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地基红外探测系统作用距离研究
投稿时间:2009-03-24  最后修改时间:2009-04-03  点此下载全文
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作者单位E-mail
薛丰廷 中国科学院上海技术物理所 xft_7912@163.com 
基金项目:中国科学院知识创新项目
中文摘要:从红外辐射学的原理出发,根据空间目标的特征和环境,首先计算了空间目标在中波和长波段的辐射强度。然后分析了大气透过率对目标作用距离的影响,估算出了地基红外探测系统对空间目标进行探测的作用距离。最后通过与外场实验数据结果的对比,视距大约为757km的卫星, 其表面温度为290K左右,证明了针对空间目标红外辐射的分析方法是正确的,因此也证明了地基红外探测系统具备探测中低轨道空间目标的能力。
中文关键词:作用距离  红外辐射强度  大气透过率  空间目标
 
Study on detecting range of ground-based IR detector
Abstract:Based on the basic principles of infrared radiation, the radiant intensity of space target in medium wave and long wave are calculated, considering the space target’s special characteristics and the environment which the space target is embedded in. Then the relation between atmospheric transmittance and target distance is discussed. So the detecting range of ground-based IR detector is estimated. At last, through the contrast with the data getting from the experiment, it shows that the surface temperature of a satellite is about 290K in a 757km orbit, and it proves that the study method on the IR characteristic of a space target is absolutely right. It also proves that the ground-based IR detector could have the ability to detect the space target in a low or medium global orbit.
keywords:detecting range  infrared radiation intensity  atmospheric transmittance  space target
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