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双频激电观测方法具有优良的抗干扰性能,能够有效的避开现代人文干扰.但在地表风化严重的矿区,分散的矿晕会给双频激电方法添加大量的“矿致”干扰噪声异常.这种噪声往往超高、超强,一般的圆滑方法根本没办法滤除.作者通过将已知正弦波信号叠加随机超高、超强噪声信息,然后比较小波变换、5点2次圆滑、7点2次圆滑等的处理结果,发现小波变换能够有效压制超高、超强的噪声干扰.并通过对埃塞俄比亚西部某矿区的实测双频激电数据进行小波变换处理,处理后的结果很好的滤除了测区超高、超大的干扰噪声信息,取得了比较理想的结果.
The dual-frequency method has excellent anti-jamming performance and can effectively avoid the interference of modern humanism.But in the mining area where the surface weathering is serious, the scattered mineral haloes will add a lot of Interference noise anomaly.This noise is often superhigh, super, general method of smoothing simply can not filter.The author by known sinusoidal signal superimposed random superhigh and super noise information, and then compare the wavelet transform, 5 points 2 Smoothing, smoothing at 7 o’clock and smoothing at 7 o’clock, we find that the wavelet transform can effectively suppress the ultrahigh and super noises.At the same time, by processing the measured dual-frequency data in a mining area of western Ethiopia by wavelet transform, The result is a good filter out of the area of ultra-high, large interference noise information, and achieved satisfactory results.