Localization of an RF source inside the Human body for Wireless Capsule Endoscopy

This is the authors' abstract. We don't add key points for this paper.

This paper presents a method based on the phase difference of arrival and the non-linear least square estimation to localize a radio-frequency (RF) source, e.g a wireless capsule endoscope, inside the human body. The phase difference of arrival at multiple frequencies of a signal is used to estimate