Sensors | |
An Improved Performance Frequency Estimation Algorithm for Passive Wireless SAW Resonant Sensors | |
Boquan Liu1  Chenrui Zhang1  Xiaojun Ji1  Jing Chen1  | |
[1] School of Electronic Information and Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; | |
关键词: wireless SAW sensors; singular value decomposition; frequency estimation; | |
DOI : 10.3390/s141222261 | |
来源: mdpi | |
【 摘 要 】
Passive wireless surface acoustic wave (SAW) resonant sensors are suitable for applications in harsh environments. The traditional SAW resonant sensor system requires, however, Fourier transformation (FT) which has a resolution restriction and decreases the accuracy. In order to improve the accuracy and resolution of the measurement, the singular value decomposition (SVD)-based frequency estimation algorithm is applied for wireless SAW resonant sensor responses, which is a combination of a single tone undamped and damped sinusoid signal with the same frequency. Compared with the FT algorithm, the accuracy and the resolution of the method used in the self-developed wireless SAW resonant sensor system are validated.
【 授权许可】
CC BY
© 2014 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190019502ZK.pdf | 1536KB | download |