Volume 10 Issue 6
Dec.  2021
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Article Navigation >  Journal of Radars  > 2021  >  10(6): 929-943
ZHOU Zibo, ZHANG Chaowei, XIA Saiqiang, et al. Feature extraction of rotor blade targets based on phase compensation in a passive bistatic radar[J]. Journal of Radars, 2021, 10(6): 929–943. doi: 10.12000/JR21132
Citation: ZHOU Zibo, ZHANG Chaowei, XIA Saiqiang, et al. Feature extraction of rotor blade targets based on phase compensation in a passive bistatic radar[J]. Journal of Radars, 2021, 10(6): 929–943. doi: 10.12000/JR21132
shu

Feature Extraction of Rotor Blade Targets Based on Phase Compensation in a Passive Bistatic Radar

DOI: 10.12000/JR21132
  • 1.

    Airforce Early Warning Academy, Wuhan 430019, China

  • 2.

    PLA 31001 Army, Beijing 100095, China

Funds:  The National Ministries Foundation
More Information
  • Corresponding author: ZHOU Zibo, zibo_travel@163.com
  • Received Date: 2021-09-18
  • Rev Recd Date: 2021-10-29
    • Available Online: 2021-11-05
  • Publish Date: 2021-11-19
    Abstract
  • As a stable and widely covered signal resource, a Global Navigation Satellite System (GNSS) plays an important part in micro-Doppler extraction in a near field. This paper aims at the problems associated with rotor blade target recognition and proposes a novel solution based on phase compensation. First, the mathematical mechanism of flicker distribution in a time-frequency field is analyzed, and phase compensation is used to achieve the Doppler focusing, and then the blade number can be estimated. Second, according to the that the minimum delta frequency principle between the center frequency and standard frequency, the rotation velocity of the rotor blade is obtained. Next, blade lengths can be calculated through the flicker bandwidth in the time-frequency domain. Finally, the simulation experiments validate the effectiveness of the proposed method.

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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