Results 191 to 200 of about 21,027 (215)
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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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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 ...
L.S. Miller, G. S. Brown, L. W. Choy
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Airborne and spaceborne cloud radar designs
Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2005Presents some crucial design parameters and a strawman system design for a nadir-looking, 94-GHz spaceborne cloud profiling radar. This sensor is expected to provide cloud measurements at vertical resolution of 500 m and with a minimum detectable cloud reflectivity of slightly better than -30 dBZ.
S.L. Durden +3 more
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Measurement simulations from spaceborne weather radar
Physics and Chemistry of the Earth, Part B: Hydrology, Oceans and Atmosphere, 2000The need to oversee the meteorological phenomena evolution in those areas of the Earth which are not covered by ground-based meteorological radar is now possible with spaceborne weather radar. The Spaceborne Weather Radar Simulator (SWRS) is a software program developed to simulate the reflected power from ground, sea and meteorological targets. It has
PAVONE S +3 more
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Research in the Spaceborne Meteorological Radar Equation
2008 China-Japan Joint Microwave Conference, 2008This paper starts from the general radar meteorological equation and derives a new form which is suitable for spaceborne usage. Preliminary research has been done in the four main factors of the equation, which are phased array antenna gain, the scattering of deformed raindrop, the atmosphere attenuation and low sidelobe level of antenna.
Jianping Huan, Yanan Xie
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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.K. Li +4 more
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Bistatic radar using a spaceborne illuminator
IET International Conference on Radar Systems 2007, 2007A bistatic radar has a physically separated transmitter and receiver. This paper investigates a bistatic radar system which uses a spaceborne synthetic aperture radar (SAR) transmitter on board the European Space Agency's Envisat satellite and a stationary, ground based receiver. The advantages of this variant of the bistatic configuration includes the
Aric Pierre Whitewood +2 more
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Airborne/Spaceborne Radar: Panel Report
1990Mobile radar platforms can provide unique observations of geophysical phenomena for scientific research and for operational applications such as reconnaissance and flight safety. The advantages of an airborne or spaceborne radar are obvious; the radars provide 1) observations where it is often impractical or too costly to place a ground-based radar (e.
David P. Jorgensen, Robert Meneghini
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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 +2 more
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Design and implementation of spaceborne Terahertz cloud radar
2016 46th European Microwave Conference (EuMC), 2016Spaceborne cloud radar is a kind of active remote sensing instrument. It can achieve all-day, all-weather continuous observations of global cloud vertical structure and cloud liquid water, ice water content. Compared to the current millimeter-wave cloud radar, terahertz cloud radar has a higher sensitivity and a shorter wavelength which is closer to ...
Aiyan Guo +5 more
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