Multi-domain Overlay Cross Refraction Static Correction Method

The static corrections are essential to data acquisition , data processing andinterpretation for complex near-surface areas.How to solve the static correction problemscaused by the changes of near surface factors with refracted first-break information is akey problem for data processing in complex near-surface areas.Different refraction first-break statics methods are studied in this thesis,theygenerally start from individual time-picks,which is time-consuming and tendious.In orderto avoid it,a new method is presented to calculate the static correction values usingfirst-break stacks of the dominant refractor after LMO correction.LMO correction reducestrace length and line up the first arrivals.Then determine the offset range,compute thestacks in shotpoint mode,pick these stacks,compute the stacks in receiver mode,pickthese stacks,comput and check the static corrections.Object-oriented programming technique allows user to model the physical objects bydefining their attributes and physical operations in the form of software objects orclasses.Data structures and methods are used to represent attributes and operations.OOPprovides the mechanisms,such as encapsulation,inheritance and polymorphism,whichcan increase the level reusability,maintainability and modifiability.Based on object-oriented programming technique,the stacked-crossvalue refractionstatics system is analysed and designed,and each part class,which is needed by the entiresystem,is structed.Under the Windows 2000 operating system,Star-Static 1.0 softwareis developed by using Visual C++ 6.0,so that,a convenient visual system is provided forfurther research and implement of the stacked-crossvalue static method.