Radar tomography using Doppler-based projections

Sego, Daniel J.; Griffiths, Hugh; Wicks, Michael C.

doi:10.1109/radar.2011.5960569

Cited by 11 publications

(7 citation statements)

References 9 publications

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“…The BP algorithm is applied in tomographic image formation [49, 50]. The literature [51, 52] presents the relationship between the FBP algorithm and the Fourier–Hankel inversion method in BP.…”

Section: Methodsmentioning

confidence: 99%

Radar imaging using pseudo‐coherent marine radar technology

Aljohani

Mrebit

Monte³

et al. 2020

IET Radar, Sonar & Navigation

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Section: Methodsmentioning

confidence: 99%

Radar imaging using pseudo‐coherent marine radar technology

Aljohani

Mrebit

Monte³

et al. 2020

IET Radar, Sonar & Navigation

Self Cite

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“…Radar tomographic imaging with ultra-narrowband or single-frequency waveforms relies on spatial diversity as the only system resource for image formation [8][9][10][11]. Spatial diversity may be…”

Section: Introductionmentioning

confidence: 99%

On the Slow-Time k-Space and its Augmentation in Doppler Radar Tomography

Tran

Heading

2020

Sensors

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Doppler Radar Tomography (DRT) relies on spatial diversity from rotational motion of a target rather than spectral diversity from wide bandwidth signals. The slow-time k-space is a novel form of the spatial frequency space generated by the relative rotational motion of a target at a single radar frequency, which can be exploited for high-resolution target imaging by a narrowband radar with Doppler tomographic signal processing. This paper builds on a previously published work and demonstrates, with real experimental data, a unique and interesting characteristic of the slow-time k-space: it can be augmented and significantly enhance imaging resolution by signal processing. High resolution can reveal finer details in the image, providing more information to identify unknown targets detected by the radar.

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“…As a consequence, Doppler tomography has been considered for narrowband radar imaging [5][6][7][8][9][10][11][12], which is also called "Doppler radar tomography" (DRT). The main idea of DRT is to utilize the information given by the Doppler frequencies induced from the relative radar-target rotational motion to construct an image of the target, which can be conveniently formulated in the slow-time k-space [8].…”

Section: Introductionmentioning

confidence: 99%

Compressive Sensing for Tomographic Imaging of a Target with a Narrowband Bistatic Radar

Nguyen

Berry

Tran

2019

Sensors

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This paper introduces a new approach to bistatic radar tomographic imaging based on the concept of compressive sensing and sparse reconstruction. The field of compressive sensing has established a mathematical framework which guarantees sparse solutions for under-determined linear inverse problems. In this paper, we present a new formulation for the bistatic radar tomography problem based on sparse inversion, moving away from the conventional k-space tomography approach. The proposed sparse inversion approach allows high-quality images of the target to be obtained from limited narrowband radar data. In particular, we exploit the use of the parameter-refined orthogonal matching pursuit (PROMP) algorithm to obtain a sparse solution for the sparse-based tomography formulation. A key important feature of the PROMP algorithm is that it is capable of tackling the dictionary mismatch problem arising from off-grid scatterers by perturbing the dictionary atoms and allowing them to go off the grid. Performance evaluation studies involving both simulated and real data are presented to demonstrate the performance advantage of the proposed sparsity-based tomography method over the conventional k-space tomography method.

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Radar tomography using Doppler-based projections

Cited by 11 publications

References 9 publications

Radar imaging using pseudo‐coherent marine radar technology

Radar imaging using pseudo‐coherent marine radar technology

On the Slow-Time k-Space and its Augmentation in Doppler Radar Tomography

Compressive Sensing for Tomographic Imaging of a Target with a Narrowband Bistatic Radar

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