Time-delay estimation for sub-sampling sinusoidal signals

To the problem of time-delay estimation for sub-sampling sinusoidal signals, this paper proposed a novel method composed of multi-period sampling and multi-layer correlation. This method can reduce the complexity of estimation and improve the range of time-delay estimation and its stability. It also has an excellent performance to reduce the effect of noise and interference. The important contribution of this new method is that it adapts to high frequency (HF) signal processing such as in radar, electronic warfare (EW), etc. It will accelerate the digital receiver realization of HF system. Simulations presented in this paper show that the performance and advantage of the new method,is obvious.