Page Comparison

Anchor

	A17.5
	A17.5

A spherical propagation model based on various ITU-R Recs 452, 676 and 526 is applied in SEAMCAT for larger distances and higher frequencies

Anchor

	F469F474F469
	F474

Figure 469474: SEAMCAT Interface to the Spherical diffraction propagation model

...

Anchor

	T082T083T082
	T083

Table 8283: Spherical diffraction propagation model

Description	Symbol	Type	Unit	Comments
Variation

			Variation in path loss takes into account the uncertainty of building design, furniture, room size, etc.
Wall loss(indoor - indoor)

Scalar

dB

Wall loss std dev (indoor -indoor)

Scalar

dB

Wall loss(indoor - outdoor)

Scalar

dB


Wall loss std dev (indoor - outdoor)

Scalar

dB

Loss between adjacent floor

Scalar

dB


Empirical parameters:	b


Size of the room	d_room	Scalar	m


Height of each floor	h_floor	Scalar	m


Water concentration

Scalar

g/m^2

Earth surface admittance


Refraction Index gradient


Refraction layer probability


Time percentage (min)


Time percentage (max)

...

Versions Compared