光学学报, 2020, 40 (17): 1712002, 网络出版: 2020-08-26  

光学载荷多场地地基综合验证定权方法 下载: 796次

Weight Determination Method for Multi-Site Ground Comprehensive Validation of Optical Sensors
作者单位
1 中国科学院空天信息创新研究院定量遥感信息技术重点实验室, 北京 100094
2 中国科学院大学电子电气与通信工程学院, 北京 100049
摘要
光学载荷辐射定标结果的地基验证受地-气系统中多个因素的综合影响,导致单场地单次验证结果存在差异,且无法对结果进行有效对比和综合分析。考虑了目标特性、大气环境等因素对单场地单次验证结果的影响,提出了一种以验证结果不确定度为权重的基于加权平均值综合定权方法,获取更接近真实值的关键比较参考值(KCRV),实现对单场地单次验证结果的对比和综合分析。同时,基于国家高分辨遥感综合定标场不同反射特性的地面目标对国产高分辨率载荷ZY-3/MUX的辐射定标结果进行综合验证。结果表明,基于12个验证样本的KCRV在蓝光、绿光、红光、近红外波段分别为3.88%、5.42%、6.14%、9.81%,对应的不确定度分别为1.79%、1.87%、1.96%、2.02%,其中,9个验证样本的等效度小于0.1,证明这些样本的验证结果更接近KCRV。
Abstract
The ground validation of radiometric calibration results of optical sensors is comprehensive affected by many uncertainty factors in earth-atmosphere system, which leads to the difference of single verification results in single site, and unable to effectively compare and comprehensively analyze the results. In this study, in consideration of the influence of target characteristics, atmospheric environment, and other factors on the single verification results of single site, a comprehensive weighting method based on weighted average value with the uncertainty of verification results as the weight is proposed to obtain the key comparative reference value (KCRV) closer to the real value, so as to realize the comparison and comprehensive analysis of single site verification results. Meanwhile, the radiometric calibration results of ZY-3/MUX made in China are comprehensively verified based on the ground targets with different reflection characteristics in the national high resolution remote sensing integrated calibration field. The results show that the KCRVs of 12 validation samples in blue, green, red and near-infrared bands are 3.88%、5.42%、6.14%、9.81% respectively, the corresponding uncertainty is 1.79%, 1.87%, 1.96%, and 2.02%, respectively. Among them, the equivalence degrees of 9 validation samples are less than 0.1, prove that the validation results of these samples are closer to KCRV.

刘京儒, 高彩霞, 刘耀开, 赵永光, 马灵玲, 邱实, 李传荣, 唐伶俐, 钱永刚, 王宁. 光学载荷多场地地基综合验证定权方法[J]. 光学学报, 2020, 40(17): 1712002. Jingru Liu, Caixia Gao, Yaokai Liu, Yongguang Zhao, Lingling Ma, Shi Qiu, Chuanrong Li, Lingli Tang, Yonggang Qian, Ning Wang. Weight Determination Method for Multi-Site Ground Comprehensive Validation of Optical Sensors[J]. Acta Optica Sinica, 2020, 40(17): 1712002.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!