2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)最新文献_第3页

Evaluation of modeled high resolution virtual brightness temperatures compared to space-borne observations for the neckar catchment 颈卡流域高分辨率虚拟亮度温度模拟与星载观测的对比评估

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530510

P. Saavedra, C. Simmer, B. Schalge

{"title":"Evaluation of modeled high resolution virtual brightness temperatures compared to space-borne observations for the neckar catchment","authors":"P. Saavedra, C. Simmer, B. Schalge","doi":"10.1109/MICRORAD.2016.7530510","DOIUrl":"https://doi.org/10.1109/MICRORAD.2016.7530510","url":null,"abstract":"Synthetic space-borne brightness temperatures have been generated by exploiting CMEM radiative transfer simulations at L-band and land-surface-atmosphere coupled models. The community land model CLM coupled with the atmospheric model COSMO have been used in order to create a full representation of subsurface, soil and vegetation of a catchment located in the south-west Germany, as a virtual reality framework (VR). These VR simulations are used as forcing for CMEM to simulate high resolution 1.4GHz brightness temperature (TB) at H&V polarization. Satellite-like synthetic observations are then generated including foot-print, orbital path and incidence angle. The satellite synthetic TBs are compared with real observations to show the degree of agreement on magnitude and dynamic. It has been found that the synthetic TBs have values of 20 to 60 K less compared to the mean distribution of the real satellite observations within the catchment. This biases vary according to the season with summer exhibiting the maximum and winter the minimum discrepancy. The general bias is largely explained by the fact that the catchment's soil moisture is overestimated by 45% when compared with satellite retrievals. A reduction applied to SM of 55% yields a partial reduction on TB bias, yet not enough to match the real satellite data. The remaining discrepancy is attributed to radiative effects introduced by inappropriate vegetation parametrization and inadequate orography assumptions.","PeriodicalId":330696,"journal":{"name":"2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115137413","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: 1

CubeSat scale receivers for measurement of ice in clouds 用于测量云中冰的立方卫星尺度接收器

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530501

P. Kangaslahti, E. Schlecht, J. Jiang, W. Deal, A. Zamora, K. Leong, S. Reising, X. Bosch, M. Ogut

{"title":"CubeSat scale receivers for measurement of ice in clouds","authors":"P. Kangaslahti, E. Schlecht, J. Jiang, W. Deal, A. Zamora, K. Leong, S. Reising, X. Bosch, M. Ogut","doi":"10.1109/MICRORAD.2016.7530501","DOIUrl":"https://doi.org/10.1109/MICRORAD.2016.7530501","url":null,"abstract":"Global measurements of ice in clouds, both the amount and particle size distribution, are critically needed to reduce uncertainties in global climate models. The retrieval of this information is best achieved with a range of receiver channels across the submillimeter wave range. Advancement of low noise Indium Phosphide (InP) MMIC amplifier technology enabled us to develop miniature submillimeter-wave receivers for a CubeSat scale instrument that achieves 6 km spatial resolution. The heritage of InP MMICs includes continuous operation for four years in the PLANCK Low Frequency Instrument and providing world-record sensitivity with high reliability in several airborne instruments. We have developed a set of InP MMICs for receivers at 240, 310, 380 and 670 GHz with significantly lower noise than previously reported. The noise temperature is NT=450 K at 240 GHz, NT=550K at 310 GHz and NT=650 K at 380 GHz. The 670 GHz LNAs provide a NT of 2400 K. These channels are complemented by the previously-developed and airborne-proven 183 and 118 GHz MMIC receivers that were tested to TRL 6.","PeriodicalId":330696,"journal":{"name":"2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116924555","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: 18

The NWP contribution from the microwave sounder (MWS) on MetOp-Second Generation 微波测深仪(MWS)在MetOp-Second代上的NWP贡献

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530517

G. Tennant, D. Hurd, V. Kangas

引用次数: 1

Analysis and design of mm-wave detectors in SiGe SoC radiometers for spaceborne observations of solar flares 星载太阳耀斑观测中SiGe SoC辐射计毫米波探测器的分析与设计

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530502

L. Aluigi, D. Zito

引用次数: 4

Performance analysis of a hardware implemented complex signal kurtosis radio-frequency interference detector 硬件实现的复信号峰度射频干扰检测器的性能分析

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530507

Adam J. Schoenwald, D. Bradley, P. Mohammed, J. Piepmeier, M. Wong

引用次数: 10

On the amount of information content in microwave radiometry for wet delay correction 微波辐射测量中湿延迟校正的信息量研究

