Benchmark backscattering width test case
PEC triangular cylinder with corners at (0,0), (5,0), and (5,2)
Polyarc description:
p = [0 0 5 0 0];
p(2,:) = [5 0 5 2 0];
p(3,:) = [5 2 0 0 0];
Scattering width data: triangle_backscattering_width.dat (angle in degrees, backscattering width in meters)
f = 300 MHz