采用双色技术的激光引信抗干扰技术

Dual-wave technology used in laser-fuse anti-interfere

激光引信由于其性能优良获得了广泛的应用,但其自身也有对烟雾干扰敏感的不足,为了解决激光引信抗烟雾干扰的问题,在介绍引信工作原理的基础上,提出了一种新的、能够应用于引信抗烟雾干扰分析的双色技术。基于瑞利散射和米散射的分析,计算了不同烟雾环境下的紫外、红外双波长激光的散射比,结果表明:该比率在探测到目标时差异不明显,但在烟雾环境下常常大于2。结合理论分析,设计了一套验证系统,给出了其系统组成和测试方法,并给出了测试结果曲线,其实际比率大于3。双色比的理论可实现性和实验数据分析结果表明:应用双波长激光对烟雾散射的差异,可以确认该双色技术可应用于激光引信抗干扰,在烟雾浓度大时尤为有效。该方法同样适用于其他相关光学探测系统抗烟雾干扰。

Laser fuse is widely used for its excellent performance,but its also has shortage in anti-interferences of fog and aerosols.In order to solve this problem,a dual-wavelength technology used in anti-interferences for long range and short distance detection was presented based on the principle of laser fuse.The scattering character of the special fog and aerosols environment was calculated by using the Rayleigh scattering method and Mie scattering method.The scattering characters in different environment were analyzed by using ultraviolet and infrared wave band.The results indicate that the ratio of proportion-discrimination in fog and aerosols environment is usually greater than 2.This method was also validated by experiment.Based on the full system,the dual-wavelength technology can be well applied.The result of the experiments also proves that the technology is efficient,especially in the heavy fog and aerosols environment.The method can also be used in anti-interfere for long range detection.