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Loss of tropical moist broadleaf forest has turned Africa's forests from a carbon sink into a source. [PDF]

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Rodríguez-Veiga P, Carreiras JMB, Quegan S, Heiskanen J, Pellikka P, Adhikari H, Araza A, Herold M, Cartus O, Smallman TL, Williams M, Nwobi CJ, Tsutsumida N, Ryan CM, Brade T, Acil N, Balzter H.   +16 more
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On the TOPS mode spaceborne SAR

Science China Information Sciences, 2010
TOPS (terrain observation by progressive scans) is a recently proposed SAR mode for wide swath acquisition, which aims at achieving the same coverage and resolution as the SCAN mode besides creating scalloping-free images. In this paper, a general SAR imaging model used in TOPS and other SAR modes is introduced, where the antenna sweep rate, Doppler ...
Xia Bai, Jinping Sun, Wen Hong, Shiyi Mao   +3 more
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Spaceborne SAR systems and technologies

2010 IEEE MTT-S International Microwave Symposium, 2010
Design and development of Spaceborne Synthetic Aperture Radar Systems is one of the major activities at EADS Astrium, Friedrichshafen, Germany. Examples of recent and current developments are the TerraSAR-X and the TanDEM-X Satellites, both operating at X-band with multi-polarization capability.
Christoph Heer, Christian Fischer, Christoph Schaefer   +2 more
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On the Mosaic mode spaceborne SAR

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
A new operating mode of synthetic aperture radar (SAR), referred to as Mosaic mode, can simultaneously obtain high azimuth resolution and wide swath. In Mosaic mode, the radar beam scans in the range direction while the strip line is advanced by steering antenna beam in the azimuth direction.
Xiaolei Han, Shiqiang Li, Weidong Yu, Robert Wang 0001   +3 more
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Multi-baseline spaceborne SAR imaging

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
This paper provides an overview of the future development of spaceborne SAR systems with multi-baseline imaging capability like polarimetric SAR interferometry (PolInSAR), tomography (TomoSAR) and holography (HoloSAR). The goal is to fill the multi-dimensional data space with additional information from acquisitions having different spatial or temporal
Alberto Moreira, Octavio Ponce, Matteo Nannini, Matteo Pardini, Pau Prats, Andreas Reigber, Kostas Papathanassiou, Gerhard Krieger   +7 more
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Oceanographic applications of spaceborne bistatic SAR

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
This work presents an analysis of the attainable performance of a bistatic SAR for oceanographic applications, such as the determination of sea state parameters and the reconstruction of the sea wave spectrum. The analysis has been developed with regard to the spaceborne bistatic SAR of the BISSAT mission.
MOCCIA, ANTONIO, RUFINO, GIANCARLO, DE LUCA M.   +2 more
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Determination of phase errors in spaceborne SAR

Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium, 2002
The phase of a radar signal can be disturbed in the active microwave instrument itself, by spurious motion errors of the platform or due to propagation through the atmosphere. These phase errors lead to geometric distortions and blurring of the SAR image.
Seifert, F.M., Moreira, J.R., Keydel, W., Moreira, A. (Vortragender)   +3 more
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Multiple Beams Spaceborne SAR Imaging

IEEE Transactions on Aerospace and Electronic Systems, 2012
High azimuth resolution and wide swath coverage pose contradicting requirements in conventional spaceborne synthetic aperture radar (SAR) systems. In order to overcome these inherent limitations, the technique of displaced phase centers multiple azimuth beams (MAB) has been proposed in recent years.
Guangjie Kou, Zhensong Wang, Ping Yao
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Spaceborne SAR tomography in urban areas

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013
Persistent scatterer interferometry relies on the assumption that only one dominant scatterer is present per range-azimuth resolution cell. If this criterion is not met the point target candidate is discarded during the iterative processing sequence. This one-scatterer assumption contrasts with the fact that in urban scenarios layover is an ubiquitous ...
Othmar Frey, Irena Hajnsek, Urs Wegmüller   +2 more
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Spaceborne SAR imaging in wavenumber domain

1995 International Conference on Acoustics, Speech, and Signal Processing, 2002
An algorithm to process the synthetic aperture radar (SAR) data in wavenumber domain, is discussed. Generated from the seismic migration technique in the area of geophysics, this imaging method has been modified and developed in the area of SAR imaging.
Hui Jiang, Chao-Huan Hou
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