M. Kara, GROUND ERROR CURVES FORMULAS FOR VHF OMNIRANGE RADIO BEACON ANTENNA SYSTEM, Microwave and optical technology letters, 15(6), 1997, pp. 369-373
A simple method has been introduced for analyzing VHF omnirange radio
beacon errors caused by deficiencies in and misalignment of its antenn
a system. It is based on numerical computation of the Fourier series e
xpansion for a ground error drive, and in so doing, provides a set of
formulas Sor computing the amplitudes of duantal, quadrantal, and octa
ntal errors. (C) 1997 John Wiley & Sons, Inc.