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530518

J. Gual, Adriano Camps

引用次数: 0

Geolocation results for the SMAP passive instrument SMAP被动仪器的地理定位结果

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530530

G. De Amici, J. Piepmeier, Jinzheng Peng

引用次数: 2

Antenna spacing and pattern differences: Their impact in MIRAS reconstruction error 天线间距和方向图差异对MIRAS重构误差的影响

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530496

R. Díez-García, M. Martín-Neira

{"title":"Antenna spacing and pattern differences: Their impact in MIRAS reconstruction error","authors":"R. Díez-García, M. Martín-Neira","doi":"10.1109/MICRORAD.2016.7530496","DOIUrl":"https://doi.org/10.1109/MICRORAD.2016.7530496","url":null,"abstract":"After 6 years in orbit, the European Space Agency (ESA) Soil Moisture and Ocean Salinity mission (SMOS) continues to provide high-quality, global maps of soil moisture and ocean surface salinity. Its payload MIRAS (Microwave Imaging Radiometer with Aperture Synthesis) is an L-band interferometric radiometer which achieves unprecedented resolution. It was successfully launched in November 2009 under the European Space Agency Earth Explorers program, and has since been acquiring high resolution images whose accuracy, precision and stability have been steadily improved. The present work analyzes in detail the observed reconstruction error in SMOS brightness temperature images, and its relationship with the antenna pattern differences between receivers. Such reconstruction error is defined as the spatial ripple that remains after an image reconstruction process, assuming perfect knowledge of the instrument and no calibration errors. The error so defined is therefore completely independent of the radiometric noise or the presence of modeling errors, being then solely related with the reconstruction process. Antenna pattern differences, up to 5 % of the nominal peak value, have a noticeable impact in the observed reconstruction error. Moreover, this impact is more significant when the spacing between elements is above the Nyquist alias-free separation, as is the case in SMOS. In this paper the behavior of the reconstruction error is parametrized in terms of antenna differences and element spacing. All simulations have been performed with the best possible model of the instrument in full polarimetric mode. Although the analysis here is done for MIRAS antennas, it is intended to provide a guidance for a future SMOS follow on mission.","PeriodicalId":330696,"journal":{"name":"2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122285037","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: 5

Corruption of the TRMM microwave imager cold sky mirror due to RFI RFI对TRMM微波成像仪冷天镜的破坏

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530508

S. Farrar, L. Jones

引用次数: 2

An assessment of SMOS version 6.20 products through Triple and Quadruple Collocation techniques considering ASCAT, ERA/Interim LAND, ISMNand SMAP soil moisture data 考虑ASCAT、ERA/Interim LAND、ISMNand SMAP土壤水分数据的三重和四重配置技术对SMOS 6.20版本产品的评价

2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) Pub Date : 2016-04-11 DOI: 10.1109/MICRORAD.2016.7530511

F. Fascetti, N. Pierdicca, R. Crapolicchio, L. Pulvirenti, J. Muoz-Sabater

{"title":"An assessment of SMOS version 6.20 products through Triple and Quadruple Collocation techniques considering ASCAT, ERA/Interim LAND, ISMNand SMAP soil moisture data","authors":"F. Fascetti, N. Pierdicca, R. Crapolicchio, L. Pulvirenti, J. Muoz-Sabater","doi":"10.1109/MICRORAD.2016.7530511","DOIUrl":"https://doi.org/10.1109/MICRORAD.2016.7530511","url":null,"abstract":"In this work, two remotely sensed soil moisture data sets, derived by the Advaced SCATterometer (ASCAT) and the Soil Moisture Ocean Salinity (SMOS), have been compared with the soil moisture provided by the ERA/Interim Land data sets and measured by the in situ probes belonging to the International Soil Moisture Network (ISMN). The Triple Collocation (TC) represents a very useful tool for validating remotely sensed products; in this work, since four sources have been considered, a Quadruple Collocation (QC) approach has been also applied in order to jointly estimate the error standard deviation of the four sources making reference to a common scale as for its magnitude. Both Europe and North Africa were considered during a period starting from June, 2010 to May, 2014. Moreover, the preliminary results of a TC analysis between SMOS, ASCAT and SMAP (Soil Moisture Active/Passive) soil moisture products are shown for the same region of interest considering a period between April and December, 2015.","PeriodicalId":330696,"journal":{"name":"2016 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131076369","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: 1