成像型激光探测系统作用距离研究

作用距离是激光探测系统设计首要考虑的内容。以成像型激光探测系统为技术背景，分析了激光在大气中的传输效应，得出了光束传输与大气参量如大气能见度和折射率结构常数的关系式。进而考虑大气闪烁对激光瞬时分布的影响，综合孔径平均效应推导出了系统在一定探测概率时，用最小探测功率或最小照度表示的作用距离模型。并结合典型实例，数值模拟了接收功率与探测距离的定量关系。计算结果表明，灵敏度为毫瓦每平方厘米级的激光能够探测到一般战术情况下经过接收器平台附近的激光信号，从而为系统设计和研制提供了理论依据。

Research on the Operating Range of Imaging Type Laser Detecting System

Operating rang is the chief content calculated in the design of laser detection system.Based on the technology of imaging laser detecting system,the relationship between the laser propagation and atmospheric parameters like visibility and refractive index structure constant was discussed while analyzing laser propagation effects in atmosphere.Taking optical scintillation and aperture averaging into account,the operating range model shown by minimum detection power or illumination was discussed while specific detection possibility.The quantitative relation between received power and detection distance was studied with numerical simulation algorithm with typical instance.The calculation results show that the vehicular laser warning device of several mille watts per square centimeter insensitivity can detect laser signal of target reflection and atmospheric dispersion in common tactics circumstance,which can provide a guideline for the development and design of the system.