Designing a Universal GNSS Simulator for Pseudorange Calculation

Abstract

The development of GNSS (Global Navigation Satellite System) receivers, especially mass market receivers, has to face cost constraints. To reduce the time to market, and thus the costs, the usage of a GNSS signal simulation facility is one possibility. GNSS signal simulators provide an effective tool for simulating the behavior of satellite-based navigation systems. The challenge is that they have to be model the real world as close as possible, taking satellite orbits, atmospheric effects, satellite clock errors, multipath effects, etc. into account. Thus these simulators achieve lower hardware complexity and precise position determination even when proper signal from satellites is absent. The aim is to design a simulator which can simulate the satellite signals while keeping the all the errors as low as possible while keeping the G.D.O.P. in the range of 4 to 5.
DOI: 10.17762/ijritcc2321-8169.150176