landroughness

Surface height standard deviation for land

Since R2021a

Syntax

hgtsd = landroughness(landtype)

[hgtsd,beta0,vegtype] = landroughness(landtype)

Description

hgtsd = landroughness(landtype) returns the standard deviation of the surface height for the specified land type.

[hgtsd,beta0,vegtype] = landroughness(landtype) in addition to hgtsd returns:

• beta0 — the slope of the land type.

• vegtype — the vegetation type.

Examples

Land Roughness of Urban Patch

Obtain the standard deviation of the surface height for an urban land.

hgtsd = landroughness('Urban')

hgtsd = 
10

Input Arguments

landtype — Surface land type

"Rugged Mountains" | "Mountains" | "Metropolitan" | "Urban" | "Wooded Hills" | "Rolling Hills" | "Woods" | "Farm" | "Desert" | "Flatland" | "Smooth"

Surface land type, specified as "Rugged Mountains", "Mountains", "Metropolitan", "Urban", "Wooded Hills", "Rolling Hills", "Woods", "Farm", "Desert", "Flatland". or "Smooth".

Output Arguments

hgtsd — Standard deviation of the surface height

scalar

Standard deviation of the surface height, returned as a scalar in meters.

beta0 — Slope of the land type

scalar

Slope of the land type β₀, returned as a scalar in degrees.

vegtype — Vegetation type

character array

The vegetation type is a character array determined by the landtype input.

Land Type	Vegetation Type
Rugged Mountains	Trees (dense)
Mountains	Trees (dense)
Woods	Trees (dense)
Wooded Hills	Trees (dense)
Rolling Hills	Brush (dense)
Farm	Grass (thin)
Desert	Grass (thin)
Flatland	Grass (thin)
Metropolitan	None
Urban	None
Smooth	None

References

[1] Barton, David K. Radar Equations for Modern Radar. 1st edition. Norwood, MA: Artech House, 2013.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2021a