A new Doppler centroid estimation method for high-squint curved-trajectory airborne synthetic aperture radar

Zhichao Zhou; Zegang Ding; Yan Wang; Linghao Li; Kaiwen Zhu; Tao Zeng

doi:10.1080/01431161.2019.1624868

A new Doppler centroid estimation method for high-squint curved-trajectory airborne synthetic aperture radar

Zhichao Zhou, Zegang Ding^*, Yan Wang, Linghao Li, Kaiwen Zhu, Tao Zeng

^*Corresponding author for this work

School of Information and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The average cross-correlation coefficient (ACCC) is a traditional Doppler centroid estimation (DCE) method applied for complex radar data. Though the ACCC method is accurate enough for moving platforms with small acceleration, it cannot be applied for high-squint curved-trajectory synthetic aperture radar because the accompanied larger acceleration will lead to serious Doppler spectrum expansion and result in Doppler aliasing. To solve this problem, a new DCE method is proposed in the paper for the cases with large acceleration. The performance improvement is achieved by employing an additional compensation for the phase and envelope induced by the acceleration. The presented approach is evaluated by the computer simulations.

Original language	English
Pages (from-to)	9003-9025
Number of pages	23
Journal	International Journal of Remote Sensing
Volume	40
Issue number	23
DOIs	https://doi.org/10.1080/01431161.2019.1624868
Publication status	Published - 2 Dec 2019

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10.1080/01431161.2019.1624868

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abstract = "The average cross-correlation coefficient (ACCC) is a traditional Doppler centroid estimation (DCE) method applied for complex radar data. Though the ACCC method is accurate enough for moving platforms with small acceleration, it cannot be applied for high-squint curved-trajectory synthetic aperture radar because the accompanied larger acceleration will lead to serious Doppler spectrum expansion and result in Doppler aliasing. To solve this problem, a new DCE method is proposed in the paper for the cases with large acceleration. The performance improvement is achieved by employing an additional compensation for the phase and envelope induced by the acceleration. The presented approach is evaluated by the computer simulations.",

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AU - Zhou, Zhichao

AU - Ding, Zegang

AU - Wang, Yan

AU - Li, Linghao

AU - Zhu, Kaiwen

AU - Zeng, Tao

PY - 2019/12/2

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N2 - The average cross-correlation coefficient (ACCC) is a traditional Doppler centroid estimation (DCE) method applied for complex radar data. Though the ACCC method is accurate enough for moving platforms with small acceleration, it cannot be applied for high-squint curved-trajectory synthetic aperture radar because the accompanied larger acceleration will lead to serious Doppler spectrum expansion and result in Doppler aliasing. To solve this problem, a new DCE method is proposed in the paper for the cases with large acceleration. The performance improvement is achieved by employing an additional compensation for the phase and envelope induced by the acceleration. The presented approach is evaluated by the computer simulations.

AB - The average cross-correlation coefficient (ACCC) is a traditional Doppler centroid estimation (DCE) method applied for complex radar data. Though the ACCC method is accurate enough for moving platforms with small acceleration, it cannot be applied for high-squint curved-trajectory synthetic aperture radar because the accompanied larger acceleration will lead to serious Doppler spectrum expansion and result in Doppler aliasing. To solve this problem, a new DCE method is proposed in the paper for the cases with large acceleration. The performance improvement is achieved by employing an additional compensation for the phase and envelope induced by the acceleration. The presented approach is evaluated by the computer simulations.

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A new Doppler centroid estimation method for high-squint curved-trajectory airborne synthetic aperture radar

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