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研究了在不同噪声强度、不同参考道、噪声仅存在基站或参考站时,远参考处理对测深曲线的影响.通过对标准时间序列进行仿真模拟,发现基站含不同信噪比的非相关噪声,远参考大地电磁对测深曲线提升效果不一:高信噪比(SNR=10.58 d B)条件下,远参考大地电磁能够较完美的恢复测深曲线,低信噪比(SNR=0.2 d B)条件下,远参考大地电磁对测深曲线质量提升效果有限;相同噪声仅存在于基站或者参考站对资料处理效果有区别:噪声仅存在于参考站的处理效果比仅存在于基站的效果要好;参考站无噪声情况下,电道或者磁道作为参考道对处理结果影响不大;基站与参考站之间的磁场相关性、基站磁场噪声与参考站磁场的非相关性与远参考处理效果关系密切.通过对实际资料的计算也有上述结论.
The effect of far reference processing on the sounding curve is studied under different noise intensities, different reference channels, and noise only when there exist base stations or reference stations. By simulating the standard time series, it is found that the base station has non-correlated noise with different SNRs (SNR = 10.58 d B), far reference to the earth magnetometer can restore the sounding curve more perfectly and the SNR (0.2 d SNR = 0.2 d B), the effect of far reference earth magnet on the sounding curve quality improvement is limited; the same noise exists only at the base station or the reference station to distinguish the effect of data processing: the effect that the noise exists only in the reference station is better than the effect only in the base station It is better for the reference station to have no influence on the processing results when the reference track is noiseless. The correlation between the base station and the reference station, the non-correlation between the base station magnetic noise and the reference station magnetic field, and the far reference processing effect Close relationship between the calculation of the actual data also have the above conclusion.