编辑同志:我在《石油地球物理勘探》第四期中,见到了向方同志对《用多次复盖压制干扰的一些看法》一文提出了意见,实际上反映了多次复盖传统的分析方法对其他分析方法的责难。现对两种分析方法作一简单的讨论,提出来与向方同志商榷。一.组合理论在推导时假定波的时差与距离是线性关系(即波前是平面的),客观上真正平面波前是不存在的。但是这一点丝毫不影响我们正确地使用组合理论。因为,组合理论实质上是一种波数滤波,通过组合,其目的在于使有效波的波数处于通放区获 Editor’s Comrade: In my fourth issue of “Petroleum Geophysical Prospecting,” I commented to Comrade Fang on the article “Some Opinions on Suppressing Interference with Multiple Exposures”, in fact, reflecting the fact that many times covering the traditional analytical methods Censure of other analytical methods. Now a brief discussion of the two analytical methods, put forward to discuss with the comrades. First, the combinatorial theory assumes that the wave’s time-lag is linear with the distance (that is, the wavefront is flat) when deduced. In reality, the true plane wavefront does not exist. But this does not in any way affect the proper use of combinatorial theory. Because, combinatorial theory is essentially a wave number filter, through the combination of its purpose is to make the effective wave number in the relief area