Improvement of indoor positioning accuracy of ultra-wide band sensors by using big bang-big crunch optimization method

Yıl 2018, Cilt: 24 Sayı: 5, 921 - 928, 12.10.2018

Taner Arsan

Öz

Ultra-wide
Band technology is an emerging technology that offers successful solutions in
many indoor positioning systems and performs better than other methods. In this
study, an indoor positioning system using Ultra-wide Band (UWB) sensors was
developed and it was aimed to increase the accuracy level of the standard
equipment with the additional algorithms used while reducing the average error.
For this purpose, the Big Bang-Big Crunch (BB-BC) optimization method has been
applied to the experimental indoor positioning system and the positive effect
on the measurement accuracy has been proved by the tests made. An area of 39.76
m² was selected as a test area of 7.35 m × 5.41 m and three different Ultra-wide Band receivers were installed at
a height of 2.85 m on a specially designed ceiling system and a total of 10.920
measurements were taken from 182 test points for 60 seconds. By correcting the
measurement results with the Big Bang - Big Crunch optimization algorithm, the
average error was reduced from the previous 20.72 cm to 15.02 cm, thus the
accuracy of the measurement results were improved.

Anahtar Kelimeler

Indoor positioning, Time of flight, Ultra-wide band sensors, Big bang-big crunch optimization method, Behavior mapping

Büyük patlama büyük çöküş optimizasyon yöntemi ile ultra geniş band sensörlerinin iç mekân konum belirleme doğruluklarının iyileştirilmesi

Öz

Ultra
geniş band teknolojisi, birçok iç mekân konum belirleme sisteminde başarılı
çözümler sunan, diğer yöntemlere kıyasla daha iyi performans gösteren,
gelişmekte olan bir teknolojidir. Bu çalışmada, ultra geniş band (Ultra Wide
Band-UWB) sensörler kullanılarak bir iç mekân konum belirleme sistemi
geliştirilmiş ve kullanılan ek algoritmalarla, standart donanımların sağladığı
doğruluk düzeyi arttırılırken aynı zamanda ortalama hatayı azaltmak
hedeflenmiştir. Bu amaçla Büyük Patlama - Büyük Çöküş (Big Bang-Big Crunch veya
BB-BC) optimizasyon yöntemi deneysel iç mekân konumlandırma sistemine
uygulanmış ve ölçüm doğruluğu üzerindeki olumlu etkisi yapılan testlerle
kanıtlanmıştır. Test alanı olarak 7.35 m × 5.41 m boyutlarında 39.76 m²'lik
bir alan seçilmiş ve özel olarak tasarlanmış bir tavan sistemine yerden 2.85 m
yüksekliğe üç farklı UWB alıcı yerleştirilmiş ve 182 adet test noktasından 60 sn.
süreyle toplam 10.920 ölçüm alınmıştır. Ölçüm sonuçları Büyük Patlama - Büyük
Çöküş optimizasyon algoritması ile düzeltilerek, ortalama hatası önceki 20.72 cm değerinden 15.02 cm’ye düşürülmüş, böylelikle ölçüm sonuçlarının
doğruluğu arttırılmıştır.

Anahtar Kelimeler

İç mekân konum belirleme, Uçuş zamanı, Ultra geniş band sensörler, Büyük patlama büyük çöküş optimizasyon yöntemi, Davranış haritalama

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