Difference in the depth of modulation
id:
difference-in-the-depth-of-modulation-256-7094785
title:
Difference in the depth of modulation
text:
The difference in the depth of modulation (DDM) is used by instrument landing systems in conjunction with the associated airborne receiving equipment to define a position in airspace. DDM is usually expressed in percentage but may also be expressed in microamperes. The two individual audio modulation frequencies and their associated sidebands are 90 and 150 Hz. The DDM for a localizer at the outer extremity of the course sector is 15.5% or an electric current equivalent of 150 microamperes full
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wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Difference_in_the_depth_of_modulation
date created:
date modified:
2023-11-29T21:25:04Z
main entity:
{"identifier":"Q5275277","url":"https://www.wikidata.org/entity/Q5275277"}
image:
fields total:
13
integrity:
13