Diffraction by smooth conical obstacles

Expressio ns obtained earl ier [1, 2] 3 for th e calculation of diffraction du e to condu ctin g obstacles wi t h s mooth cylindrical surfaces, are generalized to obliq ue incid e nce and to s urfaces of conical shape. Th e derivation is based o n a ge neraliz ed cOll ce pt of t he Greell 's fUll ctio n and on the usc of co rrective factors that take t he same p lace as co rrect ions int roduced by oth er aut hors in to the t heory of diffraction by ape r t ures. The final expressions for con ical obstacles and oblique in Gidence are very simila r to those for cy lindri cal obstacles. The r es ults are comp>Lr ed with scale model m easurements.