Location and Position Estimation in Wireless Sensor Networks
Muhammad Farooq-i-Azam, Muhammad Naeem Ayyaz

TL;DR
This paper reviews various algorithms and techniques for estimating the location of sensor nodes in wireless sensor networks, emphasizing the importance of localization for data relevance and discussing the limitations of traditional methods like GPS.
Contribution
It provides a comprehensive overview of localization principles, categories, and representative schemes specific to wireless sensor networks.
Findings
Traditional GPS is unsuitable for sensor nodes.
Various algorithms exist based on sensor properties.
Localization is crucial for data contextualization.
Abstract
A wireless sensor network comprises of small sensor nodes each of which consists of a processing device, small amount of memory, battery and radio transceiver for communication. The sensor nodes are autonomous and spatially distributed in an area of investigation. Certain applications and protocols of wireless sensor networks require that the sensor nodes should be aware of their position relative to the sensor network. For it to be significant and to be of value, the data such as temperature, humidity and pressure, gathered by sensor nodes must be ascribed to the relative position from where it was collected. For this to happen, the sensor nodes must be aware of their relative positions. Traditional location finding solutions, such as Global Positioning System, are not feasible for wireless sensor nodes due to multiple reasons. Therefore, new methods, techniques and algorithms need to…
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