Performance of TOA and TDOA in a Non-homogeneous Transmitter Network Combining GPS and Terrestrial Signals
نویسندگان
چکیده
The time of arrival (TOA) and the time difference of arrival (TDOA) measurements are transformable to each other without a loss of information regarding positioning and thus the position estimations based on them should be theoretically equivalent. It is proved by Shin [1] in case of homogeneous and uncorrelated ranging sources with the weighted least square (WLS) method. In this paper, their equivalence is proved in a general case and examined under various practical scenarios including non-homogeneous and correlated ranging sources and suboptimal weighting methods such as the least square (LS) by simulation.
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