An enhanced trilateration algorithm for indoor RSSI based positioning system using zigbee protocol
| Main Author: | Ainul, Rafina Destiarti |
|---|---|
| Format: | Article PeerReviewed application/pdf |
| Bahasa: | eng |
| Terbitan: |
Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi Telkom Purwokerto
, 2022
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| Subjects: | |
| Online Access: |
http://repository.ubaya.ac.id/42917/ https://ejournal.st3telkom.ac.id/index.php/infotel/article/view/822 |
Daftar Isi:
- The location information of the object based on wireless communication has a significant role in several Wireless Sensor Network (WSN) applications. Some applications require the appropriate details on the object’s position. The advantages of Zigbee as part of Radio Frequency (RF) technology include inexpensive, broad scalability, sufficient availability, and suitability for Indoor Positioning System (IPS) topology. In this paper, we propose IPS using a Received Signal Strength Indicator (RSSI) based Zigbee protocol. The proposed approach is based on the enhancement of the Trilateration algorithm. The main concept of conventional trilateration is using the three strongest RSSI from the reference node. However, the instability from measured RSSI influenced its estimation result. Therefore, quadratic weighted is added to this proposed scheme as the enhanced trilateration algorithm. The estimated distance output from the conventional trilateration algorithm will be recalculated for the weighted value and multiplied by each reference node, producing a lower estimation error. The simulation result shows that using an enhanced trilateration algorithm can improve the accuracy level of estimated position up to 90.55% with mean square error (MSE) of 2.03 meters stacked up with only using conventional trilateration is attained high estimated error up to 4.31 meters. Keywords – Conventional trilateration, enhanced trilateration, indoor positioning system, MSE, RSSI