[1]HUANG Yilei,YUN Naidan,ZHOU Shiyong.A Study on “Pair Difference” Method to Improve Precision of Signal Travel Time Drift under Low Signal-Noise ratio[J].Journal of Seismological Research,2017,40(04):595-604.
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A Study on “Pair Difference” Method to Improve Precision of Signal Travel Time Drift under Low Signal-Noise ratio
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
40
Number of periods:
2017 04
Page number:
595-604
Column:
主动源专栏
Public date:
2017-09-20
- Title:
- A Study on “Pair Difference” Method to Improve Precision of Signal Travel Time Drift under Low Signal-Noise ratio
- CLC:
- P315.31
- DOI:
- -
- Abstract:
- We adapt numerical tests to study the influence of noises on the precision of travel time drift of active source signals.In traditional ways,deconvolution is used to eliminate the uncertainty of the excitation time of active source.However,this process will significantly lower the signal-noise ratio and thus lead the decline of precision.We put forward a new method named pair difference to replace deconvolution for the sake of eliminating the influence of the active source.The results show that pair difference can effectively eliminate the impact of active source and will not affect the signal-noise ratio,thus improving the precision of extracting travel time drifts.
- References:
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Last Update:
2017-09-20