Dataset - Simulation results GNSS raytracing INTOMO

The 3D ray-tracing algorithm is based on the reconstruction of the signal path within the grid model (3D refractivity field). For our studies, an extension of the original 3D ray-tracing module from ATom (Atmospheric Tomography) GNSS software package [37] is used. The necessary modifications were inspired by Javaherian et al. [44]. The first step of ray-tracing in our approach (shooting<br> technique) is based on the prior knowledge of transmitter and receiver positions, as well as information about weather parameters and thus, refraction at nodal points of the grid. The transmitter and receiver are the GPS satellite and the LEO satellite, respectively. In the current version, coordinates are delivered by atmPhs files in an earth-centered inertial (ECI) coordinate system [45].