Evaluation of Impedance Measurement Using Spread Spectrum Time Domain Reflectometry
- University of Utah, Salt Lake City, UT (United States); University of Utah
- University of Florida, Gainesville, FL (United States)
- University of Utah, Salt Lake City, UT (United States); Livewire Innovation, Camarillo, CA (United States)
We evaluate the feasibility of spectral time domain reflectometry (STDR) and spread spectrum time domain reflectometry (SSTDR) as a new modality for impedance measurement to test energized/noisy systems over a very broad frequency spectrum (near dc to gigahertz) as well as multiple channels in parallel. We simulate how the S/SSTDR signal parameters (signal-to-noise ratio (SNR) frequency and length of the pseudo-noise (PN) signals) affect the accuracy and usable frequency band for reflection coefficient and impedance measurement. An initial measurement validation is included. Here, we conclude with a recommendation of what will be required for a viable multichannel impedance (and reflection, transmission coefficient) measurement system for either energized or nonenergized systems, in noisy environments, that can test multiple channels simultaneously.
- Research Organization:
- University of Utah, Salt Lake City, UT (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- Grant/Contract Number:
- EE0008169
- OSTI ID:
- 2234294
- Journal Information:
- IEEE Transactions on Instrumentation and Measurement, Journal Name: IEEE Transactions on Instrumentation and Measurement Vol. 72; ISSN 0018-9456
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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