Results 221 to 230 of about 940,927 (266)

P-Band Distributed SAR

2012
This chapter discusses a spaceborne P-band synthetic aperture radar concept based on a distributed architecture and formation flying technologies. This approach can in principle allow overcoming physical constraints that limit the performance of monolithic SARs, leading in the P-band case to huge antennas and hard swath/resolution trade-offs.
FASANO, GIANCARMINE, M. D’Errico, G. Alberti, S. Cesare, G. Sechi   +4 more
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Polarimetric SAR tomography of tropical forests at P-Band

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
This paper addresses the characterization of tropical forests by estimating their heights and the underlying ground topography. A novel hybrid spectral approach is proposed and applied to P-Band Multi-baseline PolInSAR data acquired during the TropiSAR campaign over the test site of Paracou in French Guiana.
Huang, Yue, Ferro-Famil, Laurent, Lardeux, Cédric   +2 more
openaire   +2 more sources

A P-band radar mission to Mars

2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720), 2005
Large regions of Mars are covered by dust that obscures geological evidence for fluvial channels, the extent of volcanic flows, and features associated with near-surface ground ice. We describe a Mars orbiting mission carrying a P-band SAR to map these hidden surface features. Mapping would be carried out in HH and VV polarizations, with the comparison
Campbell, Bruce A., Freeman, A., Velleux, L., Huneycutt, B., Jones, M., Shotwell, R.   +5 more
openaire   +1 more source

P-Band SAR tomography for the characterization of tropical forests

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017
The objective of this paper is to provide a better understanding of tomographic capabilities in characterization of dense forested areas at P-band. The analysis is carried out on airborne data acquired by ONERA over the site in French Guyana, and in Gabon during the ESA campaign TropiSAR 2009 and AfriSAR 2015, respectively.
Ho Tong Minh, Dinh, Villard, Ludovic, Ferro-Famil, Laurent, Tebaldini, S., Le Toan, Thuy   +4 more
openaire   +2 more sources

Airborne SAR for Calibration of P-Band Tower Radar

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
BorealScat is a tower-based radar which measures multipolarization and tomographic backscatter time series data at a forest site in Southern Sweden. In this paper, we describe a methodology for absolute radiometric calibration of BorealScat and apply it to a set of backscatter measurements at P-band (420–450 MHz).
Lars M. H. Ulander, Albert R. Monteith, Per-Olov Frölind, Anders Gustavsson, Anders Haglund, Rolf Ragnarsson, Gunnar Stenström   +6 more
openaire   +1 more source

Airborne circular SAR imaging: Results at P-band

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
The first airborne Circular SAR data acquisition experiment of China was carried out in Sichuan by the National Key Laboratory of Science and Technology on Microwave Imaging (MITL), China. Data was acquired using the MITL's P-band, fully polarimetric SAR system along a circular trajectory with the beam spotted on the same area.
Yun Lin 0002, Wen Hong, Weixian Tan, Yanping Wang, Maosheng Xiang   +4 more
openaire   +1 more source

Polarimetric analysis of SAR-interferograms in L- and P-band

IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), 1998
The authors consider how polarimetric investigation of interferometric SAR data can be used for the qualitative interpretation of interferograms. The polarimetric analysis of scattering matrix data enables the extraction of the relevant scattering mechanisms and the determination of scattering processes.
Ulbricht, A., Papathanassiou, Konstantinos, Cloude, S.   +2 more
openaire   +2 more sources

Effect of the ionosphere on P-band spaceborne SAR images

IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217), 2002
Radar backscatter measurements have proven to be positively correlated with above ground biomass and this correlation increases with the wavelength. Biomass retrieval algorithms have been developed for airborne P-band data collected over both boreal and tropical forests.
Snoeij, P., van der Valk, N., Boom, E., Hoekman, D.H.   +3 more
openaire   +2 more sources

Bistatic P-band SAR signatures of forests and vehicles

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
We present results from the LORAMbis bistatic VHF/UHF-band SAR experiment conducted in September 2010. The SAR flights were performed with the French SETHI system and the Swedish LORA system installed in two aircraft. Frequency band was 222–460 MHz and polarization was HH.
Lars M. H. Ulander, Per-Olov Frölind, Anders Gustavsson, Gunnar Stenstrom   +3 more
openaire   +1 more source

A P-band SAR Interference Filter

[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium, 2005
The synthetic aperture radar (SAR) interference filter is an adaptive filter designed to reduce the effects of interference while minimizing the introduction of undesirable side effects. The author examines the adaptive spectral filter and the improvement in processed SAR imagery using this filter for Jet Propulsion Laboratory Airborne SAR (JPL AIRSAR)
openaire   +1 more source