NSSC OpenIR  > 微波遥感部
Alternative TitleChannel selection and calibration of K band microwave radiometer
何杰颖; 张升伟; peggy.hejieying@163.com
Source Publication电波科学学报
Keyword地基 微波辐射计 水汽廓线 定标
Abstract利用K波段20~30GHz探测大气水汽廓线,深入分析地基微波辐射计的关键技术与性能指标,确定通道频率和个数的优化组合,并对所选通道利用非线性定标方程外定标,确定地基微波辐射不同通道的定标曲线和系统注入噪声,分析各通道定标误差。进而,采用奇偶周期方式的大气定标法进行参数校正。试验证明:以全球定位系统(GPS)无线电探空进行性能为标准,定标后的数据反演均方差为0.52 g/m~3,相关系数为0.965.
Other AbstractChannels in K band which frequency is between 20~30 GHz are chosen to retrieve atmospheric water vapor density profiles.Critical techniques and specifications of ground-based microwave radiometer are analyzed.Best combination of channel frequency and number selection is achieved and all channels are calibrated through nonlinear algorithm.Furthermore,sky-tipping method in the form of odd and even period is presented to test and validate the accuracy of nonlinear calibration procedure.According to radiosonde profiles,the retrieval profile after calibration has a root mean square error of 0.52 g/m~3 with correlation coefficient of 0.965.
Indexed ByEI ; CSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Authorpeggy.hejieying@163.com
Recommended Citation
GB/T 7714
何杰颖,张升伟,peggy.hejieying@163.com. K波段微波辐射计通道优化和定标研究[J]. 电波科学学报,2012,27(5):1012-1018.
APA 何杰颖,张升伟,&peggy.hejieying@163.com.(2012).K波段微波辐射计通道优化和定标研究.电波科学学报,27(5),1012-1018.
MLA 何杰颖,et al."K波段微波辐射计通道优化和定标研究".电波科学学报 27.5(2012):1012-1018.
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