Increasing signal-to-noise ratio and retrieving signal in SNR
| Autor: | M bakhshian, H Abbasi |
|---|---|
| Jazyk: | English<br />Persian |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Iranian Journal of Physics Research, Vol 20, Iss 2, Pp 393-399 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1682-6957 2345-3664 |
| DOI: | 10.47176/ijpr.20.2.37731 |
| Popis: | Detection of weak signals is one of the important issues in spectroscopy. The most important parameters of this field is the signal to noise ratio, which has a significant effect on the accuracy of the final data. In this regard, one of the most successful methods to increase the signal-to-noise ratio is to apply the intensity modulation method. In this method, first, the intensity of the initial signal is modulated, and after entering in the spectrometer, it is demodulated and amplified by a lock-in amplifier and eventually, the desired signal is recovered from various noises. The simulation allows the user to examine and optimize the related parameters for different initial conditions. The present article is dedicated to designing a lock-in amplifier by applying a LabVIEW graphical programming language |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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