Automatic method of first break picking based on edge detection and spline interpolation.;

Tomographic inversion of first break in surface model;

A new method for high-precision first break secondary positioning—search method;

Since the nature of this slow speed wave arrival was not distinct, these slow speed waves were named as W 1, W 2 and W 3 respectively (where W stands for wave), according to their apparent velocities ranging form high to low.

A study on the measure function used in the detection of transient signal s arriving points;

The main method of transient signal arriving points detection is introduced, which includes the adaptive weight vector method (AWVM) lying on adaptive canceling theory,the Gabor transfonn method based on temporal frequency a-nalysis, the MRA method and wavelet transfonn method on one dimension.

Picking first arrival is the base of refraction statics, and it is often difficult to do with many data in the northwest area of China.

In seismic data processing of the northwest area in China, statics is the most effective method,and this method is based on picking first arrival accurately.