Results 271 to 280 of about 11,654,989 (317)
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$L$ -Band Ocean Surface Roughness
IEEE Transactions on Geoscience and Remote Sensing, 2020Surface wave spectral properties of centimeter to decameter (cmDm) wavelengths are of great interest to microwave remote sensing of the ocean. They are obviously different from the high-frequency extension of the wind-wave spectrum models developed for ocean science and engineering applications, which focus on the longer waves in the energetic peak ...
Paul A. Hwang, Thomas L. Ainsworth
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Vegetation Effects on Covariations of L-Band Radiometer and C-Band/L-Band Radar Observations
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018NASA's Soil Moisture Active-Passive (SMAP) mission aims at disaggregating L-band radiometer (36 km) with L-band radar (1–3 km) observations to obtain an intermediate resolution soil moisture product (1–9 km). Since SMAP's radar stopped operations in July 2015, a substitution with ESA's Sentinel 1 C-band radar is underway.
Link, M +6 more
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2009 IEEE International Geoscience and Remote Sensing Symposium, 2009
Radio Frequency Interference (RFI) is a major concern for microwave radiometry. In September-October 2008, an airborne campaign for observing L-band RFI was conducted and included approximately fifty hours of flight time. The campaign included test flights in Grand Junction, Colorado, observations over soil moisture ground truth sites in Iowa and ...
Ninoslav Majurec +4 more
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Radio Frequency Interference (RFI) is a major concern for microwave radiometry. In September-October 2008, an airborne campaign for observing L-band RFI was conducted and included approximately fifty hours of flight time. The campaign included test flights in Grand Junction, Colorado, observations over soil moisture ground truth sites in Iowa and ...
Ninoslav Majurec +4 more
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The L-band SAR pre-development
SPIE Proceedings, 2004This paper outlines the development status of an L-band synthetic aperture radar (SAR) antenna demonstrator undertaken by an industrial consortium under contract to the European Space Agency (ESA). Its aim is to verify the technology and the satisfactory performance of the SAR active antenna in advance of the development of the full L-band SAR ...
Pierre Vogel +3 more
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NASA's L-Band Imaging Scatterometer
IGARSS 2004. 2004 IEEE International Geoscience and Remote Sensing Symposium, 2004The L-Band Imaging Scatterometer (LIS) is an airborne radar developed at NASA Goddard Space Flight Center which combines electronic beam steering and digital beamforming allowing the implementation of different scanning techniques. The LIS efforts are part of the RadSTAR initiative intended to develop the technology that will enable a combined radar ...
Rafael F. Rincon +3 more
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Elbaraii, L-Band Radiometer System
IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008L-band (1-2 GHz) microwave radiometry is an important remote sensing technique to monitor soil moisture over land surfaces at the global scale. The ESA L-Band SMOS radiometer mission aims at providing as global maps of soil moisture, with accuracy better than 0.04 m3m-3 every 3 days, with a spatial resolution better than 50 km.
Andreas Wiesmann +5 more
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Hybrid integrated L-band transmitter
IEEE Transactions on Electron Devices, 1968Microstrip circuit techniques are applied to the development of a small, light-weight, ruggedized, L-band 200-mW oscillator. Performance data of the oscillator are given and two applications, a radiosonde and a projectile telemetry transmitter, are described.
A. Presser, E. Belohoubek, H. Johnson
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L-band measurements of boreal soil
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010The successful launch of the European Space Agency's (ESA) Soil Moisture and Ocean Salinity (SMOS) satellite mission on November 2nd 2009 opened a new era of global monitoring with L-band passive microwave instruments. The main objective of the mission is to measure soil moisture and sea surface salinity globally.
Kontu, Anna +6 more
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Combining L-Band Radar and Smos L-Band Vod for High Resolution Estimation of Biomass
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019The vegetation optical depth measured at L-Band (LVOD) by the SMOS satellite provides a high temporal resolution information of the vegetation water content that can be linked to the total above ground biomass (AGB). Nevertheless, its coarse spatial resolution (~ 40 km) can be limiting for a number of applications.
Emma Bousquet +6 more
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Copernicus SAR Missions (C and L-Band)
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021In this paper we provide an overview of the evolution of the Copernicus SAR Space Component: the Sentinel-1 Space Segment, including the Spacecraft development status, the ROSE- L mission development status and the approach for the development of Sentinel-1 Next Generation mission.
Ramón Torres +3 more
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