【摘要】 搭载于高分五号卫星的大气环境红外甚高光谱分辨率探测仪（AIUS）是我国第一台太阳掩星红外光谱仪载荷,它具有在轨自主跟踪太阳功能,可以在750～4 160cm^-1（2.4～13.3μm）光谱范围内以高达0.03cm^-1的光谱分辨率测量大气层8～100km不同高度的切向透过率光谱,进而根据透射光谱的大气特征吸收情况,能反演出40多种大气痕量气体或污染气体的分布廓线信息,为大气科学研究、环境保护、数值气象预报等应用提供重要数据。保证探测仪实现高分辨率太阳掩星探测的最关键技术是甚高光谱分辨率傅里叶变换光谱探测技术和太阳跟踪系统技术,本文以这2个关键技术的突破为重点,回顾了探测仪系统的设计、试验与验证情况,同时也对在轨测试情况和初步反演结果进行了说明。更多还原

【Abstract】 Atmospheric infrared ultra-resolution spectrometer（AIUS）,which is onboard GF-5 satellite,is the first Chinese solar occultation infrared spectrometer payload.By incorporating autonomous sun-tracking function during sunrise in-orbit,it can measure the tangential atmospheric layer’s solar transmittance spectrum at 0.03 cm^-1 within bandwidth from 750 cm^-1 to 4 160 cm^-1 along the attitude from 8 km to 100 km.According to the molecular signature absorption spectrum,more than 40 trace-gas or pollutant-gas profiles could be retrieved so as to provide vital data for atmospheric research,environmental protection and numerical weather forecast.The most important key technologies that make it possible to measure the high-resolution solar transmittance spectrum are ultraresolution Fourier transform spectrometer technology and sun-tracking systematic technology.Based on the breakthrough of the mentioned 2 key technologies,this paper reviews system design and test of AIUS.And the onorbit commissioning status and the retrieved trace-gas profiles are demonstrated as well.更多还原