J4 ›› 2015, Vol. 32 ›› Issue (4): 399-406.

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Compensation Method Based on Waveform Evaluation Criterion

DING Jian, ZHU Feng, YANG Lu, ZHANG Hong-bin   

  1. 1. Chuzhou Institute Chuzhou 239000; 2. Air Force Political Department of Beijing Military Area Command, Beijing, 100061; 3. No. 91053 Unit of PLA, Beijing, 100070; 4. No. 93508 Unit of PLA, Beijing, 100079
  • Received:2014-08-29 Revised:2014-11-17 Published:2015-07-28 Online:2015-08-04

Abstract:

Aimed at how to compensate the phase of the incomplete single and double frequency signal effectively, some researches are carried out. The necessary condition for exact phase compensation of signal are deduced and testified theoretically. That is, exact phase compensation can be executed for the incomplete single frequency unconditionally. And it can be executed for the incomplete double frequency on condition of that the multiply of difference from the two frequency of the signal and sampling time interval is an integer. Aimed at the issue of the exact phase compensation can't be carried out, the approximate compensation method based on waveform evaluation criterion is proposed. In simulations, the different compensation effects based on four different criterions are compared. The results prove the deduced theory and proposed method are valid, and show that the compensation effect based on waveform exponent entropy or energy contrast criterion is better than that of other, and the peak of frequency spectrogram is higher than that of other.

Key words: Single and double frequency signal, Compensation principle, Phase, Frequency spectrogram, Waveform evaluation criterion

CLC Number: