The fast far field approximation (FAFFA) technique is employed in the hybrid physical optics-moment method (PO-MM) to speed up the matrix-vector product in the solution of matrix equation.New formulas accounting for the electromagnetic interaction among far-field groups have been derived.The computational complexity of the proposed technique is analyzed.The calculated results of radiation pattern

input admittance and mutual admittance of wire antennas on a complex platform are in good agreement with those in literature.Numerical results of wire antennas mounted on a ship model are also presented

which illustrate the accuracy and efficiency of the proposed technique.