多光束连续扫描卫星光通信捕获技术的系统容错性分析  

Analysis of Fault Tolerance of the Acquisition Technology Based on Beams Scanning of Laser Satellite Communication

作　　者：赵顾颢[1] 赵尚弘[1] 蒙文[1] 王翔[1] 朱子行[1] 陈晨 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077 [2]西安计量技术研究院,陕西西安710068

出　　处：《空军工程大学学报（自然科学版）》2011年第2期52-56,共5页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家"863"计划资助项目(2007AA01Z293)

摘　　要：多光束连续扫描卫星光通信捕获技术的系统误差主要出现在时间信息的反馈和探测部分。通过分析目标位置与圆心距离的计算公式,绘制出不同扫描位置探测概率随均方差和步进时长的变化趋势。从中得出的结论是,将目标卫星出现概率最大的区域安排在扫描轨迹中靠后的位置可以有效减少误差产生。对一个扫描周期内识别概率进行数值仿真表明,当系统对时间信息的探测精度要达到4×10-3s时,系统误差概率将小于1%。The systematical error of the multi-beam continuum scanning of laser satellite communication mainly arises from the time information feedback and detection part.By analyzing the formula for computing the distance between the target location and the scanning centre,the variation trend of the detection probabilities on different scanning locations with the trend of MSE and the step length is drawn.A conclusion is found that arranging the area of the largest probability of the target satellite appearing on the later position of the scanning tracks can reduce errors happening.The digital simulation of identification probability in a scanning cycle shows that when the system time detection precision reaches 4×10-3s,the error probability will be less than 1%.

关 键 词：卫星光通信 捕获 容错性 识别概率 

分 类 号：TN243[电子电信—物理电子学]