摘要
针对天基低轨预警系统主要任务是对导弹目标的中段进行探测和跟踪,研究了低轨凝视型传感器空间覆盖问题。首先根据凝视传感器作用距离和光轴转向建立了不同高度下凝视传感器覆盖模型;然后针对网格分析方法的不足,改进了网格划分规则,推导了在不同纬度下网格划分的经度间隔、纬度间隔、网格划分精度之间的函数关系,基于典型覆盖性能指标提出了空间覆盖分析和计算流程;最后通过仿真得出星座对特定空间的覆盖特性,结果证明了空间覆盖模型和改进的网格点仿真方法的有效性。
The main mission of early warning system of LEO is to detect and track the midcourse missile, so the problem of the staring sensors coverage of LEO is researched in the article. Firstly, the models of staring sensors in different space altitudes are built based on their operating range and turning of lens. Secondly, according to the limitation of the grid analysis method, the rule of grid partition is improved and the function relation of the latitude and longitude alternation, the grid precision of grid partition in the different latitudes is set up, the computing process of coverage analysis is put forward based on the coverage performance of a typical constellation is educed models and the improved grid method are available and typical coverage performance index. Finally, some space through effective. simulation, and the result shows that the coverage
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2012年第3期35-39,共5页
Journal of Air Force Engineering University(Natural Science Edition)
关键词
低轨预警系统
凝视传感器
覆盖性能
网格点仿真
early warning system of LEO
staring sensor
coverage performance
grid simulation
