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Acta Armamentarii ›› 2012, Vol. 33 ›› Issue (6): 764-768.doi: 10.3969/j.issn.1000-1093.2012.06.022

• Research Notes • Previous Articles    

Performance Analysis of Time Delay Estimation for Linear Frequency-modulated Pulse Based onFractional Fourier Transform

DENG Bing1, WANG Xu1, TAO Ran2, LIU Xian-zhong1   

  1. (1.Department of Electronic and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001,Shandong, China; 2.Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China)
  • Received:2011-03-31 Revised:2011-03-31 Online:2014-03-04
  • Contact: DENG Bing E-mail:navy_dbing@tom.com

Abstract: The time delay estimation for linear frequency-modulated (LFM) pulse based on the fractional Fourier transform was analyzed in the fractional Fourier domain, taken the time domain performance of linear frequency-modulated pulse compression as reference. Also, the difference between these two methods was discussed in digital signal processing. It is found that they have almost the same output signal to noise ratio, pulse-width compression ratio and peak amplitude ratio. Furthermore, the latter has higher precision in the time delay estimation in digital implementation, needs less data rate, and has more potential.

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