By exploiting the SSD technique, we can decompose not only the signal and noise in 3-D seismic data, but also the composite event into single events according to their different dips.

• 利用信号子空间分解技术，不仅可以分离3-D地震资料中的信号和噪声，而且可以进一步根据地震同相轴的倾角不同，将混合信号进行分解得到单个同相轴信号。