A High-Resolution, Wide-Swath SAR Imaging System Based on Tandem SAR Satellites

For the spaceborne synthetic aperture radar (SAR), it is difficult to obtain high resolution and wide width at the same time. This paper proposes a novel imaging system based on tandem SAR satellites, where one obtains coarse resolution and wide swath by the scanning mode, and the other obtains the...

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Published inSensors (Basel, Switzerland) Vol. 22; no. 20; p. 7747
Main Authors Sun, Liwei, Li, Chunsheng
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2022
MDPI
Subjects
Algorithms
Antennas
Artificial satellites in remote sensing
Bandwidths
Equipment and supplies
Health aspects
high-resolution wide-swath
Image processing
Imaging systems
minimum-energy criterion
Receivers & amplifiers
Satellites
Sparsity
Synthetic aperture radar
synthetic aperture radar (SAR)
Vegetation mapping
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ISSN1424-8220
1424-8220
DOI10.3390/s22207747

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Summary:For the spaceborne synthetic aperture radar (SAR), it is difficult to obtain high resolution and wide width at the same time. This paper proposes a novel imaging system based on tandem SAR satellites, where one obtains coarse resolution and wide swath by the scanning mode, and the other obtains the undersampled echo from the same swath. The high resolution is achieved by associating the tandem SARs’ echo and using the minimum-energy-based algorithm. Finally, a high-resolution wide-swath SAR system is designed, and its imaging performance is verified by simulated data and real airborne SAR data.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s22207747