Research on Correlation Imaging of Gravity Gradient Based on FFT

The traditional gravity data processing and interpretation are concentrated in gravity anomaly, caused horizontal and vertical resolution, and accuracy is not high. In this paper, we use gravity gradient data with higher resolution to explain gravity data; calculate the correlation coefficient and image the correlation coefficient, and make use of Fourier transform to filter the gravity, gravity gradient anomaly data, calculate the data extracted each time and then stock in order to improve the imaging resolution. Then calculate the three-layer model by setting, the correlation imaging is not well; make use of FFT to filter the data and then calculate correlation coefficient for separate data and then stock, the correlation coefficient imaging proved the obvious effect. The results indicated the feasibility of correlation coefficient imaging after filtering.