基于改进高速单光子探测器的复合跟踪控制系统设计

由于半导体红外、光电倍增管单光子探测器受到噪声数据的影响，使得光子计数统计结果不精准，导致应用跟踪系统后，存在控制效果差的问题；利用雪崩光电二极管探测入射光和雪崩现象，改进高速单光子探测器；通过反馈控制环节实现猝灭，终止雪崩，将电压恢复到偏置电压；利用改进后的探测器设计单光子探测信号检测电路，获得所需要的基准电平，完成复合跟踪控制系统的硬件结构设计；设计信号传输计数控制流程，并结合判别公式确定高速单光子探测器与单个因素跟踪度；调节单光子探测器发射触发信号，根据所得到的信号确定组合跟踪脉冲光子数，以此为依据调整跟踪方案，完成系统软件结构设计；实验结果表明，改进后的高速单光子探测器在复合跟踪控制系统应用中，在38.5 ns时计数达到220个，与实际结果一致，具有较好的跟踪控制效果。

Design of compound tracking control system based on improved high speed single photon detector

Because the semiconductor infrared and photomultiplier tube single photon detectors are affected by noise data, the photon counting statistical results are inaccurate, resulting in poor control effect after the application of the tracking system. Using avalanche photodiode to detect incident light and avalanche phenomenon, the high-speed single photon detector is improved. Through the feedback control part, the quenching is realized, the avalanche is terminated, and the voltage is restored to the bias voltage. Using the improved detector to design the single photon detection signal detection circuit, the required reference level is obtained, and the hardware structure of the composite tracking control system is designed. The counting control flow of signal transmission is designed, and the tracking degree of high-speed single photon detector and single factor is determined by combining the discrimination formula. Adjust the trigger signal emitted by the single photon detector, determine the photon number of the combined tracking pulse according to the obtained signal, adjust the tracking scheme based on this, and complete the system software structure design. The experimental results show that the improved high-speed single photon detector achieves 220 counts at 38.5ns, which is consistent with the actual results and has a good tracking control effect.