{"id":6818,"date":"2021-10-29T08:29:13","date_gmt":"2021-10-29T08:29:13","guid":{"rendered":"https:\/\/www.beaconzone.co.uk\/blog\/?p=6818"},"modified":"2021-10-29T08:29:14","modified_gmt":"2021-10-29T08:29:14","slug":"using-multi-bluetooth-ibeacon-trilateration-for-increased-accuracy","status":"publish","type":"post","link":"https:\/\/www.beaconzone.co.uk\/blog\/using-multi-bluetooth-ibeacon-trilateration-for-increased-accuracy\/","title":{"rendered":"Using Multi Bluetooth iBeacon Trilateration For Increased Accuracy"},"content":{"rendered":"\n<p>There&#8217;s a new paper from the journal Telkomnika Telecommunication, Computing, Electronics and Control on <a rel=\"noreferrer noopener\" href=\"https:\/\/core.ac.uk\/download\/pdf\/349573123.pdf\" target=\"_blank\">Smartphone indoor positioning based on enhanced BLE beacon multi-lateration (pdf)<\/a>. The paper by Ngoc-Son Duong of Vietnam National University describes a relatively simple method to improve location accuracy.<\/p>\n\n\n\n<p>The paper starts by describing trilateration and the author voices the opinion that another method, fingerprinting, requires a lot of effort and isn&#8217;t feasible for practical implementation.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"326\" src=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/mult-trilaterationlayout.png\" alt=\"\" class=\"wp-image-6821\" srcset=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/mult-trilaterationlayout.png 600w, https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/mult-trilaterationlayout-300x163.png 300w\" sizes=\"(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure><\/div>\n\n\n\n<p>The new method makes use of the fact that accuracy is usually good when the received signal strength (RSSI) is -70 dBm or better. The use of more beacons and basing calculations on &#8216;reliable circles&#8217; of higher signal strength, when available, provides for more accuracy.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"203\" src=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/rlosbeacon.png\" alt=\"\" class=\"wp-image-6826\" srcset=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/rlosbeacon.png 350w, https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/rlosbeacon-300x174.png 300w\" sizes=\"(max-width: 350px) 85vw, 350px\" \/><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"448\" height=\"232\" src=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/bluetooth-kalmanfilter.png\" alt=\"\" class=\"wp-image-6819\" srcset=\"https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/bluetooth-kalmanfilter.png 448w, https:\/\/www.beaconzone.co.uk\/blog\/wp-content\/uploads\/2021\/10\/bluetooth-kalmanfilter-300x155.png 300w\" sizes=\"(max-width: 448px) 85vw, 448px\" \/><\/figure><\/div>\n\n\n\n<p>The data is also filtered using a Kalman filter to reduce signal noise by about 37%.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.beaconzone.co.uk\/bluetoothleposition\" target=\"_blank\" rel=\"noreferrer noopener\">Read about Determining Location Using Bluetooth Beacons<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There&#8217;s a new paper from the journal Telkomnika Telecommunication, Computing, Electronics and Control on Smartphone indoor positioning based on enhanced BLE beacon multi-lateration (pdf). The paper by Ngoc-Son Duong of Vietnam National University describes a relatively simple method to improve location accuracy. The paper starts by describing trilateration and the author voices the opinion that &hellip; <a href=\"https:\/\/www.beaconzone.co.uk\/blog\/using-multi-bluetooth-ibeacon-trilateration-for-increased-accuracy\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Using Multi Bluetooth iBeacon Trilateration For Increased Accuracy&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,32,130,293],"tags":[],"_links":{"self":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/6818"}],"collection":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=6818"}],"version-history":[{"count":7,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/6818\/revisions"}],"predecessor-version":[{"id":6830,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/posts\/6818\/revisions\/6830"}],"wp:attachment":[{"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=6818"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=6818"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.beaconzone.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=6818"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}