Literatura académica sobre el tema "Microwave observations"

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Artículos de revistas sobre el tema "Microwave observations"

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Sze, H., J. Benford, and W. Woo. "High-power microwave emission from a virtual cathode oscillator." Laser and Particle Beams 5, no. 4 (1987): 675–81. http://dx.doi.org/10.1017/s0263034600003189.

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Pinched electron beams emit high power microwaves by formation of a virtual cathode. Radiation occurs simultaneously with pinching or slightly thereafter. Observations of strong electrostatic fields and the partitioning of current into reflexing and transmitting populations at the same time that microwaves are emitted indicate virtual cathode formation. Microwaves originate mainly from the virtual cathode side of the anode. A two-dimensional model for the electron flow in the presence of a virtual cathode is presented. The model allows for electron reflexing and velocity distribution spread. S
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Prigent, Catherine, Lise Kilic, Filipe Aires, Victor Pellet, and Carlos Jimenez. "Ice Concentration Retrieval from the Analysis of Microwaves: Evaluation of a New Methodology Optimized for the Copernicus Imaging Microwave Radiometer." Remote Sensing 12, no. 10 (2020): 1594. http://dx.doi.org/10.3390/rs12101594.

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A new methodology has been described in Kilic et al. (Ice Concentration Retrieval from the Analysis of Microwaves: A New Methodology Designed for the Copernicus Imaging Microwave Radiometer, Remote Sensing 2020, 12, 1060, Part 1 of this study) to estimate Sea Ice Concentration (SIC) from satellite passive microwave observations between 6 and 36 GHz. The Ice Concentration Retrieval from the Analysis of Microwaves (IceCREAM) algorithm is based on an optimal estimation, with a simple radiative transfer model derived from satellite observations at 0% and 100% SIC. Observations at low and high freq
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Bongiovanni, Tara, Pang-Wei Liu, Karthik Nagarajan, et al. "Field Observations during the Eleventh Microwave Water and Energy Balance Experiment (MicroWEX-11): from April 25, 2012, through December 6, 2012." EDIS 2015, no. 6 (2015): 96. http://dx.doi.org/10.32473/edis-ae514-2015.

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This new report from UF/IFAS researchers provides another set of observation data that can be used to develop better models for accurate prediction of weather and near-term climate. It describes the observations conducted during the MicroWEX-11, a season-long experiment incorporating active and passive microwave observations for bare soil, elephant grass, and sweet corn using a variety of sensors to understand land–atmosphere interactions and their effect on observed microwave signatures. These observations match that of satellite-based passive microwave radiometers and NASA’s recently launche
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Luo, Xianhan. "Effects of RFI on Solar Microwave Bursts Observed with Hightime Resolution." International Astronomical Union Colloquium 112 (1991): 222–27. http://dx.doi.org/10.1017/s0252921100004048.

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ABSTRACTSolar microwave burst observations with high time resolution (~ 1 ms) are important but difficult to make. It is shown by the experiments of radiometer at wavelength 21 cm on 1 ms time scale that some ultrafast time structures in microwaves, which includes spike impulses, switch-on and switch-off structures, etc., may not be from solar emission but from RFI (radio-frequency interference) or from radiometer itself. Because of the uncertainty at 21 cm and other several wavelengths, we suggest that joint observations of the solar microwave bursts on 1 ms time scale should be carried out o
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Yang, Hu, and Martin Burgdorf. "A Study of Lunar Microwave Radiation Based on Satellite Observations." Remote Sensing 12, no. 7 (2020): 1129. http://dx.doi.org/10.3390/rs12071129.

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In recent years, the study of microwave radiation from the Moon’s surface has been of interest to the astronomy and remote sensing communities. Due to the stable geophysical properties of the Moon’s surface, microwave lunar radiation is highly predictable and can be accurately modeled, given sufficient observations from reliable instruments. Specifically, for microwave remote sensing study, if International System of Unit (SI) traceable observations of the Moon are available, the Moon can thus be used as an SI traceable calibration reference for microwave instruments to evaluate their calibrat
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Barrett, Damian J., and Luigi J. Renzullo. "On the Efficacy of Combining Thermal and Microwave Satellite Data as Observational Constraints for Root-Zone Soil Moisture Estimation." Journal of Hydrometeorology 10, no. 5 (2009): 1109–27. http://dx.doi.org/10.1175/2009jhm1043.1.

