The quality of seismic data has been improved with the application of variable-depth streamers (VDS) acquisition,which leads to diversity of receiver ghost notch,and the key advantage is the utilization of notch diversity to combine different depth receivers,thus achieving the final better result which has no notches.This paper focuses on the effects of VDS acquisition on frequencies especially on low frequencies that benefit the images of deep geological structure.The slope function provided by this paper can effectively gauge the extent of low frequencies,and it is easy to find the frequency difference between shots modeled by conventional constant depth streamer (CDS) and ones modeled by VDS;In addition,considering the ghosts caused by the marine free surface,the method outlined in this paper derives a surface datum ghost free result of input shot gather data by using the modified least squares linear Radon equations.Its application to model data and real VDS seismic data shows that this deghost algorithm can effectively suppress the ghosts.