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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shmaliy, Y.S. |
| Copyright Year | 2001 |
| Abstract | This paper addresses a statistical analysis of the limiting estimate errors of the time delay (phase difference) between two reflectors of the passive wireless surface acoustic wave (SAW) sensor with single differential measurement. The estimation is provided in a sense of the maximum likelihood function at the ideal coherent receiver in the presence of Gaussian noise. Assuming the Gauss-shape interrogating radio frequency pulse, we prove that linear drifts in its amplitude and phase do not affect the distribution of the sensor phase (and phase difference) at the measurement point. Rigorous and approximate solutions for the mean and mean-square errors, along with the error probability for the estimate to exceed a threshold, are studied in detail. The plots are applied to evaluate the errors in a wide range of signal-to-noise ratios and thresholds. Practical recommendations for designers of the remote SAW sensor interrogating systems are also given. |
| Sponsorship | IEEE Sensors Council |
| Starting Page | 819 |
| Ending Page | 827 |
| Page Count | 9 |
| File Size | 345907 |
| File Format | |
| ISSN | 1530437X |
| Volume Number | 4 |
| Issue Number | 6 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-12-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Wireless sensor networks Surface acoustic waves Phase measurement Acoustic measurements Pulse measurements Statistical analysis Delay estimation Phase estimation Delay effects Acoustic waves phase errors Error probability passive wireless surface acoustic wave (SAW) sensing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Instrumentation Electrical and Electronic Engineering |
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