2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)最新文献_第3页

Advances in calibration of the SMOS zero-baseline radiometers SMOS零基线辐射计标定研究进展

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878939

A. Colliander, C. Chae, J. Kainulainen, E. Dinnat, F. Torres, I. Corbella, R. Oliva, M. Martín-Neira

引用次数: 0

Global Precipitation Measurement (GPM) microwave imager (GMI) pre-flight noise diode calibration 全球降水测量(GPM)微波成像仪(GMI)飞行前噪声二极管校准

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878932

D. Draper, D. Newell

引用次数: 0

A roughness correction algorithm for aquarius using MWR 基于MWR的水瓶座粗糙度校正算法

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878905

Y. Hejazin, W. Jones, S. El-Nimri

{"title":"A roughness correction algorithm for aquarius using MWR","authors":"Y. Hejazin, W. Jones, S. El-Nimri","doi":"10.1109/MICRORAD.2014.6878905","DOIUrl":"https://doi.org/10.1109/MICRORAD.2014.6878905","url":null,"abstract":"Aquarius/SAC-D is a collaborative earth science satellite mission, between NASA and the Argentine Space Agency, CONAE. The two microwave radiometers on the satellite are the NASA Aquarius (AQ, L-band 1.4 GHz) and the CONAE MicroWave Radiometer (MWR, Ka-band 36.5 GHz V-& H-pol and K-band 23.8 GHz H-pol). The mission science objective is to provide high-resolution global sea surface salinity (SSS) maps every 7-days, which are derived using the AQ combined L-band radiometer/scatterometer. The application of L-band radiometry to measure SSS is a difficult task, and there are many corrections that must be made correctly to obtain accurate SSS data. One of the major error sources is the effect of ocean roughness that “warms” the ocean brightness temperature (Tb) by 0.28 K. In this paper, an alternative sea surface roughness correction algorithm is presented that uses a new semi-empirical Radiative Transfer Model (RTM) to estimate the ocean emissivity. This RTM has been tuned using 1-years of observed AQ and MWR Tb's and corresponding atmospheric and oceanic environmental conditions from numerical weather and oceanographic models. Results of independent comparisons (not used in the RTM tuning process) will be presented between the AQ scatterometer derived ocean roughness correction and the MWR roughness correction algorithm. Also, SSS retrievals using these two independent approaches will be compared to an oceanographic salinity model, known as Hybrid Coordinate Ocean Model (HYCOM) salinity.","PeriodicalId":309298,"journal":{"name":"2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125715538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Noise sources for internal calibration of millimeter-wave radiometers 毫米波辐射计内部校准用噪声源

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878930

C. Parashare, P. Kangaslahti, Shannon T. Brown, S. Padmanabhan, A. Tanner, O. Montes, D. Dawson, T. Gaier, S. Reising, Victoria D. Hadel, T. Johnson, X. Bosch-Lluis

{"title":"Noise sources for internal calibration of millimeter-wave radiometers","authors":"C. Parashare, P. Kangaslahti, Shannon T. Brown, S. Padmanabhan, A. Tanner, O. Montes, D. Dawson, T. Gaier, S. Reising, Victoria D. Hadel, T. Johnson, X. Bosch-Lluis","doi":"10.1109/MICRORAD.2014.6878930","DOIUrl":"https://doi.org/10.1109/MICRORAD.2014.6878930","url":null,"abstract":"We have developed noise sources at 90 GHz, 130 GHz and 168 GHz each using a custom-designed beam-lead noise diode from M-Pulse Microwave Inc. These noise sources measure a high excess noise ratio (ENR) of 17 dB, 9.6 dB and 6 dB at 90 GHz, 130 GHz and 168 GHz, respectively and are to be used for internal calibration in the high-frequency millimeter-wave nadir-viewing radiometers, which are expected to provide increased spatial resolution of wet-tropospheric path delay correction for coastal regions and inland water. The noise sources meet the ENR, radiometric stability, mass and size requirements, which enables us to achieve internal calibration for the high-frequency millimeter-wave channels. Furthermore, we have developed a novel approach that utilizes a MMIC LNA as a noise source in the 168 GHz frequency band. Both of these noise sources have demonstrated excellent stability of 0.07% per hour. This translates to <; 0.1K per hour TA stability for cold ocean scene.","PeriodicalId":309298,"journal":{"name":"2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130323605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Ice Cloud Imager with polarimetric capabilities 具有偏振功能的冰云成像仪

