Wireless sensor networks have the potential to great significant subsystems of networks applications. Tracking remote targets is an important wireless network application in both military and non-military fields for applications like finding objects or humans or guiding wireless robots in hard to reach areas e.g. nuclear-power plants, etc. Tracking mobile targets involves detection and localization of the object of interest by processing the information provided by the remote nodes along with their location and route. Actually, target tracking is main problem in sensor network. Where it's detect and how accurate position can measured.