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High Resolution Two Dimensional Imaging Algorithm Based on Rotating Antenna
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TN957

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    Abstract:

    he vortex electromagnetic wave being generable and the spinning target being imageable, a high resolution two dimensional imaging method based on the rotating antenna is proposed. A radar observation model based on the rotating antenna is constructed firstly, and then the target range information is obtained by using the range direction fast Fourier transform (FFT), and the sinusoidal expression of Doppler effect containing the target azimuth information is derived. Finally, the orthogonal matching pursuit (OMP) algorithm is applied to the sinusoidal signal to remake at an angle of azimuth to the target, effectively improving the azimuth angle resolution in the range of radar beam. The algorithm requires radar to be low in the performance, overcoming the dependence of image quality on pure multi mode vortex electromagnetic wave, and achieving high resolution two dimensional imaging of stationary targets. The simulation results show that the proposed algorithm is valid and robust.

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  • Received:
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  • Online: November 04,2022
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