An Analysis of Runway Visual Range

摘要

The results of a controlled observational program have been compared to Runway Visual Range values. A mobile laboratory was positioned on the touchdown point of an instrument runway during low visibility conditions. Observers were stationed on top of the vehicle to make RVR observations. The high intensity runway edge lights were counted under various light intensity settings and illumination conditions. Simultaneous measurements of atmospheric transmittance provided RVR values. Interim results are based on observations made at NAFEC airport only. They indicate that day RVR values are conservative and night RVR values are representative of static observations made of the high intensity runway edge lights.