基于机载激光通信的扫描捕获优化设计

Optimization Scheme of Scanning Acquisition Based on Airborne Laser Communication

摘要:

为适应机载激光通信的平台特殊情况，分析了各类扫描捕获方案并选取了最适合机载平台激光通信的方案；为避免光斑在边缘捕获容易丢失的情况，采用了设置进视场的方式对捕获的方法进行优化，为避免扫描捕获时间过长，采用了对扫描端分区分速的方法进行优化；经理论分析该方案使得光斑最终捕获的位置更加靠近视场中心，避免光斑因无人机振动等平台限制而出现光斑异常丢失的情况，且随着双端距离的不同以及光斑相对于不确定区域中心的距离差异最终扫描捕获时间优化效果呈现正相关，经实验测试该方案实现了一定程度的有益效果，可以在损失不超过15%时间的情况下避免光斑由于无人机抖动而意外丢失的情况，满足了实际情况下的应用需求。

Abstract:

In order to adapt to the special situation of airborne laser communication platform, various scanning acquisition schemes are analyzed and the most suitable scheme for airborne laser communication is selected. In order to avoid the loss of light spot at the edge of the capture, the method of setting the field of view is adopted to optimize the capture method. In order to avoid the long scanning capture time, the method of dividing the scanning speed is adopted to optimize the scanning end. Through theoretical analysis, the scheme makes the final location of spot capture closer to the center of the field of view, avoiding the abnormal loss of spot due to platform restrictions such as UAV vibration. Moreover, the optimization effect of the final scanning capture time presents a positive correlation with the difference of the distance between the two ends and the distance between the spot and the center of the uncertain area. The experimental test results show that the scheme can achieve a certain degree of beneficial effect, which can avoid the accidental loss of light spot due to the vibration of the UAV in the case of loss of no more than 15% of the time, and meet the actual application requirements.