3D generalized nonhyperboloidal moveout approximation

General method for parameter definition

To define parameters in equation 1, we propose to use information from the zero-offset ray and four far-offset rays along $x$ -axis, $y$ -axis, $x=y$ , and $x=-y$ . Following an analogy with the 2D scheme by Fomel and Stovas (2010), we derive some of the coefficient formulas as follows: