The Time Of Arrival (TOA) localization technique in Ultra-Wideband (UWB) wireless sensor networks (WSN) is one of the most promising position location techniques that can be used to estimate the position of passive target objects like people. TOA technique determine the time that the signal takes from the transmitting antenna, the passive target object and the receiving antenna. TOA is then transformed into range distance. TOA algorithm involves solving a non linear equations resulting from estimated TOA ranges measured from multiple receiving antennas. The performance of four different...