CE-1卫星微波探测仪测温电路对地面定标精度的影响分析

简要介绍了基于微波连接网络硬件辐射传输模型的CE-1卫星微波探测仪定标试验,给出了试验结果,并对试验结果进行了分析和验证。在此基础上,重点分析了测温精度对地面定标结果的影响,分析结果表明,测温电路的测温精度达到0.5 K,测温电路的性能满足微波探测仪定标的要求,测温误差对地面定标精度的贡献小于0.1 K,在接收机工作温度和环境温度差别较大时,基于测温电路的微波连接网络硬件辐射传输模型校正使定标结果得到明显的改善。

Analysis on Effect of Temperature Measurement on the Accuracy of Ground Calibration for Microwave Sounder of Chang'E-1(CE-1)

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.