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A Slant-range Estimation Method Based on Waveforms of Near-nadir Altimeter
2024 IEEE International Conference on Signal, Information and Data Processing (ICSIDP)Hanwei Sun, Xiaonan Liu
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Sea Surface Kinematics From Near-Nadir Radar Measurements
IEEE Transactions on Geoscience and Remote Sensing, 2018Doppler radars at all incidence angles measure mean velocities and spreads that have complex relations to oceanic motions, with opportunities to measure winds, waves, and currents. Here, we extend previous theoretical models of backscatter and Doppler using a Kirchhoff approximation and the physical optics model.
Frédéric Nouguier +6 more
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Near nadir scattering properties at w-band frequency for the sea surface
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004The sea surface is considered a useful natural calibration target for satelliteborne cloud profiling radar with a narrow antenna beam. However, the normalized radar cross section (NRCS) of the sea surface at W-band frequency is not well known. It is known that the NRCS depends on the wind speed and direction over ocean.
Hiroaki Horie +2 more
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Near nadir Ka-band sar interferometry: SWOT airborne experiment
2011 IEEE International Geoscience and Remote Sensing Symposium, 2011To better prepare data processing system of the Ka-band Radar Interferometer (KaRIn) for the Surface Water and Ocean Topography (SWOT) [1] mission, we opportunistically collected data over several diverse fresh-water targets in the Van Hook Arm areas of North Dakota, USA, using a Ka-band interferometric radar [2] developed at JPL.
Xiaoqing Wu +5 more
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A Waveform Model for Near-Nadir Radar Altimetry Applied to the Cassini Mission to Titan
IEEE Transactions on Geoscience and Remote Sensing, 2009The radar altimeter of the Cassini mission to Titan operates in a transition region between pulse- and beam-limited conditions. Due to the specific observation geometry, low values of mispointing angle have been found to significantly affect altimeter impulse response (IR). This involves a nonconventional formulation of the system response which is the
Giovanni Alberti +3 more
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KaRIn on SWOT: Characteristics of Near-Nadir Ka-Band Interferometric SAR Imagery
IEEE Transactions on Geoscience and Remote Sensing, 2014The principal instrument of the NASA/CNES wide-swath altimetry mission Surface Water and Ocean Topography (SWOT) is the Ka-band Radar Interferometer (KaRIn), a bistatic synthetic aperture radar (SAR) system operating on near-nadir swaths on both sides of the satellite track.
Roger Fjørtoft +10 more
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An Improved Imaging Algorithm for Airborne Near-Nadir Tops SAR With YAW Angle Error
IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020Combined with Terrain Observation by Progressive Scans (TOPS) Synthetic Aperture Radar (SAR), Near-nadir Interferometry SAR (NInSAR) has great potential on the Surface Water and Ocean Topography (SWOT) observation. One practical problem is that the Doppler center of airborne NInSAR varies along range and its bandwidth is greater than pulse repeat ...
Han Li 0006 +4 more
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Near-nadir scan overlap in Earth observations from VIIRS and MODIS
Sensors, Systems, and Next-Generation Satellites XXI, 2017Satellite multi-detector cross-track scanners, such as MODIS (Moderate Resolution Imaging Spectroradiometer) and VIIRS (Visible-Infrared Imaging Radiometer Suite), require synchronization of optical and orbital characteristics to avoid gaps in Earth coverage between scans.
Changyong Cao, Slawomir Blonski
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Automated scene generated background context for near-nadir look angles
SPIE Proceedings, 2016Multi-INT fusion of GEOINT and IMINT can enable performance optimization of target detection and target tracking problem domains 1 , amongst others. Contextual information, which defines the relationship of foreground to background scene content, is a source of GEOINT for which various online repositories exist today including but not limited to the ...
Jonathan D. Tucker, S. Robert Stanfill
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Corrections to “Spire Near-Nadir GNSS-R for Sea Ice Detection: First Results”
IEEE Geoscience and Remote Sensing Lettersexaly +2 more sources