Patent Document ID: 8447330
Application ID: 13455848
Patent Status: 1

Claim One:
1. A system for wireless location estimation of a mobile node using radio transceivers with polarization diversity, said system comprising: a plurality of fixed transmission modules at pre-defined fixed reference nodes distributed over a predetermined area adapted to transmit fixed reference signals; a mobile node transmission module at the mobile node adapted to transmit mobile reference signals with respect to the mobile node and the plurality of pre-defined fixed reference nodes; a horizontal polarization module adapted to horizontally polarize the transmitted mobile reference signals; vertical polarization module adapted to vertically polarize the transmitted mobile reference signals; a receiver module adapted to receive the horizontally polarized signals and vertically polarized signals; a measurement module adapted to measure signal strength of the received signals; a derivation module adapted to derive range of the received signals; a profile creation module adapted to create a profile of said derived range with reference to said measured signal strength, said profile creation module further comprising a quadrature combining module adapted to create a profile by quadrature combining said measured signal strength from said horizontally polarized signal and said vertically polarized signal; and a trilateration module adapted to employ a trilateration with virtual sampling algorithm to determine localization of said node using said created profile, thereby providing the location estimation of said mobile node.