Dissemin is shutting down on January 1st, 2025

Published in

2011 IEEE International Geoscience and Remote Sensing Symposium

DOI: 10.1109/igarss.2011.6050222

Institute of Electrical and Electronics Engineers, IEEE Transactions on Geoscience and Remote Sensing, 2(50), p. 617-629, 2012

DOI: 10.1109/tgrs.2011.2161672

Links

Tools

Export citation

Search in Google Scholar

Ambiguity Suppression by Azimuth Phase Coding in Multichannel SAR Systems

Journal article published in 2011 by Federica Bordoni, Marwan Younis ORCID, Gerhard Krieger
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Red circle
Published version: archiving forbidden
Data provided by SHERPA/RoMEO

Abstract

The current generation of spaceborne Synthetic Aperture Radar (SAR) systems suffers from a trade-off between the achievable spatial resolution and swath width. This has motivated intensive research both on more flexible SAR systems, using multiple transmit/receive channels, and on techniques for removing the ambiguities. Among these techniques, the Azimuth Phase Coding (APC), recently proposed to suppress range ambiguities in conventional SAR systems, stands out for its negligible implementation complexity and its effectiveness for point and distributed ambiguities. This paper investigates the possibility of applying the APC technique to the new, forthcoming generation of multichannel SAR systems, based on Digital Beamforming on receive. The extension of APC to multichannel SAR systems is mathematically described. Specific merit figures are defined to quantify the APC performance. A numerical analysis is developed to characterize the influence on the APC behaviors of the main SAR system parameters. Finally, an example of APC performance is provided, by considering two multichannel SAR systems based on a planar and a reflector antenna.