Modeling Line-of-Sight Blockage of Aircraft Noise


To provide a method that accounts for the attenuation due to line-of-sight blockage of aircraft noise by terrain features.


SAE-AIR-1845A "Procedure for the Calculation of Airplane Noise in the Vicinity of Airports" provides guidance for modeling aircraft noise at airports with flat terrain. In reality, many airports are surrounded by non-level terrain that may result in noise blockage (or shielding) at some nearby receptors. This noise blockage can be accounted for with the line-of-sight blockage calculation, based on the difference in propagation path length between the direct path and propagation path over the top of terrain features.

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