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We present in this paper an acoustic indoor location system that allows a simultaneous localization of sources with different location precisions. This is achieved by the use of the time reversal technique and the code-division multiple-access operation. The system was evaluated in terms of accuracy, precision, and location delay. Simulations and experiments were carried out while varying the number...
Localization errors can play an important role in measurements of radio propagation or spectrum utilization, especially in urban environment where GPS localization accuracy is highly varying. In this paper we present a low cost and simple method for mitigating the impact of localization errors, based on multiple GPS receivers. The presented results are based primarily on performance evaluation of...
Generally, in order to detect a direction of soundsource using only 2 microphones, we use TDOA (time delay of arrival) value of relative signals that exist between each wave received to microphones. But this method has a problem in the area which is called cone of confusion, in three dimensional space that would produce the same ITDs and ILDs. So we can't tell the correct front/back direction. In...
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