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Abstract Data assimilation applications require the development of appropriate mathematical operators to relate model states to satellite observations. Two such “observation” operators were developed and used to examine the conditions under which satellite microwave and thermal observations provide effective constraints on estimated soil moisture. The first operator uses a two-layer surface energy balance (SEB) model to relate root-zone moisture with top-of-canopy temperature. The second couples SEB and microwave radiative transfer models to yield top-of-atmosphere brightness temperature from
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Wilkinson, D. "The microwave background anisotropies: Observations." Proceedings of the National Academy of Sciences 95, no. 1 (1998): 29–34. http://dx.doi.org/10.1073/pnas.95.1.29.

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Battistelli, E. S., E. Carretti, P. de Bernardis, and S. Masi. "Large Radio Telescopes for Anomalous Microwave Emission Observations." Advances in Astronomy 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/607384.

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We discuss in this paper the problem of the Anomalous Microwave Emission (AME) in the light of ongoing or future observations to be performed with the largest fully steerable radio telescope in the world. High angular resolution observations of the AME will enable astronomers to drastically improve the knowledge of the AME mechanisms as well as the interplay between the different constituents of the interstellar medium in our galaxy. Extragalactic observations of the AME have started as well, and high resolution is even more important in this kind of observations. When cross-correlating with I
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Yang, Hu, and Martin Burgdorf. "A Calibrated Lunar Microwave Radiative Transfer Model Based on Satellite Observations." Remote Sensing 14, no. 21 (2022): 5501. http://dx.doi.org/10.3390/rs14215501.

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As a potential external calibration reference for spaceborne microwave sounding instruments, accurate and reliable information of lunar disk-averaged radiance at millimeter band are important and fundamental. Based on study for 2-D lunar scans of the Advanced Technology Microwave Sounder (ATMS) on board the NOAA-20 satellite, the lunar radiance spectrum from 23 to 183 GHz at full moon phase has been reported in our previous work. In this study, the performance of a lunar microwave radiative transfer model (RTM) developed by Keihm was investigated (cited as Keihm model in this paper) . By takin
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Cucurull, L., R. A. Anthes, and L. L. Tsao. "Radio Occultation Observations as Anchor Observations in Numerical Weather Prediction Models and Associated Reduction of Bias Corrections in Microwave and Infrared Satellite Observations." Journal of Atmospheric and Oceanic Technology 31, no. 1 (2014): 20–32. http://dx.doi.org/10.1175/jtech-d-13-00059.1.

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Abstract Satellite radiance measurements are used daily at numerical weather prediction (NWP) centers around the world, providing a significant positive impact on weather forecast skill. Owing to the existence of systematic errors, either in the observations, instruments, and/or forward models, which can be larger than the signal, the use of infrared or microwave radiances in data assimilation systems requires significant bias corrections. As most bias-correction schemes do not correct for biases that exist in the model forecasts, the model needs to be grounded by an unbiased observing system.
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Tesis sobre el tema "Microwave observations"

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Church, Sarah Elizabeth. "Systematic effects in microwave background observations." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359766.

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Peel, Michael. "Simulations and observations of the microwave universe." Thesis, University of Manchester, 2009. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:86392.

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Simulations and observations of the microwave sky are of great importance for under- standing the Universe that we reside in. Specifically, knowledge of the Cosmic Microwave Background (CMB) and its foregrounds – including the Sunyaev-Zel’dovich (SZ) effect from clusters of galaxies and radio point sources – tell us about the Universe on its very largest scales, and also what the Universe is made of. We describe the creation of software to carry out large numbers of virtual sky simulations. The simulations include the CMB, SZ effect and point sources, and are designed to examine the effects of
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Rocha, Graca Maria Moreira De Sousa Teixeira. "Comparison of microwave background predictions and observations." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627175.

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Piles, Guillem Maria. "Multiscale soil moisture retrievals from microwave remote sensing observations." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/77910.

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La humedad del suelo es la variable que regula los intercambios de agua, energía, y carbono entre la tierra y la atmósfera. Mediciones precisas de humedad son necesarias para una gestión sostenible de los recursos hídricos, para mejorar las predicciones meteorológicas y climáticas, y para la detección y monitorización de sequías e inundaciones. Esta tesis se centra en la medición de la humedad superficial de la Tierra desde el espacio, a escalas global y regional. Estudios teóricos y experimentales han demostrado que la teledetección pasiva de microondas en banda L es optima para la medici
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Maisinger, Klaus Stefan. "Methods for analysing observations of the cosmic microwave background." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620637.

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FORASTIERI, Francesco. "Probing the neutrino sector through Cosmic Microwave Background observations." Doctoral thesis, Università degli studi di Ferrara, 2018. http://hdl.handle.net/11392/2488088.

