Signal Processing System for Seismic Exploration Based on Laser Doppler Effect

Author

Lei, Shao ; Fang, Shen ; Xu, Linlin ; Jiang, Chengzhi ; Liu, Hongli ; Huang, Fuxiang

Volume

1

fYear

2006

fDate

16-20 2006

Abstract

In order to improve the resolution of seismic acquisition, a new signal processing system for seismic exploration based on laser Doppler effect is proposed with an optimized differential optical configuration. The frequency bandwidth is properly determined by analyzing the frequency of the Doppler signal. The velocity, displacement, acceleration and frequency to be measured can be real-time obtained by frequency/voltage (F/V) converting the FM Doppler signal. A 100 dB dynamic range and the linear frequency range of 1.0 to 1000 Hz are realized. It is proved by experiments that the measurement accuracy of amplitude and frequency respectively are 0.6% and 1.0%. Obviously, the technological parameters are satisfactory, and the signal processing system for seismic exploration based on laser Doppler effect can be employed to explore in physical geography

Keywords

Doppler effect; geophysical prospecting; geophysical signal processing; seismology; signal resolution; voltage-frequency convertors; 1.0 to 1000 Hz; FM Doppler signal; differential optical configuration; frequency-voltage conversion; laser Doppler effect; linear frequency range; physical geography; seismic acquisition resolution; seismic exploration; signal processing system; Bandwidth; Doppler effect; Frequency conversion; Frequency measurement; Optical frequency conversion; Optical signal processing; Seismic measurements; Signal analysis; Signal processing; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2006 8th International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-9736-3

Electronic_ISBN

0-7803-9736-3

Type

conf

DOI

10.1109/ICOSP.2006.345496

Filename

4128911