Calculates the width of a radar beam as a function of range and beam angle.
beam_width(range, beam_angle = 1)
numeric. Range (distance from the radar antenna) in m.
numeric. Beam opening angle in degrees, typically the angle between the half-power (-3 dB) points of the main lobe
numeric. Beam width in m.
#' # beam width in meters at 10 km range: beam_width(10000) # define ranges from 0 to 1000000 meter (100 km), in steps of 100 m: range <- seq(0, 100000, 100) # plot the beam width as a function of range: plot(range, beam_width(range), ylab = "beam width [m]", xlab = "range [m]")
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