强背景下光电系统空间目标探测能力

光电系统可见光探测在空间目标监测中发挥着重要作用，而强背景下空间目标探测一直是限制光电探测设备能力的瓶颈；为了提高光电系统实际探测能力，从系统探测能力表征参数-信噪比入手，分析了系统探测信噪比的理论公式和选择原则；针对强背景对光电系统探测信噪比的影响，分析给出了不同光谱滤波方式对光电系统探测信噪比的影响程度； 分析了不同布站方式对系统探测能力的影响，并开展了实际观测测量。理论分析表明，采用合适的光谱滤波技术可有效提高光电系统的探测能力，系统探测信噪比提高1 倍；通过合理布设光电系统的观测站点，使得光电系统对空间目标的探测能力显著提高，对目标的可探测概率从51%提高到96%，理论分析与实验观测结果基本一致。

Electro-optic system detection ability to space-object in strong background

Visible light imaging detection of electro-optic (EO) system plays a key role in space-object detection. How to detect space-object in strong background luminance has always been a choke point in limiting EO system's detection ability. The primary specification for expressing detection ability is signal- to-noise ratio(SNR). Based on analysis of the effect factors, a calculation formula of detection ability and the fundamental of detection probability were derived. The influence of the sky strong background luminance on the detection ability was analyzed, and the SNR of EO system versus spectral filtering mode and different observation stations were given in the paper. The theoretical results show that the detection ability of EO system can be improved, increased by 100 percent, through the propriety spectral filtering technology. The detection probability is increased by 45 percent (from 51 percent to 96 percent) through changing the observation station of EO system. Theoretical results fit with the experimental research.