Volume 37 Issue 1
Jan.  2017
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Article Navigation >  Chinese Journal of Space Science  > 2017  >  37(1): 50-58
LU Zhuanxia, LIU Wen, LI Xue, LI Jining, GUO Wenling. Study on Ionospheric Multi-mode Propagation Pollution Suppression Based on Time-frequency Analysis[J]. Chinese Journal of Space Science, 2017, 37(1): 50-58. doi: 10.11728/cjss2017.01.050
Citation: LU Zhuanxia, LIU Wen, LI Xue, LI Jining, GUO Wenling. Study on Ionospheric Multi-mode Propagation Pollution Suppression Based on Time-frequency Analysis[J]. Chinese Journal of Space Science, 2017, 37(1): 50-58. doi: 10.11728/cjss2017.01.050
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Study on Ionospheric Multi-mode Propagation Pollution Suppression Based on Time-frequency Analysis

doi: 10.11728/cjss2017.01.050

  • China Research Institute of Radiowave Propagation, Qingdao 266107

  • Received Date: 2015-11-03
  • Rev Recd Date: 2016-06-08
  • Publish Date: 2017-01-15
    Abstract
  • The high resolution linear time-frequency analysis method and the combined time-frequency analysis method are the theoretically analyzed and verified by simulation in this paper. And these two methods are applied to high frequency ionospheric backscattering detection data that have ionospheric multi-mode propagation state. The effect of ionospheric pollution suppression is analyzed. Results show that these two methods have better effect in the case of ionospheric multi-mode propagation state and phase pollution exist at the same time. These two methods can make spectrum more sharpening than other conventional methods. The ship target is clearly revealed in time-frequency domain. Thus it is proved that these two methods have very high application value. For sky-wave over-the-horizon radar detection of low speed targets like ships, these two methods are of great significance.

     

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