Abstract
A multi-channel, multi-system and multi-frequency GNSS software receiver was developed with C++ code. The software receiver takes digital intermediate frequency (IF) data as its input. It performs acquisition, tracking and navigation solution on a standard PC with C++ programs instead of hardware. It is capable of acquisition and tracking of COMPASS B1C code and GPS L1C/A code. An IF software signal generator was developed to verify functions and performances of the software receiver. This generator can simulate the COMPASS B1(C code) and GPS L1 (C/A code) constellation signals. The outputs of the signal generator were compared with the outputs of the receiver. The results show that there is less error. The correctness of the software receiver was inspected.
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