RTK-LoRa: High-Precision, Long-Range, and Energy-Efficient Localization for Mobile IoT Devices

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Mayer, P. (author)

RTK-LoRa : High-Precision, Long-Range, and Energy-Efficient Localization for Mobile IoT Devices

Article/chapterEnglish2021

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Institute of Electrical and Electronics Engineers Inc.2021
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LIBRIS-ID:oai:DiVA.org:miun-43096
https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-43096URI
https://doi.org/10.1109/TIM.2020.3042296DOI

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Language:English
Summary in:English

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Cited By :2; Export Date: 20 September 2021; Article; CODEN: IEIMA; Correspondence Address: Mayer, P.; Department of Information Technology and Electrical Engineering, Switzerland; email: mayerph@iis.ee.ethz.ch
High-precision global navigation satellite system (GNSS) is a crucial geolocalization feature enabling a wide range of applications, from mobile Internet-of-Things devices to autonomous drones and self-driving vehicles. Real-time kinematic (RTK) is a GNSS technology that attracting increased interest due to the centimeter precision achievable when wireless communication is present on the devices. On the other hand, sending continuously wireless data increases the energy consumption and the cost of the solution, especially when communication is carried over the 4G network. Due to those drawbacks, RTK is not much exploited in the localization of battery-operated devices. This work combines RTK with low-power long-range communication to achieve submeter precision in an energy-efficient RTK-based system. The proposed system exploits a state-of-the-art RTK-GNSS module combined with a long range (LoRa) to achieve geolocalization with minimal wireless radio infrastructure requirements. An energy-efficient algorithm is proposed and implemented in a microcontroller to have a quick startup and high accuracy. We evaluate three different GNSS modules and compare their performance in terms of power and accuracy. Experimental results, with in-field measurements, show that an average geolocalization precision of tens of centimeters is achievable on a battery-operated wireless end node connected to a single base station used as a geostationary reference anchor placed at kilometers of distance. The peak precision measured is below 10 cm. © 1963-2012 IEEE.

Subject headings and genre

Energy efficiency
geolocalization
long range (LoRa)
low-power sensors
real-time kinematic (RTK)
Energy utilization
Geostationary satellites
Global positioning system
Internet of things
Radio broadcasting
Secondary batteries
Battery operated devices
Energy efficient
Energy efficient algorithms
Global Navigation Satellite Systems
Long-range communications
Real time kinematic
State of the art
Wireless communications
4G mobile communication systems

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Magno, M. (author)
Berger, A. (author)
Benini, L. (author)

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In:IEEE Transactions on Instrumentation and Measurement: Institute of Electrical and Electronics Engineers Inc.700018-94561557-9662

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