Speaker
Description
The Australian VGOS telescopes offer the capability of observing GNSS satellites in L-band, which is not common for traditional VLBI telescopes. Dual-band observations from several GPS satellites were recorded from the three telescopes and graciously shared by the University of Tasmania. Based on the correlation between the recorded samples and locally generated replicas, the signal traveling time can be estimated and compared with either GNSS products or geometric calculations based on the knowledge of the station and satellite positions. Characterizations can be done for ionospheric delay related parameters (e.g. Total Electron Content) and eventually for station clocks and compared to corresponding results from GNSS and VLBI data.
The interest in this study is two-fold. Firstly, it allows to process the same signal with different hardware belonging to two of the major geodetic techniques, opening the door to a fair comparison between them. Secondly, it demonstrates the concept of single operations in view of the GENESIS mission (see dedicated poster).
