Simulation on Transmission Characteristics of Laser in Chaff Cloud Environment
The laser fuzes are easily affected by chaff clouds,but the interference characteristics of chaff clouds on laser have not been sufficiently studied,Therefore,a laser transmission characteristic model in the chaff cloud environment is established.The diffusion models of chaff clouds under no wind/wind conditions are developed,and the diffusion models of chaff clouds at stability stage under different environments are obtained.The similarity of the interference effects of main disturbing clouds of chaff cloud in the absence/possession of wind is determined based on the laser transmission characteristic models.The scattering characteristics of single chaff under different morphologies are studied based on Fresnel principle.The chaff cloud is segmented,and a propagation model of laser in chaff cloud environment is established by using the continuous field Monte Carlo radiation transfer model.In this propagation model,a laser echo model with or without target in the chaff cloud environment with different central concentrations can be obtained.The laser echo model is verified by comparing the simulated data with the measured data.It is concluded that the chaff cloud interference echo has the characteristics of narrow pulse width and high peak value,and the continuous frequency of chaff cloud interference echo is positively correlated with the concentration of chaff cloud.The laser echo model can provide support for research on anti-chaff cloud interference of laser fuze.
pulsed laserchaff cloudfresnel principlemonte carlo radiation transfer modelecho model
万方数据
维普
