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Analysis on Effect of Temperature Measurement on the Accuracy of Ground Calibration for Microwave Sounder of Chang'E-1(CE-1) |
WEI Mo1,2, XU Chuan-dong1,2, GUO Wei1
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(1.Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing100080,China;
2.Graduate University of Chinese Academy of Sciences,Beijing100036,China) |
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Abstract An experiment on the ground calibration of ChangE-1(CE-1) Microwave Radiometer based on the modified hardware radiative transfer model is introduced. The experimental results are analysed and validated, based on which analyzes the effect of temperature measurement on the results of ground calibration for microwave sounder. The temperature measurement with the accuracy of 0.5 K was tested and the test results indicated that the contribution of thermometric error to the accuracy of the receiver was less than 0.1 K, which means the temperature measurement met the requirements of the calibration. The calibration results have been modified remarkably by the correction of modified hardware radiative transfer model based on temperature measurement, when the working temperature of receiver is much different from that of ambient temperature.
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Received: 29 October 2006
Published: 25 November 2011
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