A GNSS receiver generates the replica signal combining the carrier and PRN code for each satellite to acquire and track the GNSS signal, and extract the data bits using the replica signal (Kaplan & Hegarty 2006). Received satellite signals can be regenerated by combining the extracted data bits with PRN code and modulating it with high frequency carrier. The reconstructed satellite signal can reduce the effect of the receiving environment and the amplitude and phase of it can be adjusted according to user requirements. In this paper, we design IF replica signal reconstruction (RSR) module which can reconstruct the received GNSS signal. And we analyze the performance of the RSR module by comparing the position error of the general GNSS receiver in case of using the RF output of it and live GNSS signals. The RSR module is implemented in a GNSS receiver and each RSR output signal is combined and transmitted as the RF signal through a DAC. The performance of the RSR module was analyzed by comparing the navigation errors of GNSS receivers using RSR output against live GNSS signals.

Keywords: GNSS receiver, signal reconstruction, replica signal