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Le interazioni tra neutrini oltre il modello standard della fisica delle particelle sono un campo aperto sia dal punto di vista teorico che sperimentale. In questa tesi presentiamo come le proprietà non standard dei neutrini possano essere vincolate usando le osservazioni cosmologiche e in particolare i dati della radiazione di fondo cosmica, come i dati di Planck. Considereremo la possibilità che i neutrini posseggano interazioni segrete scalari o pseudoscalari mediate da un bosone Nambu-Goldstone di una simmetria globale spontaneamente rotta U (1) ancora sconosciuta, come ad esempio i modell
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North, Christopher. "Observations of the Cosmic Microwave Background Polarization with C&over." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526094.

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Rajguru, Nutan. "Observations of the cosmic microwave background with the Very Small Array." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613836.

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Taylor, Angela Clare. "Observations of the cosmic microwave background using the very small array." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620631.

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Rodríguez, Gonzálvez Carmen. "Analysis of cosmic microwave background observations with the Arcminute Microkelvin Imager." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609911.

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Libros sobre el tema "Microwave observations"

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L, Parkinson Claire, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Arctic sea ice, 1973-1976: Satellite passive-microwave observations. Scientific and Technical Information Branch, National Aeronautics and Space Administration, 1987.

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L, Parkinson Claire, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Arctic sea ice, 1973-1976: Satellite passive-microwave observations. Scientific and Technical Information Branch, National Aeronautics and Space Administration, 1987.

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Parkinson, Claire L. Arctic sea ice, 1973-1976: Satellite passive-microwave observations. Scientific and Technical Information Branch, National Aeronautics and Space Administration, 1987.

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4

Sànchez, Norma G., and Yuri N. Parijskij, eds. The Early Universe and the Cosmic Microwave Background: Theory and Observations. Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1058-0.

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Sànchez, Norma G. The Early Universe and the Cosmic Microwave Background: Theory and Observations. Springer Netherlands, 2004.

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Per, Gloersen, ed. Arctic and Antarctic sea ice, 1978-1987: Satellite passive-microwave observations and analysis. Scientific and Technical Information Program, National Aeronautics and Space Administration, 1992.

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Abitbol, Maximilian H. Studying the Effects of Galactic and Extragalactic Foregrounds on Cosmic Microwave Background Observations. [publisher not identified], 2018.

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A, Lindemulder Elizabeth, Jovaag Kari, and United States. National Aeronautics and Space Administration., eds. Temperature-dependent daily variability of precipitable water in special sensor microwave/imager observations. National Aeronautics and Space Administration, 1995.

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Per, Gloersen, and Campbell William Joseph 1930-, eds. Arctic and Antarctic sea ice, 1978-1987: Satellite passive-microwave observations and analysis. Scientific and Technical Information Program, National Aeronautics and Space Administration, 1993.

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A, Lindemulder Elizabeth, Jovaag Kari, and United States. National Aeronautics and Space Administration., eds. Temperature-dependent daily variability of precipitable water in special sensor microwave/imager observations. National Aeronautics and Space Administration, 1995.

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Capítulos de libros sobre el tema "Microwave observations"

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Dünner, Rolando. "Cosmic Microwave Background Observations." In The Cosmic Microwave Background. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44769-8_5.

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Raizer, Victor. "Space-Based Microwave Observations." In Advances in Passive Microwave Remote Sensing of Oceans, 2nd ed. CRC Press, 2024. http://dx.doi.org/10.1201/9781003497110-6.

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Rebolo, R. "Cosmic Microwave Background Anisotropy Observations." In Space Sciences Series of ISSI. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-2215-5_2.

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Partridge, R. B. "Concluding Remarks-Observations." In The Cosmic Microwave Background: 25 Years Later. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0655-6_17.

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Lasenby, A. N. "Observations of The Cosmic Microwave Background." In Structure Formation in the Universe. Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0540-1_11.

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Davies, R. D., and A. N. Lasenby. "High Sensitivity Observations of the Microwave Background Radiation." In Observational Cosmology. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3853-3_3.

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Richards, P. L. "Observations of the CMB Spectrum." In The Cosmic Microwave Background: 25 Years Later. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0655-6_9.

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Bevacqua, Martina, Lorenzo Crocco, Loreto Di Donato, Tommaso Isernia, and Roberta Palmeri. "Virtual Experiments and Compressive Sensing for Subsurface Microwave Tomography." In Compressive Sensing of Earth Observations. CRC Press, 2017. http://dx.doi.org/10.1201/9781315154626-8.

