Indoor positioning using low cost GPS receivers: Tests and statistical analyses

In recent years, GPS chipset technologies have been changed completely in order to allow for positioning under extreme conditions, such as in indoor environments. The necessity of always having a positioning capability is rising, but what accuracy level can be reached? Some specific tests have been carried out to estimate the limits for indoor positioning. It has also been evaluated whether this technique can be used for GIS applications. A low cost receiver tailored to indoor positioning, has been used in several tests in a test field, in both kinematic and static mode. The results show that the obtained performance in indoor positioning is encouraging, but still needs to be improved using additional sensors (i.e. INS, RF).