College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China

Through the study of cross-correlation imaging conditions between wavefield decomposition and source-receiver bi-directional illumination, the authors combine the imaging advantages of two methods in the noise elimination and amplitude distortion compensation to increase the imaging resolution and improve the existing imaging conditions. The main procedures include separating source and receiver wave fields into one-way wave components and adopting bi-directional illumination compensation cross-correlation imaging condition to image the wavefields. Model trial validates that the imaging conditions proposed can effectively suppress noise and compensate imaging amplitude.