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Performance evaluation of algorithms for SAW-based temperature measurement

2006; Institute of Electrical and Electronics Engineers; Volume: 53; Issue: 6 Linguagem: Inglês

10.1109/tuffc.2006.1642516

2373-7840

Stefan Schuster, Stefan Scheiblhofer, Leonhard Reindl, Andreas Stelzer,

Soil Moisture and Remote Sensing

Whenever harsh environmental conditions such as high temperatures, accelerations, radiation, etc., prohibit usage of standard temperature sensors, surface acoustic wave-based temperature sensors are the first choice for highly reliable wireless temperature measurement. Interrogation of these sensors is often based on frequency modulated or frequency stepped continuous wave-based radars (FMCW/FSCW). We investigate known algorithms regarding their achievable temperature accuracy and their applicability in practice. Furthermore, some general rules of thumb for FMCW/FSCW radar-based range estimation by means of the Cramer-Rao lower bound (CRLB) for frequency and phase estimation are provided. The theoretical results are verified on both simulated and measured data.