INTEGRATION OF GPS AND PSEUDOLITES EFFECT ON THE POSITIONING ACCURACY

S u m m a r y It is well known that for monitoring of engineering structures it is desirable and rec-ommended, that the measuring system used could provide equal precision in all 3D coordi-nates, all the time. In many cases the spaceborn position should be augmented by other additional means, especially when the configuration of satellites is not very good (signal shadowing, small number of satellites). There are many possibilities, one of them is to use additional ranging signals transmitted from ground-based devices simulating satellites. The devices are called pseudosatellites or, more often in abbreviated form, pseudolites (PLs). Most often, they are used to strengthen geometry of positioning. In this paper background theory of pseudolites as well as Dilution of Precision (DOP) is presented. Results of accuracy pre-analysis performed are also given