针对小口径弹药用脉冲激光周向探测系统的小体积和轻质量的设计难点，在全面分析脉冲激光周向探测系统的基础上，提出了采用激光发射系统解体分离技术和光学系统扁平化技术实现脉冲激光周向探测系统小型化的解决方案.将传统、较大尺寸、一体化结构的激光发射系统的激光器与激光器驱动电源进行结构分离，达到轴向尺寸压缩的目的，并利用灌封技术进行抗过载处理；选择平凸球面单透镜光学元件代替非球面透镜，经过理论计算和光学系统仿真，设计出扁平化激光准直系统，有效压缩轴向尺寸.针对结构小型化带来的空间电磁干扰问题，基于磁场屏蔽机理，采用特殊结构屏蔽体，有效抑制了电磁干扰.加工制作了原理样机并进行了目标探测试验.实验结果表明：样机能有效探测近程目标，且脉冲激光周向探测系统的有效尺寸显著减小，验证了小型化技术的可行性和实用性.

Aiming at design difficulty of small volume and light weight for small caliber ammunition with pulsed laser circumferential detection system, on the basis of comprehensive analysis of pulsed laser circumferential detection system, solution for the miniaturization of the laser circumferential detection system was proposed. It was realized by adopting the laser emission system disintegration separation technology and optical system flattening technique. The laser and laser drive power of traditional, larger size and integrated structure laser emission system were separated, which achieved the purpose of axial dimension compression. Anti-overload processing was realized by use of sealing technology. Flat convex spherical lens waa chosen instead of spherical lens.According to the derivation of theoretical formula and simulation of optical system, flat laser alignment system was designed, which can effectively compress the axial dimension. Aiming to space electromagnetic interference problems in miniaturization, special structure shield was used based on magnetic field shielding mechanism, which effectively suppress electromagnetic interference. The initial prototype was made and experiment of target detection was done. The results show that the prototype can measure short-range target efficiently and effective size of pulsed detection system was significantly deccreased, which can verify the feasibility and practicablilty of miniaturization technology.