Abstract: Wireless sensor network (WSN) is employed to gather and forward information to the destination. It is very crucial to know the location of the event or collected information. This location information may be obtained using GPS or localization technique in wireless sensor networks. Localization is a technique to obtain the location of sensor nodes in the network. Localization of nodes in sensor network is a motivating analysis space, and lot of works are done to this point. It is highly required to design energy aware, economical and scalable localization techniques for WSNs. In this paper, we have done analyse of various localization techniques, and few possible future research directions.

Keywords: Wireless sensor network (WSN), sensor network, Localization Techniques, actors networks.