IEEE Standard Definitions: Navigation Aid Terms

This document represents a revision of material contained in the previous edition of IEEE Standard No. 172 (54 IRE 12.S1) and IEEE Standard No. 174. In addition, there has been consolidated into this document selected applicable terms from 49 IRE 12.SI. 59 IRE 12.SI, former IEEE Standard No. 173, and the IRE Dictionary which was published in 1961.