Abstract
In this letter, we zoom in on the distance estimation in a chirp-based hybrid radio-frequency (RF)-acoustic ranging system. We present an ultra-low-power solution based on zero-crossing demodulation. We have designed an experimental prototype to validate the approach and compared the power usage, accuracy, and precision of this ranging system with a conventional method. Our measurements show that an accuracy and precision below 5 cm can be obtained for a mobile sensor node that has a lifespan of over 3794 days or ∼10 years, at an update rate of 1 Hz. This constitutes a four times improvement with respect to a conventional analog-to-digital converter based indoor ranging techniques. The provided method can be extended to a system for indoor localization and opens the possibility to implement RF backscattering-based solutions for fully passive nodes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
