上海航天（中英文）2024，Vol.41Issue(1)：137-145,9.DOI:10.19328/j.cnki.2096-8655.2024.01.018
DQ-1宽幅成像光谱仪发射前载荷定标技术
Pre-launch Calibration Technology of DQ-1 Wide-Field Imaging Spectrometer
摘要
Abstract
As a scientific research satellite in the national civil space infrastructure planning,the quantitative development for the atmospheric environment monitoring satellite will be more and more important for the application of space remote sensing.As the main instrument for the atmospheric environment monitoring satellite,the wide-field imaging spectrometer can achieve the multi-spectral information about the land surface and atmosphere in the spectral range from visible light to long-wave infrared bands(0.415～12 μm).The 45° scanning mirror and racemic system is used for the scanning imaging,and the coaxial telescope system is applied to the optical structure to simultaneously obtain ultra-wide and high spatial resolution imaging from the ground with 21 spectral bands on the focal plane of the three detectors.To accurately obtain the quantitative relationship between the radiance and the instrument response,the full-optical path and full-aperture radiometric calibration tests are carried out for the wide-field imaging spectrometer before the satellite launches.The integrating sphere calibration in the visible short-wave spectrum and the vacuum infrared calibration in the medium and long wavelength bands are introduced,respectively,which provides a good guarantee for the quantitative application of users.During the calibration process,the error sources and calibration accuracy in the transfer path are analyzed and evaluated.关键词
光学遥感/辐射定标/定量化/定标精度Key words
optical remote sensing/radiometric calibration/quantification/calibration accuracy分类
信息技术与安全科学引用本文复制引用
王阳,张冬冬,张锷,熊千千,钮新华,陈帅帅..DQ-1宽幅成像光谱仪发射前载荷定标技术[J].上海航天（中英文）,2024,41(1):137-145,9.基金项目
国家重点研发计划(2022YFB3902004) （2022YFB3902004）
