which the calibration coefficients and sky TBs can simultaneously be obtained by solving the systems of nonlinear equations expressing the radiometric outputs at 6 observation angles. The feasibility of this calibration method has been demonstrated by numerical simulations. Its further test will be carried out in applications with realistic measurement data.

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Available abstract

Based on the high correlation between the brightness temperatures (TBs) measured by the ground-based triple-channel microwave radiometer at 20.6, 31.65, and 90.0 GHz, a new calibration method is proposed with which the calibration coefficients and sky TBs can simultaneously be obtained by solving the systems of nonlinear equations expressing the radiometric outputs at 6 observation angles. The feasibility of this calibration method has been demonstrated by numerical simulations. Its further test will be carried out in applications with realistic measurement data.

Key concepts: Calibration, Microwave radiometer, Radiometer, Remote sensing, Microwave, Brightness temperature, Channel (broadcasting), Radiometry

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