Surface height standard deviation for sea
beta0— Slope of the sea type in degrees.
beta0is 1.4 times the root mean square (RMS) surface slope. The surface σ0 value for sea clutter reflectivity is computed based on the NRL Sea Clutter Model by Gregers-Hansen and Mittal
windvelocity— Wind velocity in meters per second
Sea Roughness of Sea State
Obtain the surface height standard deviation in meters assuming a sea state of 2.
hgtsd = searoughness(2)
hgtsd = 0.1000
scale — Sea state or wind scale
If you set
scale is interpreted as the sea
state, specified as a nonnegative scalar between [0,8]. If you set
scale is interpreted as the
Beaufort wind scale, specified as a positive scalar between [1,9].
The interpretation of the
scale argument depends on the value
scaletype — Scale type
'SeaState' (default) |
Scale type, specified as either:
'SeaState'— The function uses the Sea State model. When you specify this option, the
scaleinput scale must be a nonnegative scalar between [0,8].
'WindScale'— The function uses the Beaufort Wind Scale model. When you specify this option, the
scaleinput scale must be a positive scalars between [1,9].
hgtsd — Standard deviation of surface height
Standard deviation of the surface height, returned as a scalar. The model for height deviation, surface slope, and wind velocity is based on a model by Barton. Units are in meters.
beta0 — Slope of the sea type
Slope of the sea type β0, in degrees, returned as a scalar.
windvelocity — Wind velocity
Wind velocity, returned as a scalar. The model for the height deviation, surface slope, and wind velocity is based on a model by Barton. Units are in meters per second.
 Barton, David K. Radar Equations for Modern Radar. Norwood, MA: Artech House, 2013.