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近年来,越来越多的输电线路穿越易引发山火的山林地带,严重威胁到输电线路和电网的安全稳定运行。为了给输电线路的安全运行和维护提供及时有效的决策信息,在了解现有的山火监测技术的基础上,提出了激光雷达应用于山火监测的新技术,并通过模拟试验验证了基于激光雷达技术监测山火的有效性和可行性。试验结果表明,当激光在无明显障碍物的空气介质中传播时,其后向散射很微弱,空气介质对激光信号的衰减也很小。而当其在传播过程中遇到烟雾气溶胶介质时,会在介质表面发生强烈的后向散射,激光信号的衰减程度会增大。试验结论可作为激光雷达技术监测山火的有效判据,对山火的预警具有很高的参考价值。
In recent years, more and more transmission lines have penetrated the mountainous areas prone to mountain fires, which threaten the safe and stable operation of transmission lines and power grids. In order to provide timely and effective decision-making information for the safe operation and maintenance of power transmission line, based on the understanding of the existing mountain fire monitoring technology, a new technique of laser radar for mountain fire monitoring is proposed. The simulation experiments show that the laser- Radar Technology to Monitor the Effectiveness and Feasibility of Mountain Fire. The experimental results show that the backscattering is very weak when the laser propagates in the air without obvious obstacles, and the attenuation of the laser signal by the air medium is also small. When it encounters smoke aerosol medium in the process of propagation, strong backscattering occurs on the surface of the medium and the attenuation of the laser signal will increase. The conclusion of the experiment can be used as the effective criterion for monitoring mountain fire by laser radar technology, which has a high reference value for the warning of mountain fire.