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Node Localization based on Anchor Placement using Fuzzy C-Means in a Wireless Sensor Network

Irid Sidi Mohammed Hadj, Hadjila Mourad, Hachemi Mohammed Hicham, Souiki Sihem, Mosteghanemi Reda, Mostefai Chaima

International Journal of Electronics and Telecommunications

2023

Vol. 69, No. 1

99--104

Localization is one of the oldest mathematical and technical problems that have been at the forefront of research and development for decades. In a wireless sensor network (WSN), nodes are not able to recognize their position. To solve this problem, studies have been done on algorithms to achieve accurate estimation of nodes in WSNs. In this paper, we present an improvement of a localization algorithm namely Gaussian mixture semi-definite programming (GM-SDP-2). GMSDP is based on the received signal strength (RSS) to achieve a maximum likelihood location estimator. The improvement lies in the placement of anchors through the Fuzzy C-Means clustering method where the cluster centers represent the anchors’ positions. The simulation of the algorithm is done in Matlab and is based on two evaluation metrics, namely normalized root-mean-squared error (RMSE) and cumulative distribution function (CDF). Simulation results show that our improved algorithm achieves better performance compared to those using a predetermined placement of anchors.

Error Analysis and Antenna Array Placement Optimization of Localization System for Partial Discharge in Substation

He J., Li M., Chen G., Wang Z.

Przegląd Elektrotechniczny

2014

R. 90, nr 7

104--107

The measurement and diagnosis of partial discharge (PD) is accepted as one of the most valuable means for assessing the quality of high voltage (HV) power apparatus and its running status. However, the current partial discharge monitoring mainly based on equipment, which needs multi-process test equipment, high cost, and large maintenance engineering. This paper introduced the use of four antennas array to receive ultra-high frequency (UHF) signal, and define 3-D coordinate system, then located PD source in the field of the substation. Furthermore, this paper discussed the principles of the location algorithm based on time difference, analyzed the origin of its location error, then the connection of location error and the placement of antenna array and the error of time difference has been discussed theoretically. Finally, this paper provided the optimal placement of the radio frequency antenna array.

W artykule opisano czteroantenowy odbiornik sygnału UHF w zastosowaniu do analizy źródła wyładowania niezupełnego. Analizowano błąd określenia pozycji źródła w zależności od rozłożenia systemu anten.

DELA: A displacement estimated localization algorithm in the opportunistic communication based wireless sensor network

Deng Y., Yang Y., Xiong Y., Li L.

Przegląd Elektrotechniczny

2013

R. 89, nr 1b

112--115

Localization is one of the key problems in our system to collect the data of movement rule of sediment transport by wind for the desertification research. We designed a full covered deployment scheme of base station for providing the basic service of data forwarding and localization first. Then we proposed a displacement estimated localization algorithm (DELA), which can help node to measure its displacement during each movement and then calculate the position. The experiment proved that the DELA is better than the trilateration in this scene.

Przy badaniach pustynnienia i zbieraniu danych w warunkach ruchu osadów porywanych przez wiatr, jednym z kluczowych problemów jest lokalizacja. W opracowaniu, po pierwsze, dla zapewnienia podstawowej obsługi przekazywania danych o przemieszczaniu i lokalizacji, zaprojektowano układ stacji bazowych, całkowicie pokrywający rozmieszczenie węzłów pomiarowych. Następnie, zaproponowano algorytm szacunkowej lokalizacji przemieszczania (DELA), który pomaga węzłowi zmierzyć przemieszczenia podczas jego ruchu i następnie obliczyć pozycję. Badania eksperymentalne wykazują, że DELA daje lepsze wyniki niż trilateracja.