环境与减灾小卫星高光谱成像仪是搭载在中国将于2007年发射的环境与减灾小卫星A星（HJ-1A）上的传感器之一，在0．45—0．95μm波段范围内设置了约135个通道，空间分辨率为100m，回访周期约为96h。本文根据传感器的参数设置，使用HYPERION数据仿真模拟了HJ-1A高光谱数据，探讨了它在陆地气溶胶光学厚度探测中的应用。文中使用浓密植被算法反演了模拟数据的气溶胶光学厚度。结果表明，HJ-1A高光谱成像仪能够很好地应用于陆地气溶胶光学厚度的反演。

HJ-1 Hyperspectral mi age radiometer is on the HJ-1A satellite to be launched in 2007. Itwill\nprovide mi ages in about135 spectralbands between 0·45 and 0·95μm, with spatial resolution of100 meters.\nHJ-1Hyper-spectral mi age radiometerwillgive a return visitevery96 hours. Aerosoloptical thickness retrieval\nis discussed in this paper. The aerosol optical thickness retrieval is always conducted over the dense dark\nvegetation, because green vegetation are dark in the red(around 0·66μm) and blue(around 0·46μm) spectral\nregion. The radiance measured by the sensor increases with the aerosol optical depth increases, the aerosol\ninformation can be easily separated from the land surface. We smi ulated the HJ-1 high-spectral data using\nHYPERION data, then selected the algorithm ofDense Dark Vegetation to retrieve aerosol optical thickness\nfrom the smi ulated data. For lacking of shortwave-infrared and mid-infrared bands, the dense dark vegetation\npixels detected byNDVI(normalized difference vegetation index), the reflectance of the dense dark vegetation\npixels is0·035 in blue band and 0·055 in red band. The results show that theHJ-1 high-spectraldata can be well applied in aerosol optical thickness retrieva.l