基于双色探测的激光引信抗干扰方法

摘要

In view of the problem that laser fuze was liable to be interfered by fog and smoke,a method of anti-interference based on dual-wavelength detection was proposed in this paper.Dual-wavelength laser was used in target detection in this method.By calculating the backscattering power ratio,the detection and identification of target and interference could be realized.The analytic and experimental results showed that the scattering char-acteristic of fog and smoke particles to dual-wavelength laser were different,while the ratio of backscattering power was usually more than 2.The reflectivity of targets to dual-wavelength laser was nearly the same,while the ratio of reflected power was about 1.%针对激光引信容易受云、烟雾干扰的问题，提出基于双色探测的激光引信抗干扰方法。该方法采用两种不同波长的激光探测目标，并通过计算双色激光的散射回波比，实现对目标与干扰的探测与识别。理论分析与实验结果表明：双色激光在云、烟雾干扰下的散射回波具有较大差异性，其后向散射回波比通常大于2；而实体目标对双色激光的散射没有选择性，其后向散射回波比接近于1。在引信信号处理中利用散射回波比信息为激光引信抗干扰开辟了一条全新的道路。