5Jeo C. Chen, Kung Ralph E. Hudson. Source localization and Beamforming [J]. IEEE Signal Processing Magazine, 2002, (3):30-39.
6Ken-ichi Itoh, Soichi Watanabe, Takuro Sato, etal. Radio Source Positioning using Received Time of Arrival Differences [A]. IEEE Vehicular Technology Conference [C]. 1999, 2062-2066.