Low noise chopper amplifier calibration module
| Autor: | Linsen Xiong, Weiwei Wang, Si Wang, Haonan Wu, Kai Chen, Yuefeng Niu |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Computer science Calibration curve Amplifier Bandwidth (signal processing) 010502 geochemistry & geophysics 01 natural sciences Magnetic field Electric field Electronic engineering Calibration Demodulation Frequency modulation 0105 earth and related environmental sciences |
| Zdroj: | 2016 IEEE Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC). |
| Popis: | Marine CSEM (controlled source electromagnetic method) Acquisition Station needs to accurate observe two magnetic field components (Hx, Hy) and three electric field components (Ex, Ey, Ez). In this paper, a series of calibrations are made for the low noise chopper amplifier, which is used in the electric field signal acquisition hardware circuit. The calibration signal generation and the calibration curve calculation process are analyzed in detail. Through the calibration test, the results show that the calibration method is quick and effective. Besides, the amplifier can precisely determine its bandwidth, and verify low noise characteristics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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