Exact and approximate solutions of source localization problems
2008 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, Vol. 56, no 5, 1770-1778 p.Article in journal (Refereed) Published
We consider least squares (LS) approaches for locating a radiating source from range measurements (which we call R-LS) or from range-difference measurements (RD-LS) collected using an array of passive sensors. We also consider LS approaches based on squared range observations (SR-LS) and based on squared range-difference measurements (SRD-LS). Despite the fact that the resulting optimization problems are nonconvex, we provide exact solution procedures for efficiently computing the SR-LS and SRD-LS estimates. Numerical simulations suggest that the exact SR-LS and SRD-LS estimates outperform existing approximations of the SR-LS and SRD-LS solutions as well as approximations of the R-LS and RD-LS solutions which are based on a semidefinite relaxation.
Place, publisher, year, edition, pages
2008. Vol. 56, no 5, 1770-1778 p.
Computer and Information Science
IdentifiersURN: urn:nbn:se:uu:diva-104189DOI: 10.1109/TSP.2007.909342ISI: 000255182400003OAI: oai:DiVA.org:uu-104189DiVA: diva2:219507