GPS/INS技术在静态激光通信初始捕获中的应用

为了实现水平远距离大气无线激光通信链路快速建立,并快速获得捕获不确定区域的大小,采用了GPS/INS组合导航系统来完成静态水平链路无线激光通信初始捕获的对准定位,同时对该系统的对准算法进行了研究并优化。首先,分析了GPS/INS工作原理,根据捕获过程,提出针对该过程的捕获模型,并且分析了该模型的可行性。接着,针对该模型提出相应的静态初始对准算法。然后,通过该算法进行了外场实验。最后,根据实验结果校正捕获模型与其算法,经实验获得了捕获不确定区域的大小为27 mrad。基本满足10 km水平链路大气无线激光通信初始捕获的基本要求,其特点为捕获速度较快,其捕获速度优于10 s,基本不受天气影响。

Application of GPS/INS technology in the initial capture of static laser communication

In order to build rapid atmospheric wireless laser communication links and quickly obtain the size of uncertain capture area,GPS/INS integrated navigation system was used to complete the alignment positioning,meanwhile the alignment algorithm of this system was studied and optimized.Firstly,the working principle of GPS/INS was analyzed,the model was proposed according to capture procession,and the feasibility of the model was analyzed.Then,static initial alignment algorithm of the model was proposed.Finally,field experiment was carried out according to this algorithm.Based on the experimental results,capture model and its algorithm were calibrated,and the size of the uncertainty area was 27 mrad,which basically meets the requirements of atmospheric Wireless Laser communication of 10 km horizontal link.The capture time is less than 10 s,and it′s independent of weather.