调频连续波(FMCW)激光引信相比于脉冲激光引信具有较强的抗干扰能力, 但仍会受到云雾的干扰。为研究FMCW激光引信系统参数对云雾回波特性的影响, 利用FMCW激光引信探测模型, 对激光引信在不同收发间距、激光波长以及相对云雾位置条件下的云雾回波特性进行仿真。仿真结果表明: FMCW激光引信的收发间距和激光波长会对云雾回波特性产生明显影响, 收发间距越大, 在可见光波段和近红外波段的激光波长越短, 云雾后向散射越弱。所得的仿真结果可为FMCW激光引信抗云雾干扰方面的优化设计提供参考。

Frequency Modulated Continuous Wave (FMCW) laser fuze has better resistance to interference than the pulse laser fuze, but it is still affected by cloud and fog. In order to study the influence of FMCW laser fuze parameters on the cloud and fog echo, the cloud and fog echo of FMCW laser fuze in the case of different transmitting-receiving distances, laser wavelengths and relative positions was simulated by using FMCW laser fuze detection model. The simulation results show that transmitting-receiving distance and laser wavelength of FMCW laser fuze have obvious effect on the cloud and fog echo, the greater of transmitting-receiving distance and the shorter of laser wavelength in the visible light and near-infrared band, the weaker of cloud and fog echo. The simulation results of this paper can be used to optimize the design of FMCW laser fuze for the improvement of anti-interference ability.