DOI: 10.3724/SP.J.1146.2013.00221

Journal of Electronics & Information Technology (电子与信息学报) 2013/35:12 PP.2921-2926

A Correlation-peak Fining Algorithm for Group Delay Measurement of Radio Frequency System

A fining algorithm of correlation peak is proposed for measuring group delay of Radio Frequency (RF) systems to improve the measurement precision. This algorithm requires lower sampling rate by interpolating the signals before correlation operations, and obtains higher measurement precision than classic methods. Wavelet denoising is also introduced to enhance the robustness under low Signal-to-Noise Ratio (SNR). Simulations based on matlab show that the proposed method can obtain the delay part less than the sampling interval more precisely, and prove its effectiveness and advantages.

Key words:Signal processing,Radio Frequency (RF) system,Group delay measurement,Correlation peak fining

ReleaseDate:2014-07-21 17:04:39