Research on a carrier synchronization method for digital radio compass

Radio compass called automatic direction finder (ADF) is a basic navigation equipment. The traditional radio compasses were implemented with analog circuit, which suffered low precision. The development of software radio technology and DSP technology has made the software radio compass (SRC) possible. The existed SRC needs to convert three input signals to a fixed frequency at the same time and it's hard to synchronize. In this paper, a new method to implement the carrier synchronization is presented and simulated. The simulation results shown the proposed approach can meet the specified radio compass performance.