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Raizer, Victor. "High-Resolution Imagery and Observations." In Advances in Passive Microwave Remote Sensing of Oceans, 2nd ed. CRC Press, 2024. http://dx.doi.org/10.1201/9781003497110-5.

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Birkinshaw, M. "Observations of the Sunyaev-Zel’dovich Effect." In The Cosmic Microwave Background: 25 Years Later. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0655-6_6.

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Actas de conferencias sobre el tema "Microwave observations"

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Garrigues, Sébastien, Patricia De Rosnay, Ewan Pinnington, et al. "Machine Learning-Based Observation Operators to Assimilate Microwave and SIF Satellite Observations into the ECMWF Integrated Forecast System." In IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2024. http://dx.doi.org/10.1109/igarss53475.2024.10640539.

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Mayvan, Mahdi Zabihi, Leah Hicks, and Dustin Isleifson. "Observations of a Terrestrial Snowfall Event on Grassland Using Polarimetric Microwave Radars." In 2023 URSI International Symposium on Electromagnetic Theory (EMTS). IEEE, 2023. https://doi.org/10.1109/emts57498.2023.10925245.

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Villela, Thyrso, Carlos Alexandre Wuensche, Mario Novello, and Santiago Perez. "Cosmic Microwave Background Physics: Observations." In COSMOLOGY AND GRAVITATION: XIII Brazilian School on Cosmology and Gravitation (XIII BSCG). AIP, 2009. http://dx.doi.org/10.1063/1.3151837.

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Tjemkes, Stephen A., and Graeme L. Stephens. "Microwave observations of precipitable water." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/orsa.1990.wd10.

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Global warming is a contemporary topic of great scientific and social interest. Current models predict a temperature increase as large as 4 K when the atmospheric concentration of carbon dioxide is doubled. The coupling of the hydrological cycle with the initial forcing by carbon dioxide appears to be crucial in these calculations. At present however, it is not evident that the hydrological cycle is correctly modeled. And a comparison of the various components of this cycle with observations is needed. In this presentation observations are presented which could be used to validate the water va
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Lesovoi, Sergey, Mariia Globa, Alexey Gubin, and Alexander Altyntsev. "Microwave imaging spectroscopy of the solar corona." In The Multifaceted Universe: Theory and Observations - 2022. Sissa Medialab, 2022. http://dx.doi.org/10.22323/1.425.0014.

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Weng, Fuzhong. "Assimilation of Microwave Observations in Cloudy Conditions." In Hyperspectral Imaging and Sounding of the Environment. OSA, 2007. http://dx.doi.org/10.1364/hise.2007.htuc3.

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Villela, Thyrso. "Microwave instrumentation for astrophysical observations: Some contributions." In 2011 IEEE/MTT-S International Microwave Symposium - MTT 2011. IEEE, 2011. http://dx.doi.org/10.1109/mwsym.2011.5972899.

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Gopalswamy, N. "Solar activity studies using microwave imaging observations." In 2016 URSI Asia-Pacific Radio Science Conference (URSI AP-RASC). IEEE, 2016. http://dx.doi.org/10.1109/ursiap-rasc.2016.7601382.

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Xiao, Chen, Yi Zhu, Yuhong Ni, Yu Tang, Weizhen Guo, and Fei Sun. "Quality Analysis and Application of Ground-Based Microwave Radiometer Data." In 2019 International Conference on Meteorology Observations (ICMO). IEEE, 2019. http://dx.doi.org/10.1109/icmo49322.2019.9026164.

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Essinger-Hileman, Thomas M., Tobias Marriage, Charles L. Bennett, et al. "Aerogel scattering filters for cosmic microwave background observations." In Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, edited by Jonas Zmuidzinas and Jian-Rong Gao. SPIE, 2018. http://dx.doi.org/10.1117/12.2313387.

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Informes sobre el tema "Microwave observations"

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Merrill, Robert T. Typhoon Monitoring Using Passive Microwave Observations. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada292567.

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Wentz, Frank. Atmospheric Absorption Model for Dry Air and Water Vapor at Microwave Frequencies below 100 GHz Derived from Spaceborne Radiometer Observations. Remote Sensing Systems, 2015. http://dx.doi.org/10.56236/rss-ba.

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Field, Clive. Observation of the Askaryan Effect: Coherent Microwave Cherenkov Emission From Charge Asymmetry in High-Energy Particle Cascades. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/784853.

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