SYSTEM FOR WIRELESS LOCATIONS ESTIMATION USING RADIO TRANSCEIVERS WITH POLARIZATION DIVERSITY

摘要

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