Abstract
A closed-form least-squares solution based on time difference of arrival (TDOA) measurements for the three-dimensional source location problem is developed, currently US patent pending [10], by extending an existing closed-form algorithm. Almost all published solutions utilize a single set of the available TDOA measurements. In our solution the full set of the available TDOA measurements is exploited in order to increase the number of nuisance parameters, which are range estimates from the source to the sensors. Simulation results show that these nuisance parameters are useful to obtain accurate vertical source location estimates, even when quasi coplanar sensors are employed.
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