A Review of DV-Hop localization algorithm

In recent years, the wireless sensor network has become a fundamental research area in smart farm and smart irrigation applications. In smart farming applications, the sensors can be scattered randomly via an aircraft, or an airplane,to detect and collect a set of climatic and environmental parameters. The data collected by the sensor nodes don't matter if their locations are unknown. Therefore, it is necessary to determine the location of sensor nodes for correctly interpreting the detected information of communication between nodes. In this case, the location of the sensor nodes is carried out by the use of a set of localization systems such as GPS, GSM, and UWB. These last ones produce a major drawback in terms of huge energy consumption, high cost, and low accuracy in some zone. To resolve these problems, extensive research is being carried out to integrate the range-based or range-free localization algorithm into nodes sensors to improve the localization accuracy. In this paper, we present the performance evaluation of some improved versions of the DV-HOP localization algorithm existing in the literature. Thus, we study the impact of variation in the number of anchor nodes, the number of unknown nodes, and the communication range on the minimum mean square error(MMSE) of these algorithms. In order to make a comparison between the DV HOP algorithm and these versions, we extract a more practical, innovative version.