Design Of Hybrid-Source Electromagnetics Data Processing Software

Hybrid-source electromagnetic belongs to electromagnetics spectrum Geo-Exploration method. The method based on magnetotelluric(MT) theory, synthesizes the feature of MT method (including AMT) and CSAMT method and utilizes electromagnetic induction effect and electromagnetic skin effect to get distributing information of subsurface conductivity, and then explore the structure of substance composition underground. The rising geophysical exploration method combines natural field source with man-made field source and become an effective means to explore the structure of subsurface. The method more and more applied to important project which relate with the national economy and the people's livelihood, such as explore subsurface water, architecture Geo-Exploration etc.The thesis based on magnetotelluric theory and analyzing the data processing of foreign same type instrument, study and design the data processing software of hybrid-source electromagnetic receiver. The thesis includes 3 segments: In the first segment the paper present analyzing of magnetotelluric theory establish base to hybrid-source electromagnetic data processing; In the second segment the paper present realization of hybrid-source electromagnetic data processing software; In the third segment the paper present conclusion of the thesis.The thesis includes 6 chapters:Chapter 1 introduces the background of design hybrid-source electromagnetic data processing software, present content and significance of the thesis.Chapter 2 analyzing the theory base of Hybrid-source electromagnetic theory--magnetotelluric theoryChapter 3 introduces the construction and operation process of hybrid-source electromagnetic receiver, and describes hardware baseplate of data processing software. Especially introduces data acquisition part and hardware of USB communication module.Chapter 4 introduce the whole course of hybrid-source electromagnetic data processing, decompose and facilitate the calculate formula of scalar resistively and apparent resistively in order to program data processing software. Mark out the whole data processing course. Analyzing three calculate methods of data veracities estimate. Analyzing hybrid-source electromagnetic noise source and it's characteristic then present several noise elimination's ways: frequency eliciting, logarithm average, trap filter, filter, beforehand white noise disposal etc.Chapter 5 Based on course of hybrid-source electromagnetic data processing, present data processing software flow chart. For computer, design C language hybrid-source electromagnetic data processing software based on Visual C++, present main function's C language code. For floating-point DSP TMS320VC33, combine C language with DSP assembly language programmed hybrid-source electromagnetic data processing software, present main function's assembly code. At last, present the result of data processing.Chapter 6 Analyzing the algorithmic disadvantages, bring forward amendment's scheme.