中文摘要：

在详细分析基本探测效果评价指标参数、点目标评价参数以及面目标评价参数的基础上,结合临近空间低速目标的光学特性,利用光学谱段分段方法,有效解决了目标背景受白天与黑夜的影响。结合光学探测器的谱段约束条件、位置约束条件、探测能力约束条件和可探测性评估参数,设计提出了临近空间低速目标光学可探测性指标评价体系并给出评价标准与优化方案。通过数值模拟得到单个和多个探测器不同探测效果的等效面,得出当目标位于期望探测效果等效探测曲面内部时,探测效果优于期望,满足探测要求;反之,探测效果劣于期望,不能满足探测要求,可以通过修改探测方案满足探测需求。这一结果证明了临近空间低速目标光学探测性指标评价体系的有效性。

英文摘要：

On the basis of the detailed analysis of the basic detection evaluation parameters, point target evaluation paramenters and area target evaluation parameters, this paper effectively resolves the limitations of the day and night backgrounds by the optical spectral segment selecting according to the optical properties of the low speed target in the near space, and designs a near space low speed target detectability evaluation system and optimization scheme based on optical method. Moreover, in consideration of the spectal constraint condition the position constraint condition, the detection ability and the evaluation parameters of the optical detector in detailed through different equivalent effect curve surface of single and multiple detectors by numerical, the simulation result indicates that when the target is inside the equivalent curve surface, the detecting effect is better than that of the expectation and can meet needs of the detection requirements, on the contrary, the detection effect is worse than that of the expectation and cannot meet needs of the detection requirements, unless the detection scheme is modified. The results show that the near space low target detectale evaluation system is effective based on optical method.