Results 121 to 130 of about 11,790 (229)

Effects of switch leakages upon Nimbus-7 SMMR calibration [PDF]

open access: yes
A calibration model for the Nimbus 7 Scanning Multichannel Microwave Radiometer (SMMR) is studied. This model not only removes major drawbacks of the current calibration model but also helps in the understanding of the performance degradation of the ...
Han, Daesoo, Kim, Seung T.
core   +2 more sources

Microwave emissions from snow [PDF]

open access: yes
The radiation emitted from dry and wet snowpack in the microwave region (1 to 100 GHz) is discussed and related to ground observations. Results from theoretical model calculations match the brightness temperatures obtained by truck mounted, airborne and ...
Chang, A. T. C.
core   +1 more source

1/f-Noise Estimation From Microwave Imager Data With Periodic Gaps

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
We describe a method to estimate coefficients ${{{\bm{h}}}_{\bm{n}}}$ of a power spectral density of the form ${\bm{\Sigma}}{{{\bm{h}}}_{\bm{n}}}/{{{\bm{f}}}^{\bm{n}}}$ (${\bm{f}}\;{\bm{\ }}\text{is}$ the frequency and integer ${\bm{n}} \geq 0$) from ...
Sayak K. Biswas   +4 more
doaj   +1 more source

Microwave remote sensing of soil moisture content over bare and vegetated fields [PDF]

open access: yes
The author has identified the following significant results. Ground truth of soil moisture content, and ambient air and soil temperatures were acquired concurrently with measurements of soil moisture in bare fields and fields covered with grass, corn ...
Mcmurtrey, J. E., III   +2 more
core   +1 more source

Multifrequency remote sensing of soil moisture [PDF]

open access: yes
Multifrequency sensor data collected at Guymon, Oklahoma and Dalhart, Texas using 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
Jones, C. L.   +3 more
core   +1 more source

Microminiaturization of Multichannel Multifrequency Radiographs. [PDF]

open access: yesBiomed Eng (NY), 2022
Gudkov AG   +7 more
europepmc   +1 more source

Spaceborne sensors (1983-2000 AD): A forecast of technology [PDF]

open access: yes
A technical review and forecast of space technology as it applies to spaceborne sensors for future NASA missions is presented. A format for categorization of sensor systems covering the entire electromagnetic spectrum, including particles and fields is ...
Clark, B. P., Kostiuk, T.
core   +1 more source

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