Issues of Empirical Radiometric Calibration of Spectrometric Equipment Installed on the UAVs
The article is devoted to consideration of the reflection factor dependence of ground-based calibration test panels used in the vicarious empirical calibration of radiometric spectral equipment installed on the UAVs on the radiation wavelength. Having considered the saturation effect of digital readouts (DN) of the target object image due to the DN logarithmic dependence on the reflection factor of real-life objects, the peak achievement conditions for the DN value averaged over the entire wavelength range have been studied. It is shown that such a peak value can be achieved if there is an inverse relation between the slope of reflective specifications of test panels and the wavelength. It is concluded that the actually applied test panels better comply with this requirement at high values of the “gray level” indicator.
Tags: gray level ground-based test objects radiometric calibration reflection factor uav platform бпла-платформа коэффициент отражения наземные тест-объекты радиометрическая калибровка уровень серого
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