Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (6): 59-62.doi: 10.13190/j.jbupt.2014.06.012

• Papers • Previous Articles     Next Articles

Analysis and Design of RLFM Signal

ZHANG Xiao-qian1, YAO Yuan-cheng1, WANG Ling2, QIN Ming-wei1   

  1. 1. Faculty of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
    2. Administrative agency, China Academy of Engineering Physics, Mianyang 621999, China
  • Received:2013-07-04 Online:2014-12-28 Published:2014-10-17

Abstract:

In order to improve the joint distance-velocity-resolution of the composed linear frequency modulation (CLFM) signal, a rotated linear frequency modulation (RLFM) signal based on fractional Fourier transform is proposed. The design method of RLFM signal is given, and the simulations of the signal about the ambiguity function, -3dB ambiguity graph, distance ambiguity graph and velocity ambiguity graph have been presented. Finally to put RLFM signal and CLFM signal are compared. The differences of them show that the RLFM signal has a better performance on velocity resolution and joint distance-velocity- resolution than the CLFM signal.

Key words: rotated linear frequency modulation signal, fractional Fourier transform, ambiguity function, resolution

CLC Number: