地基光电望远镜对空间碎片探测能力的评估模型

发布时间：2018-02-28 03:17

本文关键词： 空间碎片光电望远镜探测能力评估信号辐射量探测信噪比　出处：《光子学报》2016年10期 　论文类型：期刊论文

【摘要】：为了提高地基光电望远镜观测空间碎片的运行效率,建立了地基光电望远镜探测能力评估仿真模型.综合考虑碎片几何过境、碎片信号辐射量、背景源信号辐射量、光信号在传感器平面的投影等影响,获得碎片信号的探测信噪比,并作为过境碎片能否被探测到的依据.采用1m望远镜进行地球同步轨道碎片观测实验,并对模型进行验证.结果表明:仿真观测的第谷2星表中4颗背景亮星与观测实验结果一致;由于碎片形状等光学特性不同,碎片辐射量星等值的实验值与仿真值最大相差1.58倍,误差值在合理范围内.基于信噪比探测原理的地基光电望远镜探测能力评估仿真模型合理有效,可为观测设备建设、观测策略制定等提供参考.
[Abstract]:In order to improve the operational efficiency of ground-based photoelectric telescope in observing space debris, a simulation model for evaluating the detection capability of ground-based photoelectric telescope is established. The geometric transit of debris, the amount of radiation of debris signal and the amount of radiation of background source signal are considered synthetically. The signal to noise ratio (SNR) of the debris signal is obtained by the projection of the optical signal in the plane of the sensor, and as the basis of whether the debris can be detected in transit, the geostationary orbit debris observation experiment is carried out by using the 1m telescope. The model is verified. The results show that the four background bright stars in the Glen 2 catalogue are consistent with the experimental results, because of the different optical properties, such as the shape of the fragments, and so on. The difference between the experimental value and the simulation value is 1.58 times, and the error is within a reasonable range. The simulation model based on the principle of signal-to-noise ratio (SNR) detection for ground-based photoelectric telescope detection is reasonable and effective, which can be used for the construction of observation equipment. The establishment of observation strategy provides reference.
【作者单位】：中国科学院国家天文台;中国科学院大学;
【基金】：国家自然科学基金青年科学基金(No.11503044)资助~~
【分类号】：P111.2

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