Wireless location has become one of the important technologies of wireless sensor network application. Due to the underground wireless location affected by various factors, the positioning system cannot meet the actual demand. In this paper, Time Difference of Arrival (TDOA) and Received Signal Strength Indicator (RSSI) location technologies have been investigated, then various impact factors o...

Considering the context of building management systems with wireless sensor networks monitoring environmental features, this paper presents a proposal of a Fuzzy Logic Based Routing Algorithm (FLBRA) to determine the cost of each link and the identification of the best routes for packet forwarding. We describe the parameters (Received Signal Strength Indicator RSSI, Standard Deviation of the RS...

To verify the validity of our previously reported autonomous indoor localization system in an actual environment, we implemented it in a wireless sensor network based on the ZigBee standard. The system automatically estimates the distance between sensor nodes by measuring the RSSI (received signal strength indicator) at an appropriate number of sensor nodes. Through experiments, we clarified th...

Original scientific paper Localization and tracking of moving target is one of the research focuses of wireless sensor network applications. It has great value in military field. Researchers have proposed many algorithms to complete target localization precisely. Tri-cyclic mutual crosses method based on received signal strength indicator can skip the estimation of transmitting attenuation cons...

<span lang="EN-GB">The recent trend in location-based services has led to a proliferation of studies indoor positioning technology. Wi-Fi</span><span lang="VI"> received signal strength </span><span lang="EN-US">indicator</span><span (RSSI) lang="EN-GB">Fingerprinting and pedestrian dead reckoning (PDR) are the two best representatives from both approac...

This study evaluated an indoor location estimation method using a wireless local area network (LAN). The Fingerprint was used as technique. can estimate the current based on received signal strength indicator and media access control address obtained from LAN points. However, this is greatly affected by changes in radio propagation environment, presence or absence of obstacles reduces accuracy....

In this work, we propose a Web-based monitoring system using wireless sensor networks (WSNs) to measure plant parameters and environmental factors in greenhouses. To detect and send these variables, e.g. leaf temperature, air humidity, a ZigBee-based WSN collects data, which is transmitted by GPRS modules and the Internet to a central computer, and all information, including the dynamic topolog...

With the rapid development in hardware and software of wireless communications, applications of real-time positioning systems have been widely used; among them the Global Positioning System is the most popular [1]. However, the satellite signal is obstructed by the sheltering effect of the building and becomes too weak to be applicable for indoor positioning. Instead, the wireless sensor networ...