Sub-GHz Phase-Based Ranging System: Implementation and Evaluation
2020
A prototype phase-detection ranging system based on the automotive remote /tele-control narrowband ARIB STDT108 standard and operating in the sub-GHz band is designed, built, and evaluated. The prototype uses a pair of transceivers operating asynchronously. Problems with the frequency offset and initial phase are overcome by using an exchange sequence. The prototype employing 5. 6MHz bandwidth achieves a distance error of 0.09 m under ideal environments without multipath and 0.88 m in outdoor conditions within the range of $6.0\,\,\mathrm {m}\times 6.0\mathrm {m}$ area.
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