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Coaxial multi-detector system and method for measuring the extinction coefficient of an atmospheric scattering medium
Coaxial multi-detector system and method for measuring the extinction coefficient of an atmospheric scattering medium
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机译:用于测量大气散射介质消光系数的同轴多探测器系统和方法
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摘要
An apparatus and method are provided for determining the extinction coefficient of an atmospheric scattering medium utilizing a single-ended optical system having a predetermined transmitter field of view and two concentrically arranged cooperating optical receivers, wherein backscattered light from near and far receiver fields of view for each of a series of transmitted light pulses is collected by the respective receivers. Optimum reception is achieved for both near and far field scatterers and the received signals are selectively processed by a processor which may include, for example, integration, summation, and differentiation steps that automatically yield extinction coefficient data under a wide range of environmental conditions without requirements of extreme apparatus stability, continuous monitoring, or calibration of the apparatus.
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