调频连续波激光引信云雾回波特性仿真
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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 transmittingreceiving 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.
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 transmittingreceiving 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.
引文
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[7] Wang Fengjie, Chen Huimin. Simulation of the characteristics of cloud and fog echo for pluse laser fuze[J]. Optics and Precision Engineering, 2015, 23(10):1-7.(in Chinese)王凤杰,陈慧敏.脉冲激光引信云雾回波特性仿真[J].光学精密工程, 2015, 23(10):1-7.
[8] Liu Kai, Cui Zhanzhong. Influence of atmospheric aerosol single backscattering on waveform of target-reflected signal in incoherent frequency-modulation continuous-wave shortdistance laser detection[J]. Optical Engineering, 2011, 50(1):014301.
[9] Chen Huimin, Liu Yang, Zhu Xiongwei, et al. Simulation of the characteristics of backscattering signals for frequency modulated continuous wave laser fuze[J]. Acta Armamentarii, 2015, 36(12):2247-2253.(in Chinese)陈慧敏,刘洋,朱雄伟,等.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.
[10] Chen Huimin, Gao Zhilin, Zhu Xiongwei. Method of frequency modulated continuous wave laser modulation[J].Infrared and Laser Engineering, 2015, 44(6):1762-1765.(in Chinese)陈慧敏,高志林,朱雄伟.调频连续波激光调制方法研究[J].红外与激光工程, 2015, 44(6):1762-1765.
[2] Yang Yufeng, Li Ting, Li Jianxun, et al. Study on scattering characteristics of sand and dust in the infrared waveband commonly used in FSO[J]. Infrared and Laser Engineering,2017, 46(6):0604004.(in Chinese)杨玉峰,李挺,李建勋,等.沙尘在FSO常用红外波段的散射特性研究[J].红外与激光工程, 2017, 46(6):0604004.
[3] Shen Na, Zhang Xiangjin, Guo Jing. Attenuation of laser fuse through fog[J]. Optics and Precision Engineering,2013, 21(4):864-869.(in Chinese)沈娜,张祥金,郭靖.水雾对激光引信的衰减[J].光学精密工程, 2013, 21(4):864-869.
[4] Wang Guangsheng. Characteristics and discrimination of cloud backscatter for laser fuze[J]. Journal of Detection&Control, 2006, 28(6):20-24.(in Chinese)王广生.激光引信云雾后向散射的特征与识别[J].探测与控制学报, 2006, 28(6):20-24.
[5] Zhang Jingguo, Liang Xiaogeng, Liu Jianxin, et al. Cloud and fog backscattering laser signal affected by baseline distance[J]. Journal of Detection&Control, 2012, 34(6):1-5.(in Chinese)张京国,梁晓庚,刘建新,等.激光引信收发间距对云雾回波的影响[J].探测与控制学报, 2012, 34(6):1-5.
[6] Zhang Jingguo, Liang Xiaogeng, Liu Jianxin, et al. Effect of pulse width on cloud-and-fog backscattering signal[J]. Acta Photonica Sinica, 2012, 41(12):1421-1426.(in Chinese)张京国,梁晓庚,刘建新,等.脉冲宽度对云雾回波的影响研究[J].光子学报, 2012, 41(12):1421-1426.
[7] Wang Fengjie, Chen Huimin. Simulation of the characteristics of cloud and fog echo for pluse laser fuze[J]. Optics and Precision Engineering, 2015, 23(10):1-7.(in Chinese)王凤杰,陈慧敏.脉冲激光引信云雾回波特性仿真[J].光学精密工程, 2015, 23(10):1-7.
[8] Liu Kai, Cui Zhanzhong. Influence of atmospheric aerosol single backscattering on waveform of target-reflected signal in incoherent frequency-modulation continuous-wave shortdistance laser detection[J]. Optical Engineering, 2011, 50(1):014301.
[9] Chen Huimin, Liu Yang, Zhu Xiongwei, et al. Simulation of the characteristics of backscattering signals for frequency modulated continuous wave laser fuze[J]. Acta Armamentarii, 2015, 36(12):2247-2253.(in Chinese)陈慧敏,刘洋,朱雄伟,等.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.
[10] Chen Huimin, Gao Zhilin, Zhu Xiongwei. Method of frequency modulated continuous wave laser modulation[J].Infrared and Laser Engineering, 2015, 44(6):1762-1765.(in Chinese)陈慧敏,高志林,朱雄伟.调频连续波激光调制方法研究[J].红外与激光工程, 2015, 44(6):1762-1765.