Results 111 to 120 of about 11,790 (229)

A multi-frequency radiometric measurement of soil moisture content over bare and vegetated fields [PDF]

A USDA Beltsville Agricultural Research Center site was used for an experiment in which soil moisture remote sensing over bare, grass, and alfalfa fields was conducted over a three-month period using 0.6 GHz, 1.4 GHz, and 10.6 GHz Dicke-type microwave ...
Fuchs, J. E., Glazar, W. S., Gould, W. I., Mcmurtrey, J. E., III, Schmugge, T. J., Wang, J. R.   +5 more
core   +1 more source

A theory for the retrieval of virtual temperature from winds, radiances and the equations of fluid dynamics [PDF]

, 1986
A technique to deduce the virtual temperature from the combined use of the equations of fluid dynamics, observed wind and observed radiances is described.
Tzvi, G. C.
core   +1 more source

Microwave Remote Sensing of Ocean Surface Wind Speed and Rain Rates over Tropical Storms [PDF]

The value of using narrowly spaced frequencies within a microwave band to measure wind speeds and rain rates over tropical storms with radiometers is reviewed. The technique focuses on results obtained in the overflights of Hurricane Allen during 5 and 8
Black, P. G., Chien, J. Z., Dehority, D. C., Swift, C. T.   +3 more
core   +1 more source

Microwave remote sensing of soil moisture, volume 1 [PDF]

Multifrequency sensor data from NASA's C-130 aircraft were used to determine which of the all weather microwave sensors demonstrated the highest correlation to surface soil moisture over optimal bare soil conditions, and to develop and test techniques ...
Jones, C. L., Mcfarland, M. J., Rosenthal, W. D., Theis, S. W.   +3 more
core   +1 more source

Intersensor Calibration of Spaceborne Passive Microwave Radiometers and Algorithm Tuning for Long-Term Sea Ice Trend Analysis Based on AMSR-E Observations

Remote Sensing
Sea ice monitoring is key to analyzing the Earth’s climate system. Long-term sea ice extent (SIE) has been continuously monitored using various spaceborne passive microwave radiometers (PMRs) since November 1978. As the lifetime of a satellite is usually
Mieko Seki, Masahiro Hori, Kazuhiro Naoki, Misako Kachi, Keiji Imaoka   +4 more
doaj   +1 more source

Potential spin-offs of the carbon dioxide observational platform system (CO-OPS) for remote sensing opportunities [PDF]

Alternate remote sensing techniques that could utilize the slight losses of energy from the microwave beam which powers the NASA/MSFC Carbon Dioxide Observational Platform System (CO-OPS) to achieve the objectives of the U.S.
Stephens, J. B.
core   +1 more source

Test and evaluation of water vapor radiometers [PDF]

The accuracy of very long baseline interferometry in geodetic and astrometric applications is primarily limited by the propagation delays through the troposphere.
Moran, J.
core   +1 more source

Correction of the SMAP Sea Surface Brightness Temperature and Retrieval of Sea Surface Salinity Incorporating CYGNSS Observables

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The correction of sea surface brightness temperature is crucial for improving the accuracy of sea surface salinity (SSS) retrieval by L-band microwave radiometer.
Zheng Li, Fei Guo, Zhiyu Zhang, Xiaohong Zhang   +3 more
doaj   +1 more source

Multifrequency Microwave Radiometry for Characterizing the Internal Temperature of Biological Tissues. [PDF]

Biosensors (Basel), 2022
Villa E, Aja B, de la Fuente L, Artal E, Arteaga-Marrero N, Ramos G, Ruiz-Alzola J.   +6 more
europepmc   +1 more source

Microwave remote sensing of snow experiment description and preliminary results [PDF]

The active and passive microwave responses to snow were investigated at a site near Steamboat Springs, Colorado during the February and March winter months. The microwave equipment was mounted atop truck-mounted booms.
Hanson, B. C., Stiles, W. H., Ulaby, F. T.   +2 more
core   +1 more source