利用激光对无人机探测定位的可行性研究

Feasibility study on detection and orientation of unmanned aerial vehicles by laser

  • 摘要: 为了对空中无人机实施有效反侦察,分析了激光探测系统对无人机进行有效监测的可行性;建立了激光发射接收系统和无人机上光电成像系统的模型;仿真了无人机成像镜头的镜面散射光特性以及焦平面反射光特性。以无人机位于10×103m的高度为例,分析了2种反射光下探测系统应用的可行性,分别得出其可用的探测激光入射角范围、探测系统光敏面上的光强分布特性和探测激光进行动态扫描时的回光变化特性。结果表明:无人机上成像镜头的焦平面反射光强度比镜面散射光强度要高很多,且有很好的原路返回特性;在无人机成像系统视场覆盖范围之内,利用焦平面反射光可以对无人机目标进行有效探测及定位。

     

    Abstract: In order to implement the effective anti-reconnaissance to unmanned aerial vehicles (UAV), the feasibility of effective monitor for UAV by a laser detecting system was analyzed, the model of laser transmittingreceiving system and optoelectronic imaging system of UAV was established, and the characteristics of specular scattering light of the UAV imaging lens and reflecting light of focal plane were simulated. Taking a UAV at the altitude of 10,000m as an example, the application feasibility of the detecting system with two kinds of reflecting light was analyzed, and the available incident angle range of laser detection was obtained. The characteristics of light distribution on the photosensitive face of the detecting system and reflecting light change when the detecting laser was dynamically scanning were analyzed. The results show that the intensity of the focal plane reflecting light from imaging lens is much higher than that of the specular scattering light, and it has a very good characteristic of returning to the original path. And also it can detect and locate the target (UAV) by the aid of the reflecting light from the focal plane at the FOV coverage range of the imaging system on UAV.

     

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