Abstract:The background noise of the second sampling data of four kinds of broadband instruments in Xinjiang during quiet period is analyzed, and the time-frequency characteristics of the signals recorded by various instruments under seismic waves and wind disturbance events are discussed. The results show that the noise level of RZB-2 borehole strainmeter is the best, and the response ability of VP type vertical pendulum to high-frequency signals(microseisms frequency range) is the best. Whether the instrument can record more geophysical signals or high frequency information is not only related to its own noise level, but also related to its response ability to the signal in this frequency band.
ZHAO Ying,WANG Dijin,ZHANG Yan et al. Time-Frequency Characteristics of Fixed-Point Deformation Second-Sampling Instrument Signals in Xinjiang[J]. jgg, 2024, 44(6): 648-653.