Improved location accuracy using Bio-Inspired Optimization Algorithm Localization of sensor nodes using HSMM 2.2 REVIEW BASED ON LOCALIZATION OF SENSOR NODES USING HMM

Localization is a difficult problem to be solved because of the demanding requirements of low cost, high energy efficiency, scalability for the network size and the practical issues associated with node deployments. A probabilistic-based approach is used for localization, where the system determines probability of the target that can be located at any point within the environment. After determining these probabilities across the area, the most likely location of the target can be determined by additional computing. There has been a significant research activity stimulated by the increasing demand for accurate localization in recent years.