基于PSD的无人机瞄准精度检测方法研究

Research of Detection Method with PSD on Aiming Accuracy of Unmanned Aerial Vehicles

针对无人机在战场上的大量应用,为了进一步提高其在攻击目标时的瞄准精度,改善作战效能,提出了一种以PSD位置传感器为检测平台的用来验证无人机瞄准是否精确的方法。建立了等效于PSD的电阻电容网络,并根据相关的电路知识,推导了与之配套的数学公式,并利用数学软件对该数学模型进行了模拟,从中发现PSD电极输出信号的相位差与入射光斑位置存在近似的线性关系,通过实验研究结果表明,采用检测相位差信息来检测光斑位置的方法能够满足无人机瞄准精度检测的要求。并且信号处理的电路条理比较清晰,可以根据需要随时做出修改,使得系统的实用性有了一定的提高。

As unmanned planes have enjoyed a wide application in battlefields, in order to improve their accuracy in hitting targets, as well as the operational effectiveness, this thesis puts forward an accuracy-inspecting method with PSD position sensor as its detecting platform. The authors establish a resistance capacitance network equal to PSD, derive corresponding mathematic formulas according to relevant circuit knowledge, and conduct simulations of the formulas with mathematic software, among which, the theory that there is a similar linear relation between phase difference of output signals and positions of light spots. The experiment shows that the position-detecting method of light spots based on phase differences can meet the needs of accuracy-inspecting of unmanned plane aiming systems. As the circuits used to deal with signals are quite structured, we can modify at any time, and improve the system practicability.