Radon-Fourier Transform for Radar Target Detection, I: Generalized Doppler Filter Bank

Xu, Jia; Yu, Jian; Peng, Yingning; Xia, Xiang-Gen

doi:10.1109/taes.2011.5751251

Cited by 490 publications

(353 citation statements)

References 14 publications

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“…34, in order to obtain a balance between Eq. (11) and the estimation precision, 11,29 we suggest ξ ¼ 4F ϒ ∕N for CFCRD.…”

mentioning

confidence: 83%

“…5-10 for corresponding processing algorithms. We assume that all scatterers of the target have been corrected into the right range cell after the range alignment and the phase adjustment, and the coupling between the envelope and the Doppler frequency [29][30][31] will not be discussed in this paper. Assume the number of scatterers in the a'th range cell is P and the azimuth echo takes the form of multicomponent LFM signals E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 1 ; 1 1 6 ; 1 6 4…”

Section: Centroid Frequency Chirp Rate Distribution For Parameters Esmentioning

confidence: 99%

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

Zheng

et al. 2015

J. Appl. Remote Sens

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Abstract. For inverse synthetic aperture radar (ISAR) imaging of targets with nonsevere maneuverability, the Doppler frequencies of scatterers are actually time-varying and azimuth echoes of a range cell have to be modeled as multicomponent linear frequency modulation (LFM) signals after the range alignment and the phase adjustment. In ISAR imaging with the LFM signal model, the chirp rate deteriorates the target image and an effective parameter estimation algorithm is required. By employing a symmetric instantaneous self-correlation function and the modified scaled Fourier transform, an effective parameter estimation algorithm, known as the centroid frequency chirp rate distribution (CFCRD), is proposed and applied to ISAR imaging. Compared to two representative parameter estimation algorithms, the modified Wigner-Ville distribution and the Lv's distribution, the proposed CFCRD can acquire a higher antinoise performance without spectrum aliasing and brute-force searching. Through simulations and analyses of the synthetic radar data and the real radar data, we verify the effectiveness of CFCRD and the corresponding ISAR imaging algorithm.

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“…34, in order to obtain a balance between Eq. (11) and the estimation precision, 11,29 we suggest ξ ¼ 4F ϒ ∕N for CFCRD.…”

mentioning

confidence: 83%

Section: Centroid Frequency Chirp Rate Distribution For Parameters Esmentioning

confidence: 99%

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

Zheng

et al. 2015

J. Appl. Remote Sens

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show abstract

“…The authors are with the Microwave Sensing, Signals and Systems (MS3) group at Delft Technical University (TU Delft), Delft, the Netherlands (e-mail: n.petrov@tudelft.nl; f.lechevalier@tudelft.nl; a.yarovoy@tudelft.nl) [30]) and it can be efficiently compensated via Keystone [2] or Radon [38] transform. Such range-walk compensation allows to transform Doppler ambiguities present in low pulse repetition frequency (PRF) mode into the residual ambiguous sidelobes of the targets.…”

Section: Introductionmentioning

confidence: 99%

Detection of Range Migrating Targets in Compound-Gaussian Clutter

Petrov

Chevalier

Yarovoy

2018

IEEE Trans. Aerosp. Electron. Syst.

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Abstract-This paper deals with the problem of coherent radar detection of fast moving targets in a high range resolution mode. In particular, we are focusing on the spiky clutter modeled as a compound Gaussian process with rapidly varying power along range. Additionally, a fast moving target of interest has a few range cells migration within the coherent processing interval. Two coherent CFAR detectors are proposed taking into account target migration and highly inhomogeneous clutter. Both detectors involve solution of a transcendental equation, carried out numerically in a few iterations. The performance evaluation is addressed by numerical simulations and it shows a significant improvement in detection of fast moving targets in inhomogeneous heavy tailed radar clutter.

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“…As the delay, which minimizes the entropy, is searched with the step determined by the bandwidth of the transmitted signal, the accuracy of the estimated parameters is limited by the delay step. To perform high precision motion parameters estimation, the Radon Fourier transform (RFT) method is proposed for multipulse energy accumulation [5,15,16]. The RFT method is a multidimensional searching method and achieves a good performance of motion parameters estimation because of long coherent integration time.…”

Section: Introductionmentioning

confidence: 99%

A Fast Motion Parameters Estimation Method Based on Cross-Correlation of Adjacent Echoes for Wideband LFM Radars

Zhang¹,

Hong²,

Yang³

et al. 2017

Preprint

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Abstract:In wideband radar systems, the performance of motion parameters estimation can significantly affect the performance of object detection and the quality of inverse synthetic aperture radar (ISAR) imaging. Although the traditional motion parameters estimation methods can reduce the range migration (RM) and Doppler frequency migration (DFM) effects in ISAR imaging, the computational complexity is high. In this paper, we propose a new fast non-searching motion parameters estimation method based on cross-correlation of adjacent echoes (CCAE) for wideband LFM signals. A cross-correlation operation is carried out for two adjacent echo signals, then the motion parameters can be calculated by estimating the frequency of the correlation result. The proposed CCAE method can be applied directly to the stretching system, which is commonly adopted in wideband radar systems. Simulational results demonstrate that the new method can achieve better estimation performances, with much lower computational cost, compared with existing methods. The experimental results on real radar data sets are also evaluated to verify the effectiveness and superiority of the proposed method compared to the state-of-the-art existing methods.

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Radon-Fourier Transform for Radar Target Detection, I: Generalized Doppler Filter Bank

Cited by 490 publications

References 14 publications

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

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

Detection of Range Migrating Targets in Compound-Gaussian Clutter

A Fast Motion Parameters Estimation Method Based on Cross-Correlation of Adjacent Echoes for Wideband LFM Radars

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