نتایج جستجو برای: nrcs اصلی

تعداد نتایج: 110826  

Journal: :Remote Sensing 2021

The effective normalized radar cross section (NRCS) of breaking waves, σwb, is empirically derived based on joint synchronized Ka-band and video records the sea surface from a research tower. σwb key parameter that, along with breaker footprint fraction, Q, defines contribution non-polarized backscattering, NP =σwbQ, to total NRCS. Combined right representation regular Bragg specular backscatte...

2009
Ninoslav Majurec Joel T. Johnson Simone Tanelli

The primary science instrument of the CloudSat Mission is the Cloud Profiling Radar (CPR). The CPR is a W-band (94 GHz) nadir looking radar (e.g. Tanelli, 2008) with the purpose of measuring backscattered power from hydrometeors (clouds and precipitation). Although the CPR contains an internal calibration system, external calibration using geophysical sources with known normalized radar cross-s...

2000
Ian S Robinson Joseph Allison

During the ERS1-2 Tandem Mission in 1995-6, the synthetic aperture radar (SAR) swath on one satellite overlapped the along-track scanning radiometer (ATSR) swath on the other with a 30 min interval, at latitudes greater than 50°. A number of matching pairs of SAR and partially cloud-free ATSR images were found in the ERS archive covering the South Patagonian Shelf, the Drake Passage and the Ant...

Journal: :Indian pediatrics 2014
K Singh N Badgaiyan A Ranjan H O Dixit A Kaushik K P Kushwaha V M Aguayo

OBJECTIVE To assess the effectiveness of facility-based care for children with severe acute malnutrition (SAM) in Nutrition Rehabilitation Centers (NRC). DESIGN Review of data. SETTING 12 NRCs in Uttar Pradesh, India. PARTICIPANTS Children admitted to NRCs (Jan 1, 2010 - Dec 31, 2011). INTERVENTION Detection and treatment of SAM with locally-adapted protocols. OUTCOMES Survival, defau...

2005
J. A. Johannessen V. Kudryavtsev D. Akimov T. Eldevik N. Winther B. Chapron

A new radar imaging model of ocean current features is proposed. The simulated normalized radar cross section (NRCS) takes into account scattering from “regular” surfaces (by means of resonant Bragg scattering and specular reflections) and scattering from breaking waves. The description of background wind waves and their transformation in nonuniform medium is based on solution of the wave actio...

Journal: :Journal of tuberculosis research 2016
Rajeev R Pathak Bal Krishna Mishra Patrick K Moonan Sreenivas A Nair Ajay M V Kumar Mohit P Gandhi Shamim Mannan Smita Ghosh

INTRODUCTION Seven district-level Nutritional Rehabilitation Centres (NRCs) in Bihar, India provide clinical and nutritional care for children with severe acute malnutrition (SAM). AIM To assess whether intensified case finding (ICF) strategies at NRCs can lead to pediatric case detection among SAM children and link them to TB treatment under the Revised National Tuberculosis Control Programm...

2012
Tae-Sung Kim Kyung-Ae Park

Wind speeds have long been estimated from C-band VV-polarized SAR data by using the CMOD algorithms such as CMOD4, CMOD5, and CMOD_IFR2. Some SAR data with HH-polarization without any observations in VV-polarization mode should be converted to VV-polarized value in order to use the previous algorithms based on VV-polarized observation. To satisfy the necessity of polarization ratio (PR) for the...

2015
Xixian Li Zhi Zeng Qingman Li Qiulin Xu Jiahe Xie Huixin Hao Guangjin Luo Wangjun Liao Jianping Bin Xiaobo Huang Yulin Liao

MiR-497 is predicted to target anti-apoptosis gene Bcl2 and autophagy gene microtubule-associated protein 1 light chain 3 B (LC3B), but the functional consequence of miR-497 in response to anoxia/reoxygenation (AR) or ischemia/reperfusion (IR) remains unknown. This study was designed to investigate the influences of miR-497 on myocardial AR or IR injury. We noted that miR-497 was enriched in ca...

2009
Charles-Antoine Guérin Gabriel Soriano Bertrand Chapron

A family of unified models in scattering from rough surfaces is based on local corrections of the tangent plane approximation through higher-order derivatives of the surface. We revisit these methods in a common framework when the correction is limited to the curvature, that is essentially the secondorder derivative. The resulting expression is formally identical to the weighted curvature appro...

Journal: :Remote Sensing 2017
Hui Meng Xiaoqing Wang Jinsong Chong Xiangfei Wei Weiya Kong

The image intensities of low-backscattering areas in synthetic aperture radar (SAR) images are often seriously contaminated by the system noise floor and azimuthal ambiguity signal from adjacent high-backscattering areas. Hence, the image intensity of low-backscattering areas does not correctly reflect the backscattering intensity, which causes confusion in subsequent image processing or interp...

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