Angular deviation loss

From International Dictionary of Marine Aids to Navigation
Jump to navigation Jump to search


The difference in level, expressed in decibels, of the emission or response on the principal axis of a sound source or receiver and the emission or response in a specified direction.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM