An Effective Time Delay Estimation Method Based on Frequency Difference Compensation for Narrowband RF Signals

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• 作者：Guo-hong You ; Zhao-feng Wang ; Tian-shuang Qiu…
• 关键词：Time delay estimation ; Narrowband RF signal ; Frequency difference compensation
• 刊名：Circuits, Systems, and Signal Processing
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：35
• 期：1
• 页码：325-338
• 全文大小：604 KB
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• 作者单位：Guo-hong You (1)
  Zhao-feng Wang (1)
  Tian-shuang Qiu (2)
  Xiao-ping Zhao (2)
  
  1. College of Engineering, Bohai University, Jinzhou, China
  2. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian, China
  
• 刊物类别：Engineering
• 刊物主题：Electronic and Computer Engineering
  
• 出版者：Birkh盲user Boston
• ISSN：1531-5878

文摘

This paper addresses a novel time delay estimation (TDE) method for narrowband RF signals with intermediate frequency difference (IFD). Since IFD is the main factor which affects the TDE precision, we present the frequency detection TDE model with IFD and discuss the effects of the IFD on the TDE. Then, a frequency detection TDE method based on IFD compensation is proposed. Especially, an improved frequency-domain cross-correlation method is adopted to estimate the IFD. The effectiveness of the algorithm is verified by MATLAB simulation. Simulation results demonstrate that the proposed TDE method shows a significant performance improvement over the classical TDE method based on Hilbert transform. Furthermore, the proposed method is also used in the actual system, and its estimation value is very close to the true value, which presents an enormous engineering practicality. Keywords Time delay estimation Narrowband RF signal Frequency difference compensation