“高分五号”卫星光学遥感载荷的技术创新

Technical innovation of optical remote sensing payloads onboard GF-5 satellite

介绍了高分五号卫星上由北京空间机电研究所研制的两台载荷的性能和技术先进性。其中,大气环境红外甚高光谱分辨率探测仪具有光谱分辨率高、太阳跟踪精度高、光谱定标精度高的技术特点。全谱段光谱成像仪具有谱段范围宽、空间分辨率高、辐射定标精度高的技术特点。与国内外同类载荷相比,两台载荷都达到了国内领先、国际先进的技术水平,使我国在空间高光谱分辨率和高精度观测能力上有了大幅提升。对两台载荷的技术先进性进行了分析,并给出了相关测试结果。最后,展望了后续多种高光谱载荷的发展方向。

The performances and advancements of the two optical payloads, produced by Beijing Institute of Space Mechanics and Electricity, onboard GF-5 satellite were introduced in the paper. The atmosphere environment high-resolution infrared Fourier transform spectrometer had high-resolution, high sun tracking accuracy and high spectral calibration accuracy. Visual and infrared multispectral sensor had high spectral resolution, wide spectral range and high radiometric calibration accuracy. Compared with other similar optical payloads, they were advanced both here and abroad which greatly improved the ability of high-precision observation of China. Key parameters, system composition, key technology, advancements and test results were introdued. At the end of this paper, development direction and enlightenment of follow-up spectrometer were pointed out.