Results 141 to 150 of about 1,083 (181)

Cloud detection methods for a stand-alone ground based microwave radiometer

2021
<p>The project “Pilotstation” at DWD employs a test bed setup to assess data availability, quality, observation impact and operational sustainability for five different ground based remote sensing instruments. The instruments in question, also referred to as “profilers”, are designed
Moritz Löffler, Christine Knist, Jasmin Vural, Annika Schomburg, Volker Lehmann, Ulrich Görsdorf, Ulrich Löhnert   +6 more
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Assessment of forecast indices over Sriharikota using ground-based microwave radiometer

SPIE Proceedings, 2016
Continuous measurements of vertical profiles of thermodynamic variables are important for severe weather nowcasting & forecasting over a region instead of radiosonde observations which are available once or twice daily. Microwave Radiometer (MWR) provides high quality of thermodynamic (temperature, water vapor, and cloud liquid) soundings up to an ...
Pushpa Saroja R., Rajasekhar M., Papa Rao G., Rajeevan M., Bharathi G.   +4 more
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Calibration of the ground-based microwave radiometer in monitoring soil moisture

2007 IEEE International Geoscience and Remote Sensing Symposium, 2007
The configurations and specifications of the newly- bought Microwave Radiometer in Beijing Normal Uniersity, China, RPG-8CH-DP, is introduced. The calibration method for monitoring soil moisture is described in this paper.
null Zhongjun Zhang, null Lixin Zhang, Thomas Rose   +2 more
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Analysis and improvement of tipping calibration for ground-based microwave radiometers

IEEE Transactions on Geoscience and Remote Sensing, 2000
The tipping-curve calibration method has been an important calibration technique for ground-based microwave radiometers that measure atmospheric emission at low optical depth. The method calibrates a radiometer system using data taken by the radiometer at two or more viewing angles in the atmosphere. In this method, the relationship between atmospheric
null Yong Han, E.R. Westwater
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The analysis of atmospheric absorption model based on ground-based microwave radiometer

2010 International Symposium on Signals, Systems and Electronics, 2010
The paper introduces two widely used atmospheric absorption models: MPM by Liebe in 1989 and Ulaby in 1976. Compare between them based on ground-based microwave radiometer, this paper presents an atmospheric absorption model with improvement including local line absorption, noresonant dry air spectrum, water vapor continuum, suspended water droplet ...
Jieying He, Shengwei Zhang, Yu Zhang, Fenglin Sun   +3 more
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New cloud detection method for a stand-alone ground based microwave radiometer

2022
<p>Microwave radiometers (MWR) are moving into the focus of national and trans-national meteorological agencies which already operate or which intend to deploy MWR in network setups. The centralized processing of MWR data products within ACTRIS and the imminent integration of MWR into the EUMETNET E-Profile network are two prominent ...
Moritz Löffler, Christine Knist, Ulrich Görsdorf, Jasmin Vural, Ulrich Löhnert   +4 more
openaire   +1 more source

Variability and Dynamic Characteristics of Attenuation Derived by Ground-Based Microwave Radiometer

24th European Microwave Conference, 1994, 1994
The dynamical properties of microwave attenuation have been stuied in tenns of fade duration. The attenuation levels due to only atmospheric water vapour, liquid water and oxygen have been estimated by a ground-based radiometer with channels at 20.6, 31.65 and 52.85 GHz at Denver; USA. The measurements period covers about one year.
Ermanno Fionda, Antonio Martellucci, Ed R. Westwater   +2 more
openaire   +1 more source

Ground-based microwave radiometer measurements during the Southern Great Plains '97 experiment

IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174), 1998
An EOS interdisciplinary science hydrology experiment conducted by NASA and USDA called Southern Great Plains '97 (SGP97) took place from June 18 to July 16, 1997 in Oklahoma, with a goal of mapping surface soil moisture with an airborne L-band microwave radiometer on a daily basis for a month over an 11000 km2 area at 800 m resolution.
P.E. O'Neill, A.Y. Hsu, T.J. Jackson, C.T. Swift   +3 more
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A method for calibrating the ground-based triple-channel microwave radiometer

ICMMT'98. 1998 International Conference on Microwave and Millimeter Wave Technology. Proceedings (Cat. No.98EX106), 2002
Based on the high correlation between the brightness temperatures (TBs) measured by the ground-based triple-channel microwave radiometer at 20.6, 31.65, and 90.0 GHz, a new calibration method is proposed with which the calibration coefficients and sky TBs can simultaneously be obtained by solving the systems of nonlinear equations expressing the ...
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Ground-Based Remote Sensing of Soil Moisture Using Lower Frequency Microwave Radiometers

2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), 2019
The soil is the interface between the biology and geology forming the living skin of the earth, and the water in it keeps the earth alive. Timely information on soil moisture is useful to monitor and forecast agricultural droughts, wildfires, flood risk areas, landslides, etc., Soil moisture measurement using L-band radiometry is now widely accepted as
Boopath, Nithyapriya, Ye, Nan, Wu, Xioling, Walker, Jeffrey, Rao, Y.S., Jackson, Thomas, Kerr, Yann, Kim, Edward, Mcgrath, Andrew, Yeo, In-Young   +9 more
openaire   +1 more source