J4 ›› 2011, Vol. 38 ›› Issue (3): 159-163.doi: 10.3969/j.issn.1001-2400.2011.03.026

• Original Articles • Previous Articles     Next Articles

Range Doppler detection based on the pulsed two-frequency laser

LI Yanhui;WU Zhensen   

  1. (School of Science, Xidian Univ., Xi'an   710071, China)
  • Received:2010-06-12 Online:2011-06-20 Published:2011-07-14
  • Contact: LI Yanhui E-mail:wuzhs@mail.xidian.edu.cn

Abstract:

A method for measuring the range and velocity of the target is proposed based on the pulsed two-frequency laser, and the lidar-radar system concept is introduced. By analyzing the electrical power signal-to nose ratio (SNR), the relation between detection range and pulsewidth is obtained. Then the Doppler detection of the laser pulse bandwidth containing many Doppler gates and the laser pulse bandwidth less than the beat frequency is given.

Key words: lidar-radar, Doppler effect, two-frequency laser, beat frequency

CLC Number: 

  • TN 249