Evaluation of radar cross section of large platforms by the method of moment at PC computers

For electrically large platforms approximating potentials of higher order basis functions can be fully exploited. In this case accurate results can be obtained even with 15 unknowns per wavelength squared. This means that symmetrical platforms with total surface area of 3000 /spl lambda//sup 2/ can be handled on personal computers. In the case of Mirage (whose length is about 12 meters) accurate results can be obtained at 2 GHz, at which its electrical length is 80 /spl lambda/.