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High resolution range profile analysis based on multicarrier phase-coded waveforms of OFDM radar

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5 Author(s)
Huo, Kai ; Institute of Space Electronic Technology, School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, P. R. China ; Deng, Bin ; Liu, Yongxiang ; Jiang, Weidong
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Orthogonal frequency division multiplexing (OFDM) radar with multicarrier phase-coded waveforms has been recently introduced to achieve high range resolution. The conventional method for obtaining the high resolution range profile (HRRP) is based on matched filters. A method of synthesizing HRRP based on the fast Fourier transform (FFT) and decoding is proposed. The mathematical expressions of HRRP are derived by assuming an elementary scenario of point-scattering targets. Based on the characteristic of OFDM multicarrier signals, it mainly analyzes the influence on HRRP exerted by several factors, such as velocity compensation errors, the sampling frequency offset, and so on. The conclusions are significant for the design of the OFDM imaging radar. Finally, the simulation results demonstrate the validity of the conclusions.

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Systems Engineering and Electronics, Journal of  (Volume:22 ,  Issue: 3 )