RSSI Based Positioning System for WSN with improved Accuracy

Finding location accurately in sensor network is a major issue. There are different approaches for localization categorizes as range based and range free. Through this research work we have increases the localization accuracy by iterative methods to gain the maximum possible accuracy level. The method starts with a rough base value by assuming the location using RSSI based weighted centroid methods and goes through several steps by using the basic rules for drawing a triangle. We have tested our methodology using COOJA simulator and it is proved that the method converges with high accuracy in few steps.