中文摘要：

厘米级空间碎片激光探测技术逐渐成为研究热点。利用天基平台搭载激光探测系统,建立了激光探测空间碎片基本模型,通过选择特定波长激光、天基平台轨道及探测器定位方式,将背景噪声的影响降低在可实现单次探测成功的范围内;研究了探测距离、碎片尺寸随系统探测概率的变化规律,以及可实现的最小探测功率和最远探测距离;通过改变空间碎片直径与发射激光平均功率,研究其对探测距离的影响。研究表明,在现有条件下,通过对环境噪声的过滤与天基平台轨道的选择,可实现50 km处厘米级空间碎片的天基激光探测,而探测概率可达90%以上。通过上述基本问题的研究,为进一步实现空间碎片天基激光探测系统全过程仿真分析及清除过程建模仿真研究奠定基础。

英文摘要：

Using the way of laser in centimeter orbital debris detection has been the hot research topic.According to space based laser detection system, a basic model of centimeter orbital debris detection was established, with selecting a particular wavelength laser, space-based platform orbital parameter and position mode of detector to reduce background noise realizing once successful detection. The relationship between the detection range, the size of debris and detection probability, the minimum detection power and the furthest distance of the system was discussed. By changing the diameter of orbital debris and laser average power, the study of effect on detection range was discussed in detail. The researches show that under the existing conditions, it can be realized that 50 km distance detection of centimeter space debris with exceeding 90% detection probability, through the filtering of environment noise and selecting of space-based platform parameter. Based on above discussion, it can provide solid basis for the future modeling and simulation research of space based laser centimeter orbital debris detection and removal.