Reflectivity of land clutter
hgtsd — standard deviation of the surface height
beta0 — slope of the land type
vegtype — vegetation type
Calculate NRCS, surface height standard deviation, land slope, and vegetation type. Specify an urban land type and a grazing angle of
graz = 10; [nrcs,hgtsd,beta0,vegtype] = landreflectivity("Urban",graz)
nrcs = 0.0549
hgtsd = 10
beta0 = 5.7296
vegtype = 'None'
landtype— Surface land type
Surface land type, specified as a string of one of the allowed land types.
landtype = "Urban"
graz— Grazing angle
Grazing angle, specified as a scalar or an N-length row vector of nonnegative grazing angles in degrees. Specifies the grazing angles of the clutter patch relative to the radar.
graz_angle = 10
freq— Transmitted frequencies
10e9(default) | scalar | positive M-length vector
Transmitted frequencies, specified as a scalar or positive M-length vector.
freq = 7*10e9
nrcs— Normalized radar cross section of surface reflectivity
hgtsd— Standard deviation of surface height
Standard deviation of the surface height, returned as a scalar in meters.
beta0— Slope of the land type
Slope of the land type β0, returned as a scalar in degrees.
vegtype— Vegetation type
The vegetation type is a character array determined by the
|Land Type||Vegetation Type|
This function assumes a Gaussian clutter model and that the reflectivity of land clutter is mostly independent of wavelength. The Gaussian model may fail to simulate the effects of some natural and most man-made structures, which are generally modeled separately as discrete clutter.
 Barton, David K. Radar Equations for Modern Radar. Norwood, MA: Artech House, 2013.