///Some
    practical methods for scattered wave suppression are presented based on the
    detailed analysis of causes, properties and geometrical characteristics of
    scattered waves as well as influential factors of signal-to-noise ratio (SNR)
    of seismic data. The three dimensional nature of source distribution of
    scattered waves determines the universality of scattered wave interference and
    the severity of horizontal interference. The scattering strength is closely
    related to topography and morphology. The improvement of SNR of seismic data in
    complex areas is a systematic process including the understanding of the
    importance of receiving conditions and the implementation of corresponding
    technical measures. Some basic principles are proposed for seismic line
    emplacement and the selection of shooting and receiving points.