The article deals with the possibility of combination of
linear and circular polarized antennas in case of indoor
positioning techniques based on signal strength measurement.
We have investigated the distribution of the received
power by a quasi two-dimensional, own developed ray tracing
model and by measurement in LoS (Line of Sight) and
NLoS (Non Line of Sight) scenarios. The model takes into
account the direct propagation path, the first-and
secondorder
reflected rays as well as the effect of diffraction. The
utilization of linear and circular-polarized (CP) antennas
instead of only linear-polarized (LP) antennas decreases the
standard deviation of the received power and enhances
the effective range. We have performed positioning with the
simulated and measured powers using the mean squared
error method in case of three transmitters. The average
positioning error is significantly reduced by usage of the
two
various types of polarization antennas compared to the use of
merely linearly polarized antennas.
