Results 101 to 110 of about 678 (183)

Ocean surface wind and wave monitoring at Typhoon Fung-Wong by HFSWR OSMAR071 [PDF]

open access: yes, 2012
介绍了OSMAr071高频地波雷达系统“凤凰“台风期间海面风、浪遥测结果。文中给出高频地波雷达OS-MAr071风、浪反演算法:利用SbM模型结合多波束采样法反演风向;利用改进的bArrICk模型进行有效波高的反演;利用SMb关系式进行风速反演。将雷达定点观测结果与浮标数据进行对比,表现出很好的一致性,其中有效波高相关系数为0.72,均方根误差为0.48M,风向相关系数为0.97,均方根误差为27.7°,风速的相关系数为0.6,均方根误差为3.5M/S。文中还对影响探测精度的因素进行了分析。This ...
刘斌   +7 more
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EM Modeling and Simulation Strategies in HFSWR-Based IMS System Design

open access: yesEUROCON 2007 - The International Conference on "Computer as a Tool", 2007
Maritime Integrated Surveillance Systems based on Surface Wave High Frequency Radars (SWHFR) necessitates a good understanding of complex electromagnetic (EM) phenomena such as ground wave propagation, radar cross section (RCS) prediction, clutter elimination, noise and interference cancellation, etc. These are all challenging problems, therefore using
openaire   +2 more sources

Business model transformation for the international division of a fortune 100 high technology company [PDF]

open access: yes, 2008
Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2008.Includes bibliographical references (p. 123-127).Raytheon Canada in Waterloo, Ontario offers a very interesting but challenging research case.
Mokhtari Dizaji, Reza, 1968-
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Bistatic high frequency radar ocean surface cross section for an antenna on a floating platform [PDF]

open access: yes, 2017
Land-based high frequency surface wave radar (HFSWR) is an established sensor for ocean remote sensing. Placing an HFSWR on a floating platform has the advantage of mobility.
Ma, Yue
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Ionospheric clutter models for high frequency surface wave radar [PDF]

open access: yes, 2017
High frequency surface wave radar (HFSWR), operating at frequencies between 3 and 30 MHz, has long been employed as an important ocean remote sensing device.
Chen, Shuyan
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A Deep Learning-Based Time-Frequency Scheme for Ship Detection Using HFSWR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Compact High frequency surface wave radar (HFSWR) has been widely used in remote sensing of oceanic dynamics and ship targets due to its convenient deployment and low cost.
Da Huang   +4 more
doaj   +1 more source

Spatial Directional Noise Cancelation and Weak Target Detection Method Based on Beamspace and Multiple Fourth-Order Cumulants for HFSWR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
High-frequency surface wave radar (HFSWR) has been widely applied to early warning and marine remote sensing due to its over-the-horizon propagation characteristics. Noise and interference are the critical factors affecting its performance.
Dezhu Xiao   +3 more
doaj   +1 more source

Maritime radar: a review on techniques for small vessels detection / Suraya Zainuddin … [et al.] [PDF]

open access: yes, 2019
Maritime radar is an essential technology for observation and tracking systems in various marine applications. In comparison with terrestrial radar systems, maritime radar faces the challenge of large clutter signals, contributed by sea waves.
Abd. Rashid, Nur Emileen   +6 more
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