摘要
介绍了一种用于大气CO2太阳吸收光谱地基观测的高光谱太阳辐射计，包括仪器的设计结果及相对光谱辐射亮度的测量原理。以可调谐红外激光器加积分球作为定标光源，详细介绍了波长、仪器线型函数的定标过程和方法。定标结果表明，在仪器有效工作波段（1560～1575nm）内，光谱分辨能力为0．097nm，杂散光水平在0．5％左右。定性比较了仪器的大气CO2太阳吸收光谱测量结果与LBLRTN软件的理论计算结果，两者在吸收峰的强度、位置、形状等方面都具有较好的吻合度。
High spectral resolution solar radiometer for ground-based measurement of atmosphere CO2 absorption spectrum is suggested, including a brief introduction of instrument design, method of relative spectral radiance measuring, calibration of spectrum and instrument line shape （ILS）. It is indicated that in the spectral band between 1560 nm and 1575 nm, the spectral resolution of instrument is 0. 097 nm, and the relative intensity of stray light is about 0. 5%. For instrument validating, CO~ absorption spectrum of experiments are compared with those of theoretic calculation by LBLRTN software. Comparison shows that the relative intensity, wavelength position and shape of those two absorption spectrums are accordant.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2014年第2期261-266,共6页
Acta Optica Sinica
基金
中国科学院合肥物质科学研究院知识创新工程青年人才领域前沿项目(Y03RC11123)
关键词
遥感
大气CO2观测
高光谱
太阳辐射计
remote sensing
measurement of atmospherical CO2
high spectral resolution
solar radiometer
