For near surface vertical seismic profile, slim hole VSP tools and light seismic sources are usually used. The slim hole VSP tool is either a single component tool or a multi component tool.
The example describes the different processing steps of a near surface VSP recorded on the Hydrogeological Experimental Site of the University of Poitiers. It shows how wavenumber filter, median and moving average filters can be combined to separate the different wave fields
Figure shows step by step :