SAE AIR902A

Annotation of standard text SAE AIR902A :

This document describes a practical system for a user to determine observer-to-aircraft distances. These observer-to-aircraft distances can be either closest point of approach (CPA) distances during field measurements or overhead distances during acoustic certification tests. The system uses a digital camera to record an image of the subject aircraft. A method of using commercial software to obtain the distance from such an image is presented. Potential issues which may affect accuracy are discussed.

SUBJECT TAXONOMY: Computer simulation, Mathematical models, Imaging and visualization, Exterior noise, Noise measurement, Acoustics, Test procedures, Aircraft
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard