Method and system for timing synchronization in skip-code spread spectrum communication

Abstract

The application discloses a kind of skip code spread spectrum communication timing synchronization method and system, using signal detection and frame synchronization method, timing coarse synchronization is carried out, can according to electromagnetic environment change real-time calculation noise bottom, the ratio of useful signal non-coherent processing result and noise signal non-coherent processing result is used as detection quantity, electromagnetic environment change is not sensitive, can effectively avoid the risk of signal false capture or miss capture;Timing fine synchronization method is used, sampling error is estimated by the way of correlation peak fitting, and online look-up table and time domain linear filtering method is used to realize real-time correction of sampling error, with high estimation accuracy under low signal-to-noise ratio, good real-time performance, sampling error estimation and correction are carried out in time domain, effectively reduce hardware resource overhead, can adapt to long-distance and high-reliability broadband communication demand under low power, can be applied to short-time burst communication and continuous wave communication working scene.

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