TDOA positioning accuracy performance evaluation for arc sensor configuration

In this paper we present time difference of arrival (TDOA) positioning accuracy performance evaluation for the case, when sensors are arranged in arc configuration. Performance evaluation is implemented through simulation model including TDOA system and link level model subsystems. TDOA system level model represents radio links between transmitter (emitter) and receivers (sensors) in 2-dimensional layout taking into account actual pathloss. TDOA link level model represents signal modulation, sampling rate, additive noise and cross-correlation calculation. Resulting estimates reveal twentyfold RMSE increase for the case of arc with respect to round sensor configuration.