组合技术在地震勘探中被最广泛地应用.组合相当于一种滤波器,它包含了时间和空间的双重滤波.在时间域中,研究组合的频率滤波特性;在空间域中,研究组合的波数滤波特性.而速度概念既包含时间又包含空间,所以,组合实质上是一种视速度滤波.研究组合的视速度滤波特性不但在实用上极有价值,而且在方法上也是极 Combinatorial technology is the most widely used in seismic exploration.Composition is equivalent to a kind of filter, which contains time and space of double filtering.In the time domain, the combination of frequency filtering characteristics of the study; in the space domain, the study of the combination of Wave filter characteristics.The concept of speed contains both time and space, so the combination is essentially a kind of apparent velocity filtering.Study the combination of apparent velocity filtering characteristics not only extremely valuable in practice, but also on the method