【摘要】 星载傅叶变换光谱仪是搭载于下一代气象卫星——风云四号气象卫星上的一台红外遥感仪器,它在静止轨道上探测大气的温度、压力和水汽的三维分布,为实现数值天气预报提供有价值的气象资料。光谱定标仪在使用前必须进行精确的光谱定标和辐射定标。而光谱标定,并测定精确的仪器函数是辐射定标的基础。主要论述了用气体吸收法对仪器函数进行测定,并利用气体吸收线的位置对光谱进行精确标定。更多还原

【Abstract】 The space-borne Fourier Transform Spectrometer (SBFTS) carried by FY—4 meteorology satellite is one of infrared remote sensing instruments. It acquires the temperature, pressure and humidity of atmosphere on geostationary orbit, and supplies the valuable weather data for next numerical weather prediction. For the proper use of the SBFTS it is imperative to provide high quality spectral characterization and characterizations of the instrument line shape (ILS) . How to do spectral calibration and measure the ILS with the Gas Cell Methodology are mainly discussed.更多还原