无人机数据链仿真测试平台构建技术的研究

针对通常采用飞行试验或野外拉距离试验仿真所具有的试验周期长,可重复性难,数据提取困难和试验成本高的特点,提出一种在暗室实现无人机数据链拉距离半实物仿真平台的构建方法,分析并构建了空间自然衰落,大气环境,飞机飞行姿态角等影响信号传输和接收的模型,同时采用了暗室链路标校的方法消除仿真试验条件,暗室试验环境对仿真结果带来的误差影响。仿真结果表明,理论计算功率和实际接收功率曲线趋势是一致的,从而验证了平台的有效性。

Investigation on Construction of Simulator and Test Platform for UAV Data-rink

Because of the features that were long experience period, poor repeatability, extracting data difficulty and high cost of experimentation by adopting flight test and "pull distance" in the field, the method of building a hardware in the loop simulation platform for testing UAV date-link in the darkroom was put forwarded. The models of flee-space attenuation, atmospheric environment and the airplane flight attitude were analyzed and constructed, which influenced the signal's sending and receiving. To eliminate the error caused by simulation condition and experiment environment, a method of calibrate-link was utilized. The result shows that the curve of theory calculating power and actual receiving power is consistent, and the platform's effective is validated.