��Դ�ͳ���²ɼ��õ��ĺ��ϵ��������ܹ�Ӱ�������Ƶ����ȱ�խ���������һ��ȥ������������ѹ�ƹ�ЧӦ���ؿ�Ƶ����������Ƶ��--�ռ����Ƶ��������������ɹ�ʽ�������ڷ�ֵ������󻯵IJ��������������������ŵĹ��ӳ�ʱ�䣬�����ŵĹ��ӳ�ʱ���뾵���¼���ɹ�ʽ��������ŵľ����¼���������Ϸ��޻��㷨�õ����ŵ�ȥ��������������еķ���Ӧ����ģ��ı���Ȳɼ����ݺͺ���ʵ��ı���Ȳɼ����ݣ�֤ʵ�÷���������Ч��ѹ�ƹ�������Ƶ���е��ݲ��㣬�õ���Ƶ���ݡ�

Aiming at the frequency bandwidth of the marine seismic data acquired by conventional streamer acquisition narrowing down��which is affected by ghost��this paper put forward a deghosting method which can sup- press the ghost and widen the frequency band�� Firstly��the formula to produce mirror records was derived in fre- quency-space domain and the authors estimated the best delay time of ghost by using parameter search method based on maximization of peak factor�� Then the optimal delay time was taken into the formula to produce formula and obtain optimal mirror data�� Ultimately��the optimal deghosted output can be calculated by using joint deconvo- lution algorithm�� Applying the method to simulative variable depth data and marine variable-depth streamer data��it was showed that this deghosting method could suppress the ghost��reduce the spectral notches and acquire wider- band data��