Zero Baseline Analysis for Measurement of NavIC-L5 Signal Quality with Real-Time Data

Recently developed Navigation Indian Constellation (NavIC) signal (L5-1176.45 MHz and S-2492.028 MHz) pseudo range and carrier phase measurements are to be used for position, navigation and time computation in different engineering, science and other applications over the Indian sub-continent and its surroundings. To ensure the quality services analysis of signals that are being received is essential. Since, NavIC signal uses complex BPSK on L5 and BoC(5,2) on S-band different analysis methods are to be employed for evaluating the quality. In this research work, NavIC-L5 signal quality is analyzed using zero baseline double difference pseudo range and carrier phase measurements with real time data collected through Septentrio PolaRX5 receivers. Results show that the NavIC signal quality is slightly better (less residual) for GSO satellites. However, the residual is minimum for IRNSS 1C when IRNSS 1B is considered as a reference. Moreover, NavIC GSO signals are less consistent than other 3 GEO satellites signals.