摘要
介绍MICROTOPS Ⅱ型5通道手持式太阳光度计的基本测量原理、气溶胶光学厚度计算方法,重点对其定标方法进行研究,分析了直射通道的Langley定标法和标准仪器对比定标法,使用经过Langley定标的CE318型标准太阳光度计对其进行对比定标。实验表明:两种不同仪器间对比定标可以显著提高测量精度,得到440nm和870nm波段的AOD(Aerosol Optical Depth)指标与标准仪器的偏差在0.03以内。
This paper introduces the basic measurement theory and a calculation method of Aerosol Optical Depth on MICROTOPS Ⅱ 5-channels hand held sun photometer and then focuses on the calibration methods,the analysis of Langley's calibration and comparative calibration.It gets a CE318sun photometer after making Langley calibration to carry out comparative calibration on MICROTOPS II 5-channels handheld sun photometers.It proves that comparative calibration of different instruments improves accuracy significantly and makes its Aerosol Optical Depth less than 0.03 with the norm of standard instrument at 440nm and 870nm.
出处
《遥感信息》
CSCD
2013年第5期32-36,共5页
Remote Sensing Information
基金
中国科学院战略性先导科技专项项目(项目编号:XDA05100000
子课题编号:XDA05100202)
