Development Of Visual Processing Software For MCSEM Based On Duilib Library And Research On Phase Correction

China is in a period of rapid economic development.Energy problem is the key factor restricting economic development.Compared with developed countries,China's total energy and resources are not rich.Because of its large population,the per capita energy occupancy has a significant gap with the overall level of the world,so it is urgent to develop new energy sources.Research shows that gas hydrate is a clean energy with abundant resources and high efficiency,and will become the main energy in the 21 st century.Marine Controlled-Source Electromagnetic Method(MCSEM)is an effective geophysical method for detecting gas hydrates,which can effectively detect the electrical structure of submarine strata.With the application of marine controlled-source electromagnetic method in Marine Geology and mineral resources,the related theoretical research has also become mature.However,the development of data processing software is lagging behind.There are some problems such as low integration,tedious operation,low efficiency and lack of visual interface.Therefore,the development of practical preprocessing integration software is of great significance to the application and development of marine controllable source electromagnetic.Based on Microsoft Visual 2013 platform,modular visualization software for marine controlled-source electromagnetic data preprocessing is developed by calling Duilib library.The completed modules include: loading and displaying raw data,quality control,data preprocessing and displaying,data correction and export,etc.The main functions are: conversion and merging of current data and artificial source electromagnetic field data,loading,display and analysis of electromagnetic field data,visualization of navigation data,spectrum analysis and visualization of electromagnetic field data(MVT: Magnitude Versus Time and PVT: Phase Versus Time),normalization of spectral data,merging navigation data and MVO(Magnitude Versus Offset).It has many functions,such as displaying PVO(Phase Versus Offset)curve,etc.The reliability and correctness of the software are verified by comparing with the results of previous software processing.In addition,in the process of data inversion,due to the unsatisfactory phase calculation results,the amplitude results are mostly used in data inversion at this stage.Therefore,an ideal phase result is of great significance for later data inversion.In this paper,the influence of clock drift between transmitter and receiver on phase is studied,and the phase correction function is realized.