光学遥感器星上定标米散射板特性测量与分析

曹兴家; 司孝龙; 施家定; 陈洪耀; 黄文薪; 杜志强; 刘辉; 徐伟伟; 李鑫; 张黎明

doi:doi:1673-6141(2016)02-0134-09

大气与环境光学学报, 2016, 11 (2): 134, 网络出版: 2016-03-29

光学遥感器星上定标米散射板特性测量与分析

Characteristic Measurement and Analysis of Mie Scattering Diffuser Used for On-Board Calibration for Satellite Optical Sensors

论文大纲

曹兴家 ^*司孝龙施家定陈洪耀黄文薪杜志强刘辉徐伟伟李鑫张黎明

作者单位

中国科学院安徽光学精密机械研究所中国科学院通用光学定标与表征技术重点实验室, 安徽合肥 230031

摘要

为了考察米散射板光学、物理性能以及空间环境适应性,对米散射板的方向半球反射比(DHR)、双向反射分布函数(BRDF)、电阻率等进行了测量和标定,并对其做了系列空间环境试验。结果表明:米散射板在350～2000 nm波段反射率大于80%,光谱反射率每100 nm差异小于0.024,表现出较好的光谱平坦性;当光源以天顶角10°～75°照明,并0°探测时, 900 nm波段BRDF平均每度变化小于5.2×10-4, 表现出很好的朗伯性;经检测电阻率≤1012{\\mkern 1mu}Ω·cm,低电阻率可大幅度降低在轨航天环境静电充放电风险;空间环境辐照试验表明, 米散射板具有很好的空间环境稳定性。综上所述,米散射板能够满足静止轨道光学遥感器星上定标需要。

Abstract

In order to investigate the optical and physical properties and stability of the Mie scattering diffuser(MSD) in spatial environment, some reflective properties including the directional hemisphere reflectance (DHR), the bidirectional reflectance distribution function (BRDF) and the resistivity were measured. The results show that the reflectance achieves 80% at the band of 350～2000 nm, the differences of the reflectance is less than 0.024 per hundred nm. The variations rate of BRDF(10°～75°) is less than 5.2×10－4 at the band of 900 nm. The resistivity of MSD is about 1012{\\mkern 1mu}Ω·cm, it reduces the internal charging hazards to a great extent in the space. The experiment of radiation test shows that the MSD has the characteristic of stability of orbit radiation. Therefore, MSD can satisfy the requirements for space applications of use of the geosychronous orbit satellites.

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曹兴家, 司孝龙, 施家定, 陈洪耀, 黄文薪, 杜志强, 刘辉, 徐伟伟, 李鑫, 张黎明. 光学遥感器星上定标米散射板特性测量与分析[J]. 大气与环境光学学报, 2016, 11(2): 134. CAO Xingjia, SI Xiaolong, SHI Jiading, CHEN Hongyao, HUANG Wenxin, DU Zhiqiang, LIU Hui, XU Weiwei, LI Xin, ZHANG Liming. Characteristic Measurement and Analysis of Mie Scattering Diffuser Used for On-Board Calibration for Satellite Optical Sensors[J]. Journal of Atmospheric and Environmental Optics, 2016, 11(2): 134.

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