A new algorithm for the computation of the geodetic coordinates as a function of earth-centered earth-fixed coordinates

y, M.J. and Lees, P.P., "A Survey of Simple Transfer Function Derivations from High-Order State-Variable Models," Automatica, Vol. 8, 1972, pp. 765-775. Genesio, R. and Milanese, M., "A Note on the Derivation and Use of Reduced-Order Models," IEEE Transactions on Automatic Control, Vol. AC-21, Jan. 1976, pp. 118-122. Lin, J.M. and Ran, K.W., "Model Reduction for Control Systems with Parameter Variations," Journal of the Franklin Institute, Vol. 317, Feb. 1984, pp. 117-133. Chen, C.F. and Shieh, L.S., "A Novel Approach to Linear Model Simplification," International Journal of Control, Vol. 8, No. 6, 1968, pp. 561-570. Chuang, S.C., "Application of Continued-Fraction Method for Modelling Transfer Functions to Give More Accurate Initial Transient Response," Electronics Letters, Vol. 6, 1970, pp. 861-863. /f Ellipsoidal h// normal