Abstract: The all-sky meteor radar is the newest generation of meteor radars, which can receive the radio waves reflected by meteor echoes.At present, the main objects observed by the modern meteor radar is the atmospheric wind fields in the meteor region, with the purpose of research atmospheric dynamics.This thesis utilizes all-sky meteor radar based on a new method which is used for determining momentum flux by Hocking to research atmospheric parameters, namely as the momentum fluxes of gravity waves.Because of the difference of sampling time, this new method is still controversial.We mainly use the data collected by the all-sky meteor radar operated at 37.5MHz to validate the influence of sampling time on gravity momentum fluxes.Meanwhile, we use data collected by the all-sky meteor radar with different frequencies (37.5MHz and 53.1MHz) during September 2014 to verify the correctness of the new method improved by Hocking.The results show that:the choice of sampling time greatly influences the determination of gravity waves; and with suit sampling interval, it is viable to determine gravity wave momentum fluxes using the new method based on all-sky meteor radar.