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2016-05-24
Precise Radial Velocity Estimation for Inverse Synthetic Aperture Radar
By
Jianzhi Lin,

    Dr. Jianzhi Lin

    Automatic Target Recognition (ATR) National Defense Science and Technology Key Lab

    National University of Defense Technology

    China

    Homepage

Yue Zhang,

    Dr. Yue Zhang

    Automatic Target Recognition (ATR) National Defense Science and Technology Key Lab

    National University of Defense Technology

    China

    Homepage

Weixing Li,

    Dr. Weixing Li

    National University of Defense Technology

    China

    Homepage

Zeng Ping Chen

    Dr. Zeng Ping Chen

    Science and Technology on Automatic Target Recognition Laboratory

    National University of Defense Technology

    China

    Homepage

Progress In Electromagnetics Research M, Vol. 48, 133-143, 2016
doi:10.2528/PIERM16012806 | Google Scholar

Abstract
This paper describes a convenient technique of precise radial velocity estimation for inverse synthetic aperture radar (ISAR). In order to keep both the range profile and phase history of the echoes coherent, direct sampling with high sampling rate using high performance analog-to-digital converter and matched-filter correlation processing in pulse compression are used for the ISAR system. Due to the coherence property of the echoes, the translational motion compensation parameters for ISAR imaging are just the radial motion parameters of the target. Thus, the coarse velocity estimation is obtained by range alignment and fine velocity estimation is achieved by phase adjustment. The fine velocity estimation is ambiguous and the coarse velocity estimation is used for ambiguity resolution. The advantage of this technique is the high precision with range error values at sub wavelength levels, and it achieves velocity information and translational motion compensation at the same time. Both simulated and experimental validations are presented to verify the effectiveness of the proposed method.
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Citation
Jianzhi Lin, Yue Zhang, Weixing Li, and Zeng Ping Chen, "Precise Radial Velocity Estimation for Inverse Synthetic Aperture Radar," Progress In Electromagnetics Research M, Vol. 48, 133-143, 2016.
doi:10.2528/PIERM16012806
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