调频连续波激光引信回波特性仿真分析

doi:10.3969/j.issn.1000-1093.2015.12.006

摘要/Abstract

摘要： 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，但仍会受到云雾的影响，主要表现为后向散射回波引起虚警，同时云雾粒子的散射和吸收作用导致激光能量衰减。为研究FMCW激光引信的回波特性，基于激光探测原理和Mie散射理论，建立激光引信探测的蒙特卡洛仿真模型；在激光引信和目标均处于云雾中的情况下，对激光引信的回波进行仿真，得到了不同能见度下的FMCW激光引信回波信号，分析了云雾能见度对FMCW激光引信回波信号的影响。该仿真方法可应用于FMCW激光引信抗云雾干扰方面的参数优化设计。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，但仍会受到云雾的影响，主要表现为后向散射回波引起虚警，同时云雾粒子的散射和吸收作用导致激光能量衰减。为研究FMCW激光引信的回波特性，基于激光探测原理和Mie散射理论，建立激光引信探测的蒙特卡洛仿真模型；在激光引信和目标均处于云雾中的情况下，对激光引信的回波进行仿真，得到了不同能见度下的FMCW激光引信回波信号，分析了云雾能见度对FMCW激光引信回波信号的影响。该仿真方法可应用于FMCW激光引信抗云雾干扰方面的参数优化设计。

关键词: 兵器科学与技术, 调频连续波激光引信, 云雾, Mie散射, 蒙特卡洛

Abstract: 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. As the backscattering laser signals from cloud and fog may cause a false alarm and the laser power is attenuated by the scattering and absorption of the particles. In order to study the characteristics of echo for FMCW laser fuze, the Monte Carlo simulation model for FMCW laser fuze is built based on FMCW laser detection principle and Mie scattering theory. In the case of FMCW laser fuze and the target in the cloud and fog, the backscattering signals are simulated under the different visibility, and the influences of visibility in cloud and fog on FMCW laser fuze backscattering signals are analyzed. The proposed simulation method can be used to optimize the parameter of FMCW laser fuze for the improvement of the anti-interference ability.

Key words: ordnance science and technology, frequency modulated continuous wave laser fuze, cloud and fog, Mie scattering, Monte Carlo

中图分类号:

TJ43⁺9.2

陈慧敏，刘洋，朱雄伟，王凤杰. 调频连续波激光引信回波特性仿真分析[J]. 兵工学报, 2015, 36(12): 2247-2253.

CHEN Hui-min, LIU Yang, ZHU Xiong-wei, WANG Feng-jie. Simulation of the Characteristics of Backscattering Signals for Frequency Modulated Continuous Wave Laser Fuze[J]. Acta Armamentarii, 2015, 36(12): 2247-2253.

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