NDLI: Bilateration-based Position Estimation of Sensor Nodes for UAV-assisted Wireless Power Transfer Systems

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Bilateration-based Position Estimation of Sensor Nodes for UAV-assisted Wireless Power Transfer Systems

Content Provider	ACM Digital Library
Author	Asami, Tohru Kawahara, Yoshihiro Shigeta, Ryo Suzuki, Kouta
Abstract	In this paper, we present a navigation algorithm for unmanned aerial vehicles (UAVs) for battery-less agricultural sensor systems. In order to efficiently power sensor nodes from UAVs using wireless power transfer, an appropriate UAV navigation algorithm is necessary. UAVs can locate a certain sensor roughly, but they cannot find the exact location. In our proposed method, a UAV draws circles using each point as a center and each distance as a radius. Then, it counts the number of intersections of the circles and quickly approximates the exact location of the sensor with the densest intersections as a near-optimal point. There have been several studies of battery-less wireless sensor networks (WSNs) for agricultural sensing, and some recent studies have used optimal tracking methods for UAVs to wirelessly power sensor nodes. However, these proposed systems were designed without considering the time needed to complete the wireless power transfer to each node. Because a UAV's battery capacity is limited, the area coverable by a UAV is determined by the amount of time needed to power all the sensor nodes in the field. Thus, if a navigation algorithm can enable UAVs to reach the near-optimal point more quickly, fewer flight tasks will be needed to cover the fields, which will reduce system operating costs. We compared our proposed method to a conventional hill-climbing algorithm in terms of navigation accuracy and time needed to power the sensor nodes. The results showed that the proposed algorithm performed 30% better than the conventional algorithm.
Starting Page	66
Ending Page	71
Page Count	6
File Format	PDF
ISBN	9781450347594
DOI	10.1145/3004010.3004015
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-11-28
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Wireless sensor network Wireless power transfer Agricultural sensing Uav
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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