胥传东1，2，3 郭伟1，3 张晓辉 1，3张德海1，3 刘和光1，3

（1中国科学院空间科学与应用研究中心 北京 100080；2中国科学院研究生院 北京 100039；3国家八六三计划微波遥感技术实验室 北京 100080 ）

　　摘　要

    微波探测仪是嫦娥一号卫星有效载荷之一，设计成四频段全功率型微波辐射计，探测频率为3.0GHz、7.8GHz、19.35GHz和37.0GHz。微波探测仪需要经过可靠和准确的地面定标及验证实验。本文简要的介绍了一下微波探测仪采用两点定标的原理，在硬件辐射传输模型基础上，从-15度到+45度每隔10度，对接收机进行了定标实验，确定了定标方程。对实验结果进行了分析，获得了接收机的线性度、灵敏度，给出了定标精度，结果表明定标实验满足设计要求。

　　关键词：微波探测仪， 定标， 波段，亮度温度

The ground calibration and validation test on microwave sounder of Chang’E-1 （CE-1）

  Xu Chuan-dong1，2，3 ,Guo Wei1，3 ,Zhang Xiao-hui1，3,Zhang De-hai1，3,Liu He-guang1，3

（1 Center for Space Science and Applied Research, Chinese Academy of Science, Beijing 100080；2  Graduate School , Chinese Academy of Science ,Beijing  100039；3 National Microwave Remote Sensing Laboratory ,Beijing ,100080, China ）

Abstract: Microwave sounder is one of the main payloads of Chang’E-1 (CE-1) lunar satellite. It is a multi-band microwave radiometer with operation frequencies of 3.0GHz, 7.8GHz, 19.35GHz and 37.0GHz, respectively. Microwave sounder is required to be calibrated and validated before application. Here we introduces two point calibration principle at first ,and then we make calibration test on the microwave sounder receiver from -15 to +45 degree every 10 degree on the hardware radiative transfer model . We also get the antenna temperature calibration equation in this paper. Having analyzed the calibration test result , we get the linearity , precision and accuracy of the receiver . The result suggests that the calibration test satisfy the design requirement.