FIELD: physics.
SUBSTANCE: method for radiation calibration involves measuring a signal with a satellite sensor and simultaneous sub-satellite ground-based measurement of brightness coefficients and albedo of the underlying surface. Optical thickness of the atmosphere and luminance of the sun on the test area, the size of which corresponds to spatial resolution of the sensor, are measured. Measurements are taken in two (or more) test areas with different albedo of the underlying surface and the calibration factor is calculated based on the relationship between the signal measured at the input of the satellite sensor and the brightness coefficient of the underlying surface.
EFFECT: invention increases accuracy of absolute energy calibration and simplifies the calibration procedure.
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