小型化激光近炸引信技术研究

Research on Miniaturization of Laser Proximity Fuze

小型化是激光近炸引信的关键技术和发展趋势。从激光近炸引信的工作原理出发,分别从引信体制选择、光电探测器选取、光学结构、电路系统4个方面研究了小型化的设计要求并提出了设计方案:采用距离选通与脉冲激光测距相结合的定距体制、雪崩光电二极管光电探测、接收光学系统内嵌发射光学系统的光学结构以及基于ARM核微控制器和时间数字转换器的电路系统。将设计方案付诸实施,静态实验测试结果表明:系统具备小尺寸、低功耗、高精度、一定抗干扰能力的特性,符合激光近炸引信的小型化设计需求。

Miniaturization is the key technology and development trend of laser proximity fuze. Based on the operating principle of laser proximity fuze, the miniaturized design requirements were discussed, ineluding fuze system, photodetector selection, optical structure and electrical system, and the design solutions were presented： fuze system which initiates at a fixed distance based on range gating and pulsed laser rangefinding, avalanche photodiode（APD） signal detecting, optical structure of which a transmission optical system is integrated in a receiving optical system, and circuitry based on ARM core MCU and time-to-digital converter（TDC）. The design was put into practice. The static experimental results show that the fuze system has small size, low power consumption, high precision and anti-interference capability, and can meet the miniaturized design requirements of laser proximity fuze.