Loran-C Signal Fast Acquisition Method and Its Performance Analysis

The combination of Loran-C and Global Navigation Satellite System (GNSS) has become a?new?application?mode, which provides reliable positioning, navigation and timing service for users. Based on the research on Loran-C signal system, considering its long signal acquisition time and poor anti-noise performance of Loran-C receiver, this paper proposes a new method of anti-noise and fast acquisition for Loran-C signal, which is based on delay correlation; and verifies the practicality of this method by theoretical analysis and carrying out simulation test. This method solves successfully the problem of fast acquisition of Loran-C signal in heavy noise environment. The result shows that the acquisition time of this method is less than 200 ms, the anti-noise property is less than -10 dB.