Analysis of performance of GPS L1 signal generator in GPS L1 signal

摘要

In this paper, we compared and analyzed the performance of generated GPS signal by GPS L1 signal generator with Live GPS signal using the U-Blox receiver. Generally GPS Receiver calculates the position of the satellite by using the ephemeris data received from GPS satellites, and calculates the position of the receiver using the pseudorange. GPS satellites, so it is synchronized, it will then transmit the same data at the same time but the pseudorange because the distance between each satellite and receiver is different. However, For the same signal as the GPS provides the receiver, signal generator is required to generate the RF signal that reflects the pseudorange that different are measured to the same signal as the GPS, not the GPS satellites. This paper provides an overview of a device which can generate an L1 GPS signal at the same time as the GPS signal, and compared with Live GPS signal performance verification for this. As a result, we can check that the navigation of the GPS signals generated in synchronization with the GPS signal can be maintained in the same manner as Live GPS, and the relative pseudorange error between channels are kept constant when generating signals of the long.