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878925

J. Goutoule, D. Sanson, P. Crescence, C. Prigent, L. Grandsire, E. Sáenz

{"title":"Ice Cloud Imager with polarimetric capabilities","authors":"J. Goutoule, D. Sanson, P. Crescence, C. Prigent, L. Grandsire, E. Sáenz","doi":"10.1109/MICRORAD.2014.6878925","DOIUrl":"https://doi.org/10.1109/MICRORAD.2014.6878925","url":null,"abstract":"This paper presents and proposes an Advanced Ice Cloud Imager, a low earth orbit radiometer insuring a polarimetric imagery of the Earth atmosphere from millimeter waves up to nearly one THz. It is focused on the characterization of ice clouds, convection and snowfall. It will extend the capabilities of the Ice Cloud Imager (ICI) thanks to enhanced polarimetry by: Measuring both orthogonal polarizations in all `window' channels, measuring the full polarization vector for the lowest window channel, at 157GHz, including a 874 GHz channel to help bridge the gap between the millimetric and the far infrared measurements. The observation is based on a conical scan sub-millimeter wave instrument. The ground resolution is 12Km from 800Km altitude, on a “METOP-like” polar orbit. The full satellite is in the 500Kg/500W range. The channels frequencies range from 157GHz (with polarimetric capabilities) to 874GHz. The paper puts the emphasis on the impact of the polarization measurement capability onto the instrument architecture, in particular the antenna: in a first approach the offset antenna configuration has been explored, with one or two 157 GHz horns. Then a Cassegrain antenna has been preferred in order to meet the stringent cross polarization requirement. Finally, for accommodation and antenna performance reasons, the antenna has been split in a Cassegrain antenna for low frequencies and a separate small offset antenna for the two upper ones. The calibration system, also split in two parts, is depicted and the overall instrument implementation is shown. Finally the paper identifies the remaining technology steps needed to open the way to this highly accurate instrument: Proof of actual low cross-pol horn (design, manufacturing, verification); wide band Stoke parameters acquisition, aiming at a “157GHz radiometer with digital backend”: refinement of full Stoke parameters calibration.","PeriodicalId":309298,"journal":{"name":"2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114978503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Aquarius radiometer status 水瓶座辐射计状态

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878945

D. L. Le Vine, J. Piepmeier, E. Dinnat, P. de Matthaeis, C. Utku, S. Abraham, G. Lagerloef, T. Meissner, F. Wentz

引用次数: 2

Bicontinuous/DMRT model applied to active and passive microwave remote sensing of terrestrial snow 双连续/DMRT模型在陆地积雪主被动微波遥感中的应用

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878918

Wenmo Chang, L. Tsang, J. Lemmetyinen, Xiaolan Xu, S. Yueh

引用次数: 2

A Bayesian approach for a SAC-D/aquarius soil moisture product SAC-D/aquarius土壤湿度产品的贝叶斯方法

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878896

C. Bruscantini, F. Grings, M. Barber, P. Perna, H. Karszenbaum

引用次数: 1

An attempt to classify the types of clouds by a dual frequency microwave radiometer 用双频微波辐射计对云的类型进行分类的尝试

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878915

L. Resteghini, C. Capsoni, L. Luini, R. Nebuloni

引用次数: 5

Aquarius whole range calibration: Celestial Sky, ocean, and land targets 水瓶座全范围校准:天空，海洋和陆地目标

2014 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2014-03-24 DOI: 10.1109/MICRORAD.2014.6878937

E. Dinnat, D. L. Le Vine, R. Bindlish, J. Piepmeier, Shannon T. Brown

引用次数: 7