Depression angle of surface target
depAng = depressionang(H,R)
depAng = depressionang(ht,r,MODEL)
depAng = depressionang(H,R,MODEL,Re)
depAng = depressionang(___,'TargetHeight',TGTHT)
returns the depression angle from the horizontal at an altitude of depAng
= depressionang(H
,R
)R
meters to surface targets. The sensor is H
meters above the surface.
R
is the range from the sensor to the surface targets. The computation
assumes a curved earth model with an effective earth radius of approximately 4/3 times the
actual earth radius.
specifies the earth model used to compute the depression angle. depAng
= depressionang(ht
,r
,MODEL
)MODEL
is
either 'Flat'
or 'Curved'
.
specifies the effective earth radius. Effective earth radius applies to a curved earth model.
When depAng
= depressionang(H
,R
,MODEL
,Re
)MODEL
is 'Flat'
, the function ignores
Re
.
specifies the target height, depAng
= depressionang(___,'TargetHeight
',TGTHT
)TGTHT
above the surface as either a scalar
or a vector. If any combination of H
, R
, and
TGTHT
are vectors, then the dimensions must be equal.
r
must be greater than or equal to the absolute value of the difference
of ht
and TGTHT
.

Height of the sensor above the surface, in meters. This argument can be a scalar
or a vector. If both 

Distance in meters from the sensor to the surface target. This argument can be a
scalar or a vector. If both 

Earth model, as one of  Default: 

Effective earth radius in meters. This argument must be a positive scalar value. You can used
Default: 

Target height above surface, specified as a scalar or vector. If any combination
of Default: 

Depression angle, in degrees, from the horizontal at the sensor altitude toward
surface targets 
[1] Long, Maurice W. Radar Reflectivity of Land and Sea, 3rd Ed. Boston: Artech House, 2001.
[2] Ward, J. “SpaceTime Adaptive Processing for Airborne Radar Data Systems,” Technical Report 1015, MIT Lincoln Laboratory, December, 1994.