Results 131 to 140 of about 356,118 (174)

Microwave Photonic Imaging Radiometer

2018 IEEE 15th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2018
Nano-satellites are gaining in popularity due to their low cost and ease of deployment. Reaching orbit as secondary payload to larger spacecraft enables science grade missions at disruptively low cost. Such miniaturized platforms impose severe constraints on the size, weight, and power (SWaP) of the payload, however, making large antenna apertures ...
Thomas Dillon, . Andrew Wright, Daniel Mackrides, Shouyuan Shi, Janusz Murakowski, Peng Yao, Christopher Schuetz, Dennis Prather   +7 more
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Microwave radiometer model simulation

International Journal of Remote Sensing, 1996
Abstract The relationship between the instrument engineering parameters and the geophysical parameters derived from a multi-frequency microwave radiometer is considered in this paper. A model is described that simulates the performance of this type of instrument and shows how the overall accuracy of the instrument is reflected in the geophysical ...
A. R. L. TATNALL, R. P. DONNELLY, J. E. CHARLTON   +2 more
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An electronically switched microwave radiometer

Journal of Physics D: Applied Physics, 1973
An 11·5 GHz microwave radiometer is described in which periodic noise variations up to 1 kHz were resolved by a sampling process using PIN diode switching. A sensitivity of 0·04 dB (100 K) was recorded in checking the system with the noise power emanating from a current-modulated plasma column.
C J Burkley, C P Downing, M C Sexton
openaire   +1 more source

Simulating Passive Microwave Radiometer Designs Using Simulink [PDF]

Simulation, 2002
The authors have developed a simulation system for a passive microwave radiometer using MATLAB and SIMULINK from The MathWorks, Inc. The system comprises a high-level block diagram simulation for a modern instrument, the Scanning Low Frequency Microwave ...
Heron, Malcom, Goodberlet, Mark A., Burrage, Derek M.   +2 more
exaly   +2 more sources

A multifrequency microwave radiometer of the future

IEEE Transactions on Geoscience and Remote Sensing, 1989
A description is given of a passive microwave remote sensing system designed to meet the observational needs of Earth scientists in the 1990s. This system, called the high-resolution multifrequency microwave radiometer (HMMR), is to be part of a complement of instruments in polar orbit that will form the Earth Observing System (Eos).
D.M. Le Vine, T.T. Wilheit, R.E. Murphy, C.T. Swift   +3 more
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1420 MHz Microwave Radiometer

2006 16th International Crimean Microwave and Telecommunication Technology, 2006
1420 MHz microwave radiometer for remote sensing investigations is presented. Microwave radiometers for this purpose must be stable and sensitive in presence of strong electromagnetic interference.
D. Skulachev, A. Rukavicyn
openaire   +1 more source

Temperature resolution of microwave radiometers

Radiophysics and Quantum Electronics, 1997
We consider the quantum limits of the radiometer sensitivity in power and spectral density measurements of the radio emission. It is shown that taking into account zero-point field fluctuations makes it possible to resolve some paradoxes in the theory of an ideal radiometer.
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Antenna systems for microwave radiometers

Nanotechnology : the development , application - XXI Century
The paper provides an overview of the antenna systems used for microwave radiometers. Due to the development of precision agriculture, the use of radiometers for monitoring soil moisture relief is becoming relevant. Microminiaturization of antenna systems expands the possibility of using radiometers using unmanned aerial vehicles and ground-based ...
A.G. Gudkov, V.F. Los, I.A. Sidorov, I.O. Porokhov   +3 more
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Applications of the Pseudo-Correlation Microwave Radiometer

IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium, 2022
Alan B. Tanner, Xavier Bosch-Lluis, Pekka Kangaslahti   +2 more
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TRMM microwave radiometer algorithms

Proceedings of IGARSS '93 - IEEE International Geoscience and Remote Sensing Symposium, 2002
The TRMM Microwave Imager (TMI) is a modified SSM/I. Significant modifications include: the addition of 2 channels at 10.7 GHz (H and V polarization), a shift of the 22.235 GHz V channel to 21.4 GHz H, and increasing the cone angle from 45/spl deg/ to 49/spl deg/.
openaire   +1 more source