Performance evaluation of algorithms for SAW-based temperature measurement.
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.
Schuster
Stefan
S
Institute for Communications and Information Engineering, Johannes Kepler University, AT-4040 Linz, Austria. s.schuster@icie.jku.at
Scheiblhofer
Stefan
S
Reindl
Leonhard
L
Stelzer
Andreas
A
D000162:Acoustics; D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods*; D008962:Models, Theoretical; D013817:Thermography / Q000295:instrumentation* / Q000379:methods; D014159:Transducers