Multichannel analysis of surface wave (MASW) methods are powerful tools for estimating near-surface shear wave velocity model to be used in geotechnical and engineering projects. It is essential factor in classifying soils and estimating elastic and dynamic parameters of near-surface layers. The proper identifying of fundamental dispersion mode from the higher modes is a common challenge in MASW, which directly affects the quality of the estimated shear wave model. In this paper we investigated the mode osculation phenomenon, in which the first higher and fundamental dispersion modes get very close to each other and tracing of fundamental mode almost becomes impossible. This problem arises mostly because of using only vertical geophones in acquiring the data. In this research we suggest simultaneously using of horizontal inline geophones to avoid such a problem. We also showed that osculation frequency can be predicted using vertical ellipticity of Rayleigh waves.