New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging
Joint Authors
Lin, Yueguan
Fan, Yida
Jiang, Hai
Wang, Wei
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-14
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The high-resolution wide-swath (HRWS) SAR system uses a small antenna for transmitting waveform and multiple antennas both in elevation and azimuth for receiving echoes.
It has the potential to achieve wide spatial coverage and fine azimuth resolution, while it suffers from elevation pattern loss caused by the presence of topographic height and impaired azimuth resolution caused by nonuniform sampling.
A new approach for HRWS SAR imaging based on compressed sensing (CS) is introduced.
The data after range compression of multiple elevation apertures are used to estimate direction of arrival (DOA) of targets via CS, and the adaptive digital beamforming in elevation is achieved accordingly, which avoids the pattern loss of scan-on-receive (SCORE) algorithm when topographic height exists.
The effective phase centers of the system are nonuniformly distributed when displaced phase center antenna (DPCA) technology is adopted, which causes Doppler ambiguities under traditional SAR imaging algorithms.
Azimuth reconstruction based on CS can resolve this problem via precisely modeling the nonuniform sampling.
Validation with simulations and experiment in an anechoic chamber are presented.
American Psychological Association (APA)
Lin, Yueguan& Fan, Yida& Jiang, Hai& Wang, Wei. 2014. New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036007
Modern Language Association (MLA)
Lin, Yueguan…[et al.]. New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1036007
American Medical Association (AMA)
Lin, Yueguan& Fan, Yida& Jiang, Hai& Wang, Wei. New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036007
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036007