Target localization using dual tone frequency radio

This paper presents localization using two transmitters, which transmit two signals, different in frequency. A single receiver is used to extract information from received signal. By using simple computations it is possible to extract phase information, which provides information regarding Time Difference of Arrival (TDOA). This paper presents a phase information extraction using compressive sampling from the received signal and minimization of cost function, which provided more accurate results compared to the minimum mean squared estimation. In this paper variable splitting using augmented Lagrange was used to replace two minimum mean square estimations for phase information extraction. The proposed method provided localization results, which are more accurate. The dual tone radio is implemented using Universal Software Radio Peripheral.