Analysis of experimental CODE products based on GPS L1/L5 signals

In order to meet the demanding accuracy and availability requirements, GPS has introduced L5 signals that are compatible with Galileo E5a signals. These signals are designed to mitigate multipath issues and poor performance in challenging environments such forests and areas affected by jamming. As they are also intended to replace L2 signals in the future, steps must be taken to exploit the modern signal type that is currently broadcast by 20 GPS satellites of blocks IIF and III. This is considered particularly important for some LEO satellites, which rely exclusively on L1/L5 observations.

In addition to standard analysis products based on L1/L2, the CODE (Center for Orbit Determination in Europe) IGS Analysis Center is in the process of testing a prototype processing chain to generate L1/L5-based products, paving the way for GNSS processing to be fully based on L1/L5  signals. The presentation addresses the application of these products to LEO orbit determination and PPP processing of the ground stations, considering different antenna calibrations for IIF satellites. A quantitative validation and comparison with L1/L2-based solutions is also discussed.