Abstract:In order to cope with the frequency variation of industrial power and in order to optimize both the rejection band and the fidelity of seismic information, we designed a narrow band autotrack notch filter.The frequency variation range of the industrial power is devided into four bands (48.8-49.3Hz, 49,3-49.7Hz, 49.7-49.9Hz and 49.9-50.2Hz),and the corresponding filter stop bands are designed.At 10 second before every shooting,the frequency of the industrial power is measured by counter, whose output is then input to controlling circuit for the automatic choosing of a proper notch filtering band.The whole set consists of filtering amplification shaping circuit,notch circuit,counter, controlling circuit and driving circuit.
收稿日期: 1984-09-10
引用本文:
王本吉, 狄帮让. 窄带自动跟踪陷波器[J]. 石油地球物理勘探, 1985, 20(4): 411-414.
Wang Benji, Di Bangrang. Narrow band autotrack notch filter. OGP, 1985, 20(4): 411-414.