Results 171 to 180 of about 623,780 (223)
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Multibeam radar altimetry: spaceborne feasibility
IEEE Transactions on Geoscience and Remote Sensing, 1991An analysis of the inherent height and spatial resolution of an off-nadir radar altimeter is presented. For the general case, mean-square height uncertainty is shown to be proportional to the cross-track beamwidth divided by the along-track beamwidth. Thus, the cross-track beamwidth should be minimized and the along-track beamwidth maximized, subject ...
Lee S. Miller +2 more
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Eddies in the Western Mediterranean Seen by spaceborne radar
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016In the present study we analyze manifestations of submeso- and mesoscale eddies in the Western Mediterranean Sea found in Envisat Advanced Synthetic Aperture Radar (ASAR) imagery of 2010–2011. Location of mesoscale eddies found in the imagery outlined the main stream of the basin.
Svetlana Karimova, Martin Gade
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Snowfall Detection by Spaceborne Radars
2020Algorithms to determine the thermodynamic phase state of precipitation observed from spaceborne radar are provided in this section. After briefly describing the classical methods to determine the thermodynamic phase of precipitation at the surface, some advanced methods to separate solid precipitation regions from liquid precipitation regions in the ...
Atsushi Hamada +2 more
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Simulation of a spaceborne radar altimeter
Proceedings IEEE Southeastcon '98 'Engineering for a New Era', 2002This paper describes a computer simulation developed for spaceborne radar altimeter applications. The simulation uses a behavioral model for an orbiting altimeter. The model developed is based on the GEOSAT Follow-On Radar Altimeter, but is general in nature and can be used as an analysis or design tool for altimeter design development, or testing.
J.R. Dobrzanski, G.W. Gleason
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Microphysical cross validation of spaceborne radar and ground polarimetric radar
IEEE Transactions on Geoscience and Remote Sensing, 2003Ground-based polarimetric radar observations along the beam path of the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR), matched in resolution volume and aligned to PR measurements, are used to estimate the parameters of a gamma raindrop size distribution (RSD) model along the radar beam in the presence of rain.
V. Chandrasekar 0001 +2 more
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Applied Optics, 1971
Laser radar systems are being developed to acquire and track targets in applications such as the rendezvous and docking of two spacecraft. To search effectively for and locate a target using a narrow laser beam, a scanning system is needed. This paper describes a scan technique whereby a narrow laser beam is synchronously scanned with an equally narrow
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Laser radar systems are being developed to acquire and track targets in applications such as the rendezvous and docking of two spacecraft. To search effectively for and locate a target using a narrow laser beam, a scanning system is needed. This paper describes a scan technique whereby a narrow laser beam is synchronously scanned with an equally narrow
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Parallel processing of spaceborne imaging radar data
Proceedings of the 1995 ACM/IEEE conference on Supercomputing (CDROM) - Supercomputing '95, 1995We discuss the results of a collaborative project on parallel processing of Synthetic Aperture Radar (SAR) data, carried out between the NASA/Jet Propulsion Laboratory (JPL), the California Institute of Technology (Caltech) and Intel Scalable Systems Division (SSD).
Miller, Craig +4 more
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International Journal of Imaging Systems and Technology, 1991
AbstractThe Seasat and Shuttle imaging radars flown in the 1970s and 1980s established a strong scientific and technical base for a number of imaging radars that are flying or under development. Recent advances in understanding wave‐surface interactions, utilization of multispectral and polarimetric data, as well as advances in microwave and electronic
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AbstractThe Seasat and Shuttle imaging radars flown in the 1970s and 1980s established a strong scientific and technical base for a number of imaging radars that are flying or under development. Recent advances in understanding wave‐surface interactions, utilization of multispectral and polarimetric data, as well as advances in microwave and electronic
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Airborne and spaceborne radars for rain mapping
29th Aerospace Sciences Meeting, 1991The use of spaceborne rain radars for global and tropical precipitation mapping can provide significant information for atmospheric and climatic studies. Several key design issues for such a spaceborne rain radar are presented. Attention is also given to the design and development of an airborne rain mapping radar that will be used to support the ...
F. LI +4 more
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Perspectives on Worldwide Spaceborne Radar Programs
2007 IEEE Radar Conference, 2007Radar technology and techniques were originally developed for land-based, maritime, and airborne applications. Spaceborne radar systems development began in the 1960s in the USSR for military purposes, and in the 1970s in the United States for civilian scientific purposes. NASA launched the SeaSAT satellite in 1978, carrying a synthetic aperture radar,
Paul A. Rosen, Gina M. Buccolo
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