EA: EM_PROPAGATION_CONDITION
EE: STANDARD
Status:
STD 2005/06/07
Code:
2
EA label:
EM_PROPAGATION_CONDITION
Concept definition:
The propagation of radio energy under conditions of standard refraction in the <
ATMOSPHERE
> of the <
EARTH
>, that is, an <
ATMOSPHERE
> or section of the <
ATMOSPHERE
> in which the refractive index (<<
REFRACTION_INDEX_REAL_PART
>>) decreases uniformly with <<
ALTITUDE_MSL
>> at a rate of approximately 40 x 10
-6
per kilometre. The unit of measure equation is defined by N = (n-1) x 10
6
where n is the <<
REFRACTION_INDEX_REAL_PART
>> and is known as an "N-unit".
Reference type:
IR
Reference:
[
GMET
, "standard propagation"]
Supplemental references:
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