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›› 2010, Vol. 27 ›› Issue (4): 499-506.DOI: 10.7523/j.issn.2095-6134.2010.4.010

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Dual-tone continuous wave radar based on six-port technology

DING Yao, LIU Fa-Lin, ZHU Zhi-Zhen   

  1. Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China
  • Received:2009-07-28 Revised:2010-02-09 Online:2010-07-15

Abstract:

A novel dual-tone CW radar is proposed. Six-port circuit is used as a mixer to obtain the phase difference and Doppler frequency difference between the received and transmitted signals, and then the range and relative velocity of the target can be calculated. An anti-noise method is also proposed according to the measurement process and noise transfer principle. Simulation results show that this proposed radar has a higher accuracy with a simpler measure procedure.

Key words: six-port technology, dual-tone CW radar, Doppler frequency, reflection coefficient, least square estimation

CLC Number: