Convolution-backprojection image reconstruction for bistatic synthetic aperture radar

Bauck, Jerald L.; Jenkins, W.K.

doi:10.1109/iscas.1989.100645

Cited by 25 publications

(13 citation statements)

References 3 publications

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“…We also write the amplitude in terms of its Fourier transform (20) and again make the change of variables to introduce the same large parameter . The critical conditions are and .…”

Section: B Filtermentioning

confidence: 99%

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Bistatic Synthetic Aperture Radar Imaging for Arbitrary Flight Trajectories

Yarman

Yazc

Cheney

2008

IEEE Trans. on Image Process.

131

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Abstract-In this paper, we present an analytic, filtered backprojection (FBP) type inversion method for bistatic synthetic aperture radar (BISAR). We consider a BISAR system where a scene of interest is illuminated by electromagnetic waves that are transmitted, at known times, from positions along an arbitrary, but known, flight trajectory and the scattered waves are measured from positions along a different flight trajectory which is also arbitrary, but known. We assume a single-scattering model for the radar data, and we assume that the ground topography is known but not necessarily flat. We use microlocal analysis to develop the FBP-type reconstruction method. We analyze the computational complexity of the numerical implementation of the method and present numerical simulations to demonstrate its performance.

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“…We also write the amplitude in terms of its Fourier transform (20) and again make the change of variables to introduce the same large parameter . The critical conditions are and .…”

Section: B Filtermentioning

confidence: 99%

“…To our knowledge, the acquisition geometry of BISAR studies for the case of poor antenna directivity are limited to isotropic antennas traversing certain flight trajectories (straight [18], [19] or circular [20], [21] flight trajectories) over flat topography.…”

mentioning

confidence: 99%

Bistatic Synthetic Aperture Radar Imaging for Arbitrary Flight Trajectories

Yarman

Yazc

Cheney

2008

IEEE Trans. on Image Process.

131

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“…In our numerical simulations, we considered a square target of size 5.5km and a rectangular target of size 3.3km by 8 For comparison purposes, we also reconstructed images using backprojection (BP) 6,9 only, where we set Q T R = 1. The projection data and reconstructed images using BP and FBP are presented in Figure 5.…”

Section: Numerical Resultsmentioning

confidence: 99%

Bistatic synthetic aperture inversion for arbitrary flight trajectories

2007

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Reconstruction algorithms for monostatic synthetic aperture radar (SAR) with poor antenna directivity traversing straight and arbitrary flight trajectories have been developed by various authors 1-5 , while, to our knowledge, the acquisition geometry of bistatic SAR studies for the case of poor antenna directivity are limited to isotropic antennas traversing certain flight trajectories (straight 6, 7 or circular 8, 9 flight trajectories) over flat topography.In this paper, we present an approximate analytic inversion method for bistatic SAR (Bi-SAR). 10 In particular, we present a new filtered-backprojection (FBP) type Bi-SAR inversion method for arbitrary, but known, flight trajectories over non-flat, but known, topography. These FBP type reconstruction methods have the advantage that they produce images that have the edges of the scene at the correct location, orientation and strength. We demonstrate the performance of the new method via numerical simulations.

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“…Finally, both images are focused by using a forward time-domain back-projector (TDBP) [22,23] adapted to the bistatic geometry.…”

Section: Synthetic Images Simulationsmentioning

confidence: 99%

Non-Cooperative Bistatic SAR Clock Drift Compensation for Tomographic Acquisitions

Azcueta

Tebaldini

2017

Remote Sensing

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In the last years, an important amount of research has been headed towards the measurement of above-ground forest biomass with polarimetric Synthetic Aperture Radar (SAR) tomography techniques. This has motivated the proposal of future bistatic SAR missions, like the recent non-cooperative SAOCOM-CS and PARSIFAL from CONAE and ESA. It is well known that the quality of SAR tomography is directly related to the phase accuracy of the interferometer that, in the case of non-cooperative systems, can be particularly affected by the relative drift between onboard clocks. In this letter, we provide insight on the impact of the clock drift error on bistatic interferometry, as well as propose a correction algorithm to compensate its effect. The accuracy of the compensation is tested on simulated acquisitions over volumetric targets, estimating the final impact on tomographic profiles.

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Convolution-backprojection image reconstruction for bistatic synthetic aperture radar

Cited by 25 publications

References 3 publications

Bistatic Synthetic Aperture Radar Imaging for Arbitrary Flight Trajectories

Bistatic Synthetic Aperture Radar Imaging for Arbitrary Flight Trajectories

Bistatic synthetic aperture inversion for arbitrary flight trajectories

Non-Cooperative Bistatic SAR Clock Drift Compensation for Tomographic Acquisitions

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