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Use of Passive Microwaves Over the Amazon Forest
[Proceedings] IGARSS '92 International Geoscience and Remote Sensing Symposium, 2005In this study, an attempt is made to derive the evolution of the water status of the Amazon forest canopy over a short period, from satellite microwave radiometry. The Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) temperature corrected tapes data are analysed for the 6.6, 10.7, 18 and 37 GHz frequencies, at daytime and nighttime, for the ...
Calvet, J.C. +4 more
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2009
Although the theme of this book is radar remote sensing, imaging with passive microwave is a complementary technology that warrants an introduction to identify its role alongside radar. This chapter lays the framework for passive microwave imaging, drawing in part from the scattering treatment developed for imaging radar in Chapt ...
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Although the theme of this book is radar remote sensing, imaging with passive microwave is a complementary technology that warrants an introduction to identify its role alongside radar. This chapter lays the framework for passive microwave imaging, drawing in part from the scattering treatment developed for imaging radar in Chapt ...
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Passive Microwave Sensing of the Earth
MTT-S International Microwave Symposium Digest, 2005Passive microwave radiometers have found varied geophysical applications, particularly the remote sensing from satellites of atmospheric temperature and humidity profiles, clouds, soil moisture, snow and ice type and coverage, and other parameters.
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Multitemporal passive microwave mapping in MACHYDRO'90
IEEE Transactions on Geoscience and Remote Sensing, 1994MACHYDR0'90 was an experiment conducted in Pennsylvania in 1990 to study the synergistic use of remote sensors in multitemporal hydrologic studies. As part of this mission the pushbroom microwave radiometer was flown and used to produce brightness temperature maps. Verification studies and vegetation algorithms for mixed land cover areas are described.
Thomas J. Jackson +6 more
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Passive microwave remote discriminator for the marine applications
SPIE Proceedings, 2016The specially calculated and prepared antiradar surfaces on special ships is very good for detecting them by the microwave radiometers. It is interesting to evaluate the possibility of using a passive millimeter wave (PMMW) radiometric discriminator for the remote controlling and finding such objects at real distances and also for environmental ...
Alexander Denisov +4 more
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Passive Microwave Observations - An Introduction
1981The papers presented in this session mostly describe early attempts to correlate observed SEASAT-1 and Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) radiances or brightness temperatures with sea surface temperature (SST), near-surface winds, cloud droplets, atmospheric water vapor and rainfall rates.
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TiBaCaCuO-films for passive microwave devices
Physica C: Superconductivity, 1992Abstract Superconducting TlBaCaCuO-films were prepared by a two-step method. The Tl-HTSC films on LaALO3-substrates are single- phase, highly c-axis oriented, and have critical temperatures up to 116 K. The films have surface resistances of 35 mΩ at 77 K and 92 GHz and were tested for microwave devices. Furthermore we propose a new structuring method
M. Manzel +6 more
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Passive Four-Pole Admittances of Microwave Triodes
Bell System Technical Journal, 1949Measurements have been made of the passive, four-pole admittances of parallel-plane triodes over a wide range of cathode-to-grid and grid-to-plate spacings at a frequency of 4060 megacycles. Results are given for a parallel wire grid and a cross-lateral grid.
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Passive Microwave Devices and Their Applications
1993The very low microwave surface resistance of superconducting thin films permits the realization of microwave devices with performance unattainable with conventional technology. Transmission lines, for example, have very low propagation loss, even in the form of subminiature microstrip, and resonators can have very high quality factors.
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Introduction to Passive Microwave Retrieval Methods
2020This chapter introduces the reader to the basic concepts behind the remote sensing of precipitation from passive microwave radiation. Distinctions are drawn between emission-based frameworks that work well over radiometrically cold oceans, scattering methods that work better over land, and the newer optimal estimation methods that incorporate both of ...
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