|
|
|
| A Correlation-peak Fining Algorithm for Group Delay Measurement of Radio Frequency System |
| Lu Chen-xi①② Li Hong-yu① Nian Feng①② Feng Ke-ming①② |
①(Beijing Institute of Radio Metrology and Measurement, Beijing 100854, China)
②(Science and Technology on Metrology and Calibration Laboratory, Beijing 100854, China) |
|
|
|
|
Abstract 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 de-noising 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.
|
|
Received: 02 February 2013
|
|
|
|
Corresponding Authors:
Lu Chen-xi
E-mail: chenxi_lu@126.com
|
|
|
|
|
|
|
2013, Vol. 35 
