Precise azimuth-to-frequency mapping for effective and efficient compensation of motion errors in airborne SAR

In this work we focus on the Precise Topography- and Aperture-dependent algorithm, briefly PTA, proposed in the recent literature to remove the residual errors still affecting airborne SAR data focused with standard two-step Motion Compensation algorithms. More specifically, we first show that the a...

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Bibliographic Details
Main Authors: Perna, S., Berardino, P., Esposito, C., Fornaro, G., Lanari, R., Pauciullo, A., Wimmer, C., Zamparelli, V.
Format: Conference Proceeding
Language:English
Subjects:
Airborne SAR
Algorithm design and analysis
Azimuth
Motion compensation
Remote sensing
SAR Motion Compensation
Surfaces
Synthetic aperture radar
Synthetic Aperture Radar (SAR)
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Summary:In this work we focus on the Precise Topography- and Aperture-dependent algorithm, briefly PTA, proposed in the recent literature to remove the residual errors still affecting airborne SAR data focused with standard two-step Motion Compensation algorithms. More specifically, we first show that the azimuth-to-frequency mapping used by the PTA procedure is not fully appropriate, because it does not account for the presence of the residual motion errors themselves. Then, we show how to calculate the correct azimuth-to-frequency mapping able to fully account for the presence of the residual motion errors. Finally, we show how to modify the original PTA in such a way to properly exploit the correct azimuth-to-frequency mapping previously discussed.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2013.6721315