Cost-Effective Ku-Band Airborne SAR with Doppler Centroid Estimation, Autofocusing, and Indication of Moving Targets

Vavriv, D. M.; Vynogradov, V. V.; Volkov, V. A.; Kozhyn, R. V.; Bezvesilniy, Oleksandr O.; Alekseenkov, S.V.; Shevchenko, A. V.; Vasilevskiy, M. P.

doi:10.1109/eurad.2005.1605554

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…After the range compression of the raw data [4]- [5], the range cell migration correction (RCMC) is applied [2]- [4]. The effect of the range cell migration is related with the fact that the distance from the particular target to the moving SAR platform changes with time.…”

Section: A Principles Of Sar Image Formationmentioning

confidence: 99%

“…5. Obviously, the extended Doppler bandwidth is several times larger than the actual width of the Doppler spectrum (5). Processing of the extended Doppler bandwidth in the range-Doppler domain allows to account the effects of the trajectory instabilities influence, in particular, the unstable antenna beam orientation and the consequences of the application of the conventional motion compensation procedure.…”

Section: Processing Of Extended Doppler Bandwidth For Radiometric Cor...mentioning

confidence: 99%

“…7. The illustrated SAR images were obtained by the Ku-band SAR system developed at the Institute of Radio Astronomy [5]. The first SAR image (Fig.…”

Section: Processing Of Extended Doppler Bandwidth For Radiometric Cor...mentioning

confidence: 99%

“…YNTHETIC aperture radar (SAR) is a well-known instrument for high-resolution imaging of the earth surface [1]- [4]. High range resolution is typically achieved by transmitting pulses with a linear frequency modulation [4]- [5]. High azimuth resolution is obtained by coherent processing of the received pulses during the movement of the SAR platform.…”

Section: Introductionmentioning

confidence: 99%

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Modifications of Range-Doppler Algorithm for Compensation of SAR Platform Motion Instabilities

Gorovyi¹,

Bezvesilniy²,

Vavriv³

2014

International Journal of Electronics and Telecommunications

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Two modifications of the range-Doppler algorithm (RDA) have been proposed to solve problems of SAR platform motion instabilities. First, the multi-look processing based on the RDA with an extended Doppler bandwidth has been introduced for correction of radiometric errors. Second, the RDA has been modified to perform SAR image formation on short-time acquisition intervals to use it in a recently-developed local-quadratic map-drift autofocus (LQMDA) method. The performance of the methods is illustrated with experimental data obtained by airborne SAR systems.

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Section: A Principles Of Sar Image Formationmentioning

confidence: 99%

Section: Processing Of Extended Doppler Bandwidth For Radiometric Cor...mentioning

confidence: 99%

“…7. The illustrated SAR images were obtained by the Ku-band SAR system developed at the Institute of Radio Astronomy [5]. The first SAR image (Fig.…”

Section: Processing Of Extended Doppler Bandwidth For Radiometric Cor...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modifications of Range-Doppler Algorithm for Compensation of SAR Platform Motion Instabilities

Gorovyi¹,

Bezvesilniy²,

Vavriv³

2014

International Journal of Electronics and Telecommunications

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“…The Doppler centroid values for each range gate should be estimated accurately from the received radar data by using one of the Doppler centroid estimators [2]- [4]. The orientation angles can also be found from the estimated Doppler centroid values as was shown in [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Retrieving 3D Relief by Using a Single-Antenna, Squint-Mode Airborne SAR

Bezvesilniy

Dukhopelnykova

Vynogradov

et al. 2006

2006 European Radar Conference

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In the paper, a novel method is proposed for retrieving 3D relief of ground surface by using a single-antenna, squint-mode airborne SAR. The main idea of the method is based on the fact that the spatial 3D location of a target can be found as the intersection of the range sphere, the Doppler cone, and the elevation plane of the antenna pattern. An accurate estimation of Doppler centroid values at each range gate is required for relief retrieving. Flight tests have proved that the proposed method is adequate and reasonable.

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