Analysis of reliable deployment of TDOA local positioning architectures

Local Positioning Systems (LPS) are supposing an attractive research topic over the last few years. LPS ad-hoc deployments of wireless sensor networks for particularly adapt to environment characteristics in harsh environments. Among LPS, those based on temporal measurements stand out their trade-off among accuracy, robustness and costs. But, regardless architecture considered, optimization distribution is required achieving competitive results. Recent studies have shown that under optimized node distributions, time-based cumulate bigger error bounds due synchronization errors. Consequently, asynchronous architectures such as Asynchronous Time Difference Arrival (A-TDOA) been recently proposed. However, A-TDOA supposes concentration time measurement a single clock coordinator making this less versatile. In paper, we present methodology overcoming drawbacks nominal failure conditions with regards synchronous TDOA. Results show strategy allows reduction uncertainties target location by 79% 89.5% enhancement convergence properties 86% 33% TDOA two different application scenarios. addition, maximum points more easily found both configurations concluding benefits high-demanded applications.