三角夹差激光引信抗烟尘干扰

为提高激光引信在短距离内抗烟尘、云雾干扰的能力，通过脉冲激光发射、线阵传感器回收，利用三角夹差法定距，对回波信号中携带的距离信息进行分析提取烟尘背后的实体目标。三角夹差法的发射光轴与接收光轴设有一定夹角，使得在接收端视场内只接收到探测距离中一小段距离内烟雾的后向散射光，降低了烟尘后向散射带来的干扰。通过线阵传感器结合夹差法在接收回波时可以给出夹差区域所对应的目标距离信息值。实验表明，比起同轴探测系统，采用三角夹差线阵探测确实可以在更低能见度下正常工作，并且确实不会因烟尘而虚警，同时也使探测装置具有在一定范围内分档定距的功能。

Anti-Dust Interference by Triangulation Laser Fuze

In order to improve the ability of the laser fuze to resist the smoke and fog in the short distance, by using the pulse laser emission and the linear array sensor recovery and using triangulation fixed distance,we extracted the object behind dust by analysis the echo signal which carries the distance information.A certain angle was arranged between the transmitting optical axis and the receiving optical axis of the triangulation method,which makes the field only at the receiving end and receives the detection range within a short distance of dust in the backscatter light,and the interference from backward scattering of smoke has been reduced.The target distance information corresponding to the pinch region can be given by using the linear array sensor with the triangulation method. Experiments show that using the triangulation line array detection can work normally under the lower visibility than coaxial detection system,and do not give a false alarm from dust,and at the same time it also makes detection device have the step distance functions in a certain range.