中国激光, 2017, 44 (1): 0110002, 网络出版: 2017-01-10
干涉数据中非线性的校正及其对辐射定标的影响 下载: 714次
Correction to Nonlinearity in Interferometric Data and Its Effect on Radiometric Calibration
摘要
对大气垂直探测仪(AVS)的探测器引入的非线性进行了分析, 通过对比理想的干涉数据和带有二次项非线性的模拟干涉数据, 研究了二次项非线性对光谱的影响。对实际采集的干涉数据的二次项非线性进行了校正, 并将校正后的数据运用到了AVS的辐射定标中。实验结果表明, 校正后数据的定标曲线拟合优度大约提高了0.3%。在星上两点定标中, 校正后的数据比校正前的更准确。
Abstract
The nonlinearity introduced by the detector of atmospheric vertical sounder (AVS) is analyzed. The comparison between the ideal interferometric data and the simulated interferometric data with quadratic nonlinearity is conducted, and the influence of quadratic nonlinearity on spectrum is illuminated. The correction to quadratic nonlinearity in the practically acquired interferometric data is performed and the corrected data are adopted to the radiation calibration of AVS. The experimental results indicate that the goodness-of-fit of calibration curves after data correction is approximately increased by 0.3%. The data after correction are more accurate than before in the two-point calibration on stars.
杨敏珠, 邹曜璞, 张磊, 韩昌佩. 干涉数据中非线性的校正及其对辐射定标的影响[J]. 中国激光, 2017, 44(1): 0110002. Yang Minzhu, Zou Yaopu, Zhang Lei, Han Changpei. Correction to Nonlinearity in Interferometric Data and Its Effect on Radiometric Calibration[J]. Chinese Journal of Lasers, 2017, 44(1): 0110002.