Create 3-D response pattern from azimuth and elevation cuts
creates a 3-D element response pattern,
pat = azelcut2pat(
pat, from an azimuth cut,
azcut, and an elevation cut,
elcut. An azimuth
cut consists of an antenna pattern over all azimuth angles at 0° elevation. An elevation cut
consists of the antenna pattern over all elevation angles at 0° azimuth. You can specify
cuts for different frequencies at the same time.
Create a custom antenna pattern from azimuth and elevation cuts of a cosine-squared pattern.
az = -180:180; azcut = mag2db(cosd(az).^2); el = -90:90; elcut = mag2db(cosd(el).^2); pat = azelcut2pat(azcut,elcut); antenna = phased.CustomAntennaElement('AzimuthAngles',az,... 'ElevationAngles',el,'MagnitudePattern',pat,... 'PhasePattern',zeros(size(pat)));
Display the antenna pattern for 200 MHz.
fs = 200.0e6; pattern(antenna,fs);
azcut— Azimuth pattern cut
zeros(1,361)(default) | real-valued 1-by-Q vector | real-valued L-by-Q matrix
Azimuth pattern cut, specified as a real-valued 1-by-Q vector or
a real-valued L-by-Q matrix. Q
is the number of azimuth angles, and L is the number of frequencies.
Azimuth cuts are assumed to be made at 0° elevation. When
a matrix, each column represents a different azimuth angle, and each row represents a
different frequency. Units are in dB.
elcut— Elevation pattern cut
zeros(1,181)(default) | real-valued 1-by-P vector | real-valued L-by-P matrix
Elevation pattern cut, specified as a real-valued 1-by-P vector
or a real-valued L-by-P matrix.
P is the number of elevation angles, and L is
the number of frequencies. Elevation cuts are assumed to be made at 0° azimuth. When
elcut is a matrix, each column represents a different elevation
angle, and each row represents a different frequency. Units are in dB.
pat— 3-D antenna pattern
3-D array or antenna pattern, returned as a real-valued P-by-Q matrix or real-valued P-by-Q-by-L MATLAB® array. Units are in dB.
The function returns a 3-D antenna pattern at the same azimuth and elevation angles used
to define the
elcut cuts. Because the cuts
are specified in dB, the 3-D pattern is computed from the sum of the cut patterns.
pat(az,el) = pat(az) + pat(el)