MTPO based potential function of the boundary diffraction wave theory

The physical optics integral on the scatterer's unlit surface

“…The image of the incident wave, which has the expression of u i (P) = ±e jk cos( 1 + 0 − ) (17) according to the new Cartesian coordinate system (x 1 ,y 1 ), hits the shadowed face of the wedge. We used instead of 1 , because they are equal to each other.…”

Physical optics theory for the scattering of waves by an impedance strip

“…where f(x) and g(x) are the amplitude and phase functions of the integral [20]. x s is the stationary phase point, which can be evaluated by the equation g′(x) = 0. x e is the edge point of the integral.…”

Rigorous Expressions for the Equivalent Edge Currents

“…(16). Exact line integrals for the theory of BDW were introduced by Umul, recently [25,26]. Another important point of the theory is the poles of the integrand.…”