نتایج جستجو برای: تصویربرداری sar

تعداد نتایج: 19796  

2007
Moon-Kyung Kang Hoonyol Lee

This paper presents the results of the ocean surface current velocity estimation using 6 Radarsat-1 SAR images acquired in west coastal area near Incheon. We extracted the surface velocity from SAR images based on the Doppler shift approach in which the azimuth frequency shift is related to the motion of surface target in the radar direction. The Doppler shift was measured by the difference bet...

Journal: :Journal of oleo science 2007
Eiko Oshimura Yuji Yamashita Kazutami Sakamoto

The (13)C- and (1)H- NMR spectra of isopropyl N-dodecanoylsarcosinate (SLIP) were measured in CDCl(3), CD(3)OD and in sodium dodecanoylsarcosinate (Sar) aqueous solution. The existence of both cis and trans isomeric forms are observed for SLIP just as for Sar. The trans/cis ratio of SLIP in a dilute CDCl(3) solution is over 3.2, which is indicating that SLIP-trans conformation is more stable in...

2013
K. F Ji Z Zhao X. W Xing H. X Zou S. L Zhou

Ship detection and classification with space-borne SAR has many potential applications within the maritime surveillance, fishery activity management, monitoring ship traffic, and military security. While ship detection techniques with SAR imagery are well established, ship classification is still an open issue. One of the main reasons may be ascribed to the difficulties on acquiring the require...

Journal: :Physics in medicine and biology 2010
Ilkka Laakso Tero Uusitupa Sami Ilvonen

Finite-difference time-domain (FDTD) simulations of specific-absorption rate (SAR) have several uncertainty factors. For example, significantly varying SAR values may result from the use of different algorithms for determining the SAR from the FDTD electric field. The objective of this paper is to rigorously study the divergence of SAR values due to different SAR calculation algorithms and to e...

2015
Maribel Pino Mélodie Boulay François Jouen Anne-Sophie Rigaud

Socially Assistive Robots (SAR) may help improve care delivery at home for older adults with cognitive impairment and reduce the burden of informal caregivers. Examining the views of these stakeholders on SAR is fundamental in order to conceive acceptable and useful SAR for dementia care. This study investigated SAR acceptance among three groups of older adults living in the community: persons ...

2002
Dan L. Hutt Paris W. Vachon

Synthetic aperture radar (SAR) imagery from satellites provides a range of data products that can reveal certain aspects of the underwater acoustical environment. Space-based SAR imagery is available in all weather, day or night and has wide area coverage with swaths up to 500 km across. This availability and coverage gives SAR satellite data the potential to enhance acoustic environmental asse...

2004
Stian Solbø Inger Solheim

Space-borne SAR sensors are of special interest for mapping flood extent due to the possibility to acquire images in all weather conditions. In this article we review the SAR part of an operational flood mapping service. An operational service requires fully automatic methods that are able to process any available SAR data in near-real time. Mapping flood with SAR requires different approaches ...

2014
M. Dabboor

A Synthetic Aperture Radar (SAR) system with hybrid-polarity architecture constitutes a significant advancement in the field of radar remote sensing. This new architecture system is a Compact Polarimetric (CP) SAR system which transmits a circular polarization and receives two mutually coherent orthogonal linear polarizations. This SAR system reduces some of the design constraints of the spaceb...

2015
S. C. Yang

For the automation of SAR image Block Adjustment, this paper proposed a method of SAR image matching integrating multiinformation. It takes full advantage of SAR image geometric information, feature information, gray-related information and external auxiliary terrain information for SAR image matching. And then Image Tie Points (ITPs) of Block Adjustment can be achieved automatically. The main ...

Journal: :Chemical communications 2014
Felicitas Lips Joshua D Queen James C Fettinger Philip P Power

Reactions of the tetrylenes Ge(SAr(Me6))2 (1) (Ar(Me6) = C6H3-2,6(C6H2-2,4,6-Me3)2), and Sn(SAr(Me6))2 (2) with (Mo(CO)4(NBD) (NBD = bicyclo[2.2.1]hepta-2,5-diene) gave three new, unusual complexes [Mo(THF)(CO)3{Ge(SAr(Me6))2}] (3), [Mo(THF)(CO)3{Ge(SAr(Me6))2}] (4) and [Mo(CO)4{Sn(SAr(Me6))2}] (5) which display no significant Ge/Sn-Mo bonding. Instead the ligands are coordinated to molybdenum ...

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