Given the velocity of low velocity layer (direct wave) and by means of the first break information of production shots and the static correcting mathematical model based on the weighted least squares and conjugate gradient method, we can calculate the static correction values of the long and the short wavelengths on the basis of iterative algorithm.

Fitting process was used in the computation of statics of long and short wavelength in domains of common shot, common receiver, and common offset, and a near surfac.

The paper presented a new method for refraction statics which can simultaneously calculate long wavelength and short wavelength.

The car body long-short wave orange peel and DOI are checked,compared and analyzed according to different color,different location by using BYK orange peel instrument and NAP instrument.