A Study On Releasing Ways Of Listed Companies'State Share

Ground penetrating radar or Georadar, is a new no destroying detection instrument with rapidly developing in recent years. It is applied to engineering, environment, archaeology and other aspects. Data processing's theories and methods are one of the key aspects in GPR researching, because these are useful to picking up parameters in reflection wave including amplitude, phase, frequency and so on. These provide a possibility to improve the resolution before geological interpretation. There are ripe in reflection seismic, but elementary in GPR are elementary.There are four main parts in this paper. The first place, though analyzing between the sound approximately equation and the electromagnetic wave equation, we get the similarities in the form of equation. Based on these, we can easily take the migration theories and methods of reflection seismic into GPR's. Secondly, three migration methods including Kirchhoff integral, 15?Finite difference and Wave equation phase displacement are discussed with the steps of performing on computer. These represent three main sorts at present. By phase displacement forward method, we synthesized some two-dimensional geoelectrical sections, for example 2-D dipping interface model, 2-D dual geoelectic interface model and concrete pipeline model in homogeneous soil media. Though migration methods processing these sections can prove the migration method's efficiency and identify GPR profiles characters. Finally, using them process field GPR data. The results show that the migration results are much improved. From analyzing migration results, we can get much useful messages on them. Thirdly, three kinds of amplitude processing method are briefly presented. These methods can enhance the weak signal from depth and establish an energy balance within the gather. At last, base on the idea of visual programming, we used Visual C++ 6.0 to develop the data processing software of ground penetrating radar .The software can draw wiggle map at present. The function is perfection including filter, forward synthesis , migration etc. It is convenient to use with friendly interface.