机场跑道临时关闭警示装置可见性计算研究  

Visibility calculation research on lighted visual aid to indicate temporary runway closure

作　　者：侯启真[1] 李琪[1] 刘衍帆 朱根武 

机构地区：[1]中国民航大学航空自动化学院,天津300300 [2]山东中烟工业有限责任公司,山东枣庄277500

出　　处：《应用光学》2015年第6期931-936,共6页Journal of Applied Optics

基　　金：民航局安全能力建设基金(FDSA0715);中央高校基本科研业务费资助项目(SY-1420)

摘　　要：为了快速得到机场跑道临时关闭警示装置整体光强的准确值和该装置可见距离与空气浑浊度T的关系。提出了利用虚拟点计算装置整体光强的方法,得到了装置的整体光强。相对于叠加得到装置整体光强值的方法,该方法提高了计算的准确性。然后根据Rayleigh散射和Mie散射公式建立了空气浑浊度T与跑道视程(RVR)的关系,并修正了点光源视距公式。修正后的公式考虑的入射光波长的影响并与RVR联系起来,使公式更具有实际意义。通过计算可知,在满足机场最低运行标准的情况下,该装置的可见距离仍为280m^370m,该距离能使飞行员识别并安全复飞。该公式为判断机场跑道临时关闭警示装置在空中的可见性提供了计算方法,也从理论上验证了该装置可以满足可见性要求并通过实验初步验证了该计算方法的正确性。To acquire the overall light intensity value of lighted visual aid to indicate temporary runway closure and the relationship between device visible distance and the air turbidity T,the virtual points were used to calculate the overall light intensity of the device.Compared with the superposition method,this method can upgrade the accuracy.Then,the relationship between the air turbidity Tand the runway visual range(RVR)was built,according to the Rayleigh and Mie scattering formulas.And the point light stadia formula was corrected.The new way makes it meaningful by considering the relationship between incident wavelength and RVR.Through calculation,we know that the visible distance varies from 280 mto 370munder the lowest operational standards,which can guide pilots to find it and fly again safely.The equation gives a calculation method to judge the visibility of lighted visual aid to indicate temporary runway closure,also it proves that the device can meet the visibility requirement theoretically.The correction of the calculation method was tested by experiments primarily.

关 键 词：光强 RVR 散射 可见性 

分 类 号：V351.3[航空宇航科学与技术—人机与环境工程]