High Resolution Position Tracking Using Low Frequency Linear Chirp Signals

Position tracking functionality has many applications and is becoming increasingly important. While many position tracking systems, such as GPS and eLoran, are available, none of the existing systems are capable of indoor/outdoor localization with close to one-meter accuracy. In this paper, we aim to fill this gap by proposing a terrestrial position tracking system relying on low-frequency chirp signals and enhancing the distance resolution using zero padding. Experimental results highlight the efficacy of our proposal.