Abstract
Using the principle of dual-channel cross correlation and the method of repeated sampling, a signal processing system to realize optical fiber ion concentration measurement is developed. A demodulation software is designed, which is effective for weak signal detection. The resolving power of this demodulation approach and its capability of improving signal-to-noise ratio (SNR) are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 892-895 |
| Number of pages | 4 |
| Journal | Guangxue Jishu/Optical Technique |
| Volume | 33 |
| Issue number | 6 |
| Publication status | Published - Nov 2007 |
Keywords
- Correlated demodulation
- Ion concentration measurement
- Low signal noise ratio