Abstract：Starting from traditional minimum entropy de-convolution, the paper studied the conception of entropy and its concrete meaning in seismic exploration and pointed out some problems existed in current-used minimum entropy deconvolution method.Faced with the disability that the normalized variance norm would suppress the weak reflections, the paper presented the method using the logarithm transform entropy norm to replace the normalized variation norm and changed the minimum entropy to limited entropy, which made entropy norm of seismic records close to given en- tropy norm but did not constantly reduce entropy.The method can effectively reduce suppression of weak reflections.The processed results of real data showed the correctness of the method, which can effectively improve the resolution of seismic data in a precondition of reducing suppression of weak reflections that better keeps the balance of total energy in seismic data.The method is further development of classic minimum entropy deconvolution.
