GPS L5 Software Receiver Implementation in FGI-GSRx

As a part of GPS modernization project U.S has introduced a third civil signal called L5. The new signal is intended to satisfy the challenging demands for safety-of-life transport and applications requiring higher precision. A software receiver for GPS L5 signal has been implemented and tested with the FGI-GSRx software-defined multi-frequency multi-GNSS receiver. This paper outlines the implementation of GPS L5 signal processing chain and offers a brief description of the L5 signal characteristics. It also demonstrates the comparison between GPS L1 C/A and L5 signals at different phases. Due to its modern signal characteristics and greater processing capacities, GPS L5 is expected to perform better than the legacy GPS L1 C/A signal.