Inverse synthetic aperture radar imaging of targets with nonsevere maneuverability based on the centroid frequency chirp rate distribution

Li, Yanyan; Su, Tao; Zheng, Jianhua; He, Xing

doi:10.1117/1.jrs.9.095065

Cited by 5 publications

(1 citation statement)

References 25 publications

(56 reference statements)

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“…Due to the coupling between t m and τ m in the second exponential phase term of Rðt m ; τ m Þ, the inclined line is not parallel to the t m -axis. Due to the first exponential phase term of Rðt m ; τ m Þ, the SCFT 18,26 cannot remove this coupling. It is observed from Eq.…”

Section: Modified Integrated Cubic Phase Functionmentioning

confidence: 99%

Radar high-speed maneuvering target detection based on joint second-order keystone transform and modified integrated cubic phase function

Zhang

et al. 2016

J. Appl. Remote Sens

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Long-time coherent integration is an effective means to improve the radar detection ability of high-speed maneuvering targets with jerk motion. However, the range migration (RM) and Doppler frequency migration (DFM) have a great impact on the integration performance. To overcome these problems, a unique method, called the second-order keystone transform modified integrated cubic phase function (SKT-MICPF), is proposed. In this method, the velocity compensation and SKT are jointly employed to correct the RM. After the RM correction, the azimuth echoes of a range cell where a target is located can be modeled as a cubic phase signal (CPS), whose chirp rate (CR) and quadratic CR are related to the target's radial acceleration and jerk, respectively. Thereafter, an effective parameters' estimation algorithm for CPS, called MICPF, is proposed and applied to compensate the DFM. After that, coherent integration and target detection are accomplished via the fast Fourier transform and constant false alarm rate technique, successively. Compared with the improved axis rotation discrete chirp Fourier transform, the SKT-MICPF achieves close detection performance, but greatly reduces the computational complexity. The results of simulation and real radar data demonstrate the validity of the proposed algorithm. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Modified Integrated Cubic Phase Functionmentioning

confidence: 99%

Radar high-speed maneuvering target detection based on joint second-order keystone transform and modified integrated cubic phase function

Zhang

et al. 2016

J. Appl. Remote Sens

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Smoothed Lv Distribution Based Three-Dimensional Imaging for Spinning Space Debris

Zhuo

Lu³

et al. 2022

IEEE Trans. Geosci. Remote Sensing

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Three-dimensional interferometric inverse synthetic aperture radar imaging of maneuvering target based on the joint cross modified Wigner-Ville distribution

Zheng

et al. 2016

J. Appl. Remote Sens

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Abstract. Inverse synthetic aperture radar (ISAR) can achieve high-resolution two-dimensional images of maneuvering targets. However, due to the indeterminate relative motion between radar and target, ISAR imaging does not provide the three-dimensional (3-D) position information of a target and suffers from great difficulty in target recognition. To tackle this issue, a 3-D interferometric ISAR (InISAR) imaging algorithm based on the joint cross modified Wigner-Ville distribution (MWVD) is presented to form 3-D images of maneuvering targets. First, we form two orthogonal interferometric baselines with three receiving antennas to establish an InISAR imaging system. Second, after the uniform range alignment and phase adjustment, the joint cross MWVD is used for all range cell of each antenna pair to generate the separation of the scatterer as well as preserve the phase that contains position information of the scatterer. At last, the 3-D images of the target can be directly reconstructed from the distribution. Simulation results demonstrate the validity of the proposal.

show abstract

Inverse synthetic aperture radar imaging of targets with nonsevere maneuverability based on the centroid frequency chirp rate distribution

Cited by 5 publications

References 25 publications

Radar high-speed maneuvering target detection based on joint second-order keystone transform and modified integrated cubic phase function

Radar high-speed maneuvering target detection based on joint second-order keystone transform and modified integrated cubic phase function

Smoothed Lv Distribution Based Three-Dimensional Imaging for Spinning Space Debris

Three-dimensional interferometric inverse synthetic aperture radar imaging of maneuvering target based on the joint cross modified Wigner-Ville distribution

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