轻小型光子计数激光测距技术

为实现轻小型光子计数测距仪，利用905nm激光二极管（LD）以及硅基单光子探测器（SPAD）搭建了试验系统，通过外场测距试验研究了905nm激光二极管用于光子计数测距的测距性能。结果表明：905nm激光二极管由于其具有体积小、功率高的特点，同时硅基单光子探测器在905nm波段具有较高的响应率，基于以上两点，通过激光二极管以及小口径的接收望远镜能够实现远距离的光子计数激光测距。可见，激光二极管适合作为轻小型光子计数激光测距仪的光源，降低了系统的体积，有利于提高测距系统的集成度。

Research of Light Photon-counting Laser Ranging Technology

In order to realize the light and small photon counting rangefinder, a 905nm laser diode and a Si-based single photon avalanche diode were used to build the laser ranger system. An outside experiment was designed to investigate the performance of the rangefinder. The results show that it is possible to use laser diode and Si-based single photon avalanche diode to realize a light and small long-range rangefinder with small-aperture telescope. The high power of the laser diode and the high response of Si based single photon avalanche diode at 905nm increase the detection efficiency. It is concluded that laser diode is suitable for a long-range photon-counting rangefinder. The laser diode reduces the volume of the system and is benefit for the integration of the system.