Title :
Modeling and simulation of digital sensor in seismic exploration based on SIMULINK
Author :
Zhuan, Yu ; Jie, Wu ; YanFang, Wang
Abstract :
Seismic exploration imposes strict requirements on digital sensor such as large dynamic range and high linearity. Criterions for selecting mechanical parameters of digital sensor are presented for acceptable Brownian noise. System signal and noise transfer functions are then introduced based on high order Sigma-Delta modulation. It is revealed that 5th order Sigma-Delta modulation is required to suppress the quantization noise to negligible level. To point against the requirement to THD (total harmonic distortion), the formulas for THD calculation is derived, constraints to electronics parameters for THD that less than -100 dB is calculated by these formulas. Modeling and simulation of the whole system are carried out, results are inspected and verified with theoretical analysis.
Keywords :
geophysical equipment; geophysical prospecting; geophysical signal processing; harmonic distortion; seismology; sigma-delta modulation; Brownian noise; SIMULINK; digital sensor; high linearity; high order Sigma-Delta modulation; large dynamic range; noise transfer functions; quantization noise; seismic exploration; system signal; total harmonic distortion; Digital modulation; Dynamic range; Force feedback; Force sensors; Laboratories; Linearity; Mechanical sensors; Micromechanical devices; Sensor systems; Transfer functions; 5th σ-Δ modulation; SIMULINK; digital sensor; modeling;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274435
