Relative location estimation in wireless sensor networks Patwari, N. ; Hero, A. O. ; Perkins, M. ; Correal, N. S. ; O'Dea, R. J. Abstract Publication: IEEE Transactions on Signal Processing Pub Date: August 2003 DOI: 10.1109/TSP.2003.814469 Bibcode: 2003ITSP...51.2137P