SAE AIR902A PDF
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Determination of Distance from Ground Observer to Aircraft for Acoustic Tests
Description
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.
History
| AIR902A | 2022-11-18 | Latest | Reaffirmed |
| AIR902 | 2007-11-06 | Historical | Reaffirmed |
| ISSUING COMMITTEE | A-21 Aircraft Noise Measurement Aviation Emission Modeling |
|---|---|
| DATE | 2022-11-18 |
| DOI | |
| ISCURRENT | Current |
| PAGE | 24 |
| PUBLISHER | SAE International |
| REVISED | REAFFIRMED |
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