This paper analyses the information configuration in remote sensing observation data of imaging spectrometer

including the spectral character of ground surface

instrument parameter and atmosphere transmission and also discusses on the physical process and measurement chain of radiometric calibration of imaging spectrometer. Then according to the international updated method of ISO1993(E)'

Express Guide of Measurement Uncertainty

the measurement uncertainty and combined standard uncertainty of eleven influence quantities of radiometric calibration are analyzed by the special equipment such as radiation standard

light source of integral sphere

spectroradiometer and in-flight calibration sets and so on. To accomplish the radiometric calibration

the measurement process of multi-measurement chain is set up. Experimental results show that the radiometric calibration of the imaging spectrometer requires special advanced equipment and technique. To reach the absolute accuracy of 5%~8%

the uncertainty of standard spectral irradiance must be 3%~5% and the measurement uncertainty of the other influence quantity items must be limited within 1%~2%.