Time Difference of Arrival (TDOA) techniques use differences in the travel time of RF signals to pinpoint their location of origin. 3D TDOA allows signals’ altitude, as well their latitude and longitude, to be calculated.

In this White Paper, we discuss the basic operating principles of 3D TDOA, explore some practical limitations on its accuracy, examine some applications of the technique, and see an example of it being used in practice.

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