Section nonlinear interpolation algorithm analysis of new electro-optic transformer;

Having analysed the localization of several typical methods for traveltime computation(finite difference method,linear interpolation method and so on) in briefly,authors put forward a method for traveltime computation based on nonlinear interpolation,and deduced its calculation formula.

Regarding the inherent drawbacks of linear interpolation (edge blurring or artifact), nonlinear interpolation technique is studied in this paper.

The application of one-dimension non-linear interpolation inreconstruction of ultrasound B mode images;

The traditional non-linear interpolation based on travel-time square although improved the computational precision of ray path and travel time, the algorithm is not suitable for the area the velocity violently changed.

The nonlinear and linear error models of initial alignment for strapdown inertial navigation system(SINS) on stationary base were discussed,the principle of nonlinear interpolation filtering approach was analyzed,and the algorithm of nonlinear interpolation filtering for system model with additive noise was introduced,then it is applied to initial alignment for SINS on stationary base.