Science & Engineering Research Support soCiety (SERSC)
The localization requirements for mobile nodes in wireless sensor networks are increasing. However, most research papers are based on range measurements between nodes which are often oversensitive to the measurement error. In this paper, the authors propose a location estimation scheme based on moving nodes that opportunistically exchange known positions. The user couples a Linear Matrix Inequality (LMI) method with a barycenter computation to estimate its position. Simulations have shown that the accuracy of the estimation increases when the number of known positions increases, the radio range decreases and the node speeds increase.