從系統測量原理、組成結構、計算過程及測量效果等方面介紹了一種自行研制的透射式能見度測量系統。該系統使用白色LED光源，實現發散角為1 mrad的平行光路;利用積分球進行分光監控以補償光能量變化;使用非球面鏡實現全光斑接收。系統與積分濁度計在2~10 km量程內能見度測試誤差小于10%。從透射式能見度測量原理與計算過程，分析了影響系統測量性能的因素。結果顯示定標準確性、測量線性度與系統穩定性是影響系統測量性能的主要因素，同時給出了該系統的定標準確性、測量線性度與系統穩定性的評估方法及評估數據，驗證了該系統的測量性能。
A selfdeveloped transmission system is introduced from three aspects: measuring principles, composition structure and calculation procedures. The white LED light source is used in this system, and its divergence angle is about 1 mrad. Variation of the light source is compensated by the integrating sphere, which can split the beam. The full facula is received by the aspherical mirror. The relative deviation between the transmission system and the nephelometer is less than 10% from the 2 km to 10 km. Influencing factors of measurement performance are analyzed from measuring principles and calculation procedures. The results show that the main factors affecting the measurement performance of the system are the accuracy of the standard, the linearity of measurement, and the stability of the system. At the same time, the assessment methods and the data of calibration accuracy, measurement linearity, and system stability are given, which verify the measurement performance of the system.