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主要提出两种消除数字地震信号中长周期随机干扰的方法 :窄带低通滤波对消法和自适应高通滤波法。通过使用多级抽点技术大大减少滤波法的运算量 ,可获得良好的滤波特性。最后对两种方法进行了对比讨论并给出了实验结果。
Two main methods to eliminate the long-period random interference in digital seismic signal are proposed: narrow-band low-pass filter cancellation method and adaptive high-pass filter method. Through the use of multistage pumping techniques to greatly reduce the amount of filtering algorithm, get good filtering characteristics. Finally, the two methods are compared and discussed and the experimental results are given.