提高卫星光通信扫描捕获概率的方法研究

被引:13
作者
于思源
马晶
谭立英
机构
[1] 哈尔滨工业大学可调谐激光技术国家级重点实验室
关键词
卫星光通信; 捕获扫描方式; 捕获概率; 误差不对称分布;
D O I
10.16136/j.joel.2005.01.015
中图分类号
TN929.13 [星际光通信];
学科分类号
摘要
在相同的外部环境和系统参数条件下,捕获扫描方式的选择直接影响卫星间光通信终端的捕获性能。粗瞄误差是确定捕获扫描方案过程中的首要考虑因素,通常假设为水平俯仰对称高斯分布,这时螺旋扫描为最佳扫描方式。在实际卫星平台姿态控制过程中,姿态误差在各个转动轴方向上的分布一般是不对称的,进而造成粗瞄误差分布的不对称,仍采用螺旋方式扫描可能效率较低。因此,通过理论分析和MonteCarlo仿真重新分析了捕获扫描方式的选择问题,提出了针对具体星上环境条件采用不同扫描方式的新结论。在卫星光通信的链路建立过程中,粗瞄误差不对称度较高时,同样的扫描时间限制内分行扫描可以获得更高的捕获概率。
引用
收藏
页码:57 / 62
页数:6
相关论文
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