Simultaneous sources separation via multi-directional vector-median filter
Shoudong Huo, Yi Luo, Panos G. Kelamis · 2009
The seismic acquisition technology, referred to as “simultaneous sources”, records two or more shots (ignited with random delay time) in a single shot gather. Despite the fact that the recorded data is blended among different shot gathers, conventional processing procedures could still produce acceptable images for interpretation. However, separating the blended data into single shot gathers is still desirable for further improving the seismic image quality. This paper introduces a new Multi-Directional Vector-Median Filter (MD-VMF) to separate the blended seismic shot gathers. The vector median filter extends the conventional one from scalars to vectors. Moreover, it is applied in multiple directions centered at any sample point in a seismic (e.g., common receiver or CMP) gather and the filtered result in the most coherent direction is selected as the output. Tests on both synthetic and real marine seismic data simulating blended acquisition confirm the effectiveness of our proposed MD-VMF approach.