Journal of Systems Engineering and Electronics ›› 2009, Vol. 20 ›› Issue (4): 681-686.

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Doppler estimating and compensating method based on phase

Chen Gang1, Zhao Zhengyu1, Nie Xuedong2, Shi Shuzhu1,Yang Guobin1 & Su Fanfan1   

  1. 1. Ionosphere Lab, Wuhan Univ., Wuhan 430079, P. R. China;
    2. Unit 65041 of the PLA, Shenyang 110113, P. R. China
  • Online:2009-08-14 Published:2010-01-03


According to the Doppler sensitive of the phase coded pulse compression signal, a Doppler estimating and compensating method based on phase is put forward to restrain the Doppler sidelobes, raise the signal-to-noise ratio and improve measuring resolution. The compensation method is used to decompose the echo to amplitude and phase, and then compose the new compensated echo by the amplitude and the nonlinear component of the phase. Furthermore the linear component of the phase can be used to estimate the Doppler frequency shift. The computer simulation and the real data processing show that the method has accurately estimated the Doppler frequency shift, successfully restrained the energy leakage on spectrum, greatly increased the echo signal-to-noise ratio and improved the detection performance of the radio system in both time domain and frequency domain.