Abstract：The key to improving signal jnoise ratio in high-resolution seismic data processing lies in eliminating the influence of high frequency noises Thus a new method is given of recursive noise elimination in f-x domain and spectrum equalization under dominant frequency restriction According to the method,by using the restriction of prediction operator of dominant frequency contents having the highest signaljnoise ratio,people can make recursive solution respectively along the increase and decrease directions of frequency in the given band to solve for the desirable prediction operators of other frequency contents which have low signaljnoise ratio,thus achieving satisfactory noise elimination of the contents whose signalJnoise rado is low.The spectrum equalization under dominant frequency restriction is based on the amplitudes of dominant frequency contents,and it can achieve the spectrum equal- ization of seismic data in given windows to keep constant the relative amplitude relation of seismic data,and to raise the apparent dominant frequency of seismic wavelets.
