搜索结果: 136-150 共查到“工学 radar”相关记录173条 . 查询时间(0.156 秒)
All-optical parallelization for high sampling rate photonic ADC in fully digital radar systems
Ultrafast information processing Nonlinear optics four-wave mixing
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2015/6/9
Optical samples of RF signals are all-optically parallelized for further processing in low-speed electrical digitizers. This technique enables high-rate sampling with no additional jitter and limited ...
Radar cross-section (RCS) analysis of high frequency surface wave radar targets
Electromagnetic scattering High frequency surface wave radar HFSWR Surveillance Radar cross-section RCS RCS prediction RCS reduction
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2010/10/12
Realistic high frequency surface wave radar (HFSWR) targets are investigated numerically in terms of electromagnetic wave -- target interactions. Radar cross sections (RCS) of these targets are simula...
Nonlinear scattering at HF: Prospects for exploitation in OTH radar systems
Nonlinear scattering nonlinear transfer function Volterra expansion rusty bolt HF radar OTH radar HFSWR
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2010/10/12
HF skywave `over-the-horizon' radars experience exceptionally high levels of clutter from the earth's surface as a consequence of their `look-down' propagation geometry. While Doppler processing is ef...
A review of high frequency surface wave radar for detection and tracking of ships
High Frequency Surface Wave Radar HFSWR Detection Tracking Ships Maritime Domain Awareness
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2010/10/12
In today's resource-driven economy, maritime nations are claiming economic borders that extend beyond the continental shelf or the 200 nautical mile (nm) Exclusive Economic Zone (EEZ). However, claimi...
Oceanography radar system WERA: features, accuracy, reliability and limitations
Radar WERA Current Waves
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2010/10/12
The WERA system (WavE RAdar) is a shore based remote sensing system to monitor ocean surface currents, waves and wind direction. This long range, high resolution monitoring system based on short radio...
Remote sensing applications of HF skywave radar: The Australian experience
HF radar OTH radar radio oceanography
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2010/10/12
Australia has conducted research into over-the-horizon radar (OTHR) for almost sixty years. Early programs focused exclusively on military capabilities, such as the detection of aircraft, missiles and...
Vector Velocity Estimation In Doppler Radar Networks
Applied sciences Pure sciences Earth sciences Estimation Mesoscale Networks Radar Velocity Wind
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2014/11/7
This document presents an approach using the maximum likelihood formulation to estimate vector velocities in real-time by a network of Doppler radars. Relationships between the estimated vector veloci...
Electromagnetic behavior of radar absorbing materials based on Ca hexaferrite modified with Co-Ti ions and doped with La
Radar absorbing materials Electromagnetic characterization
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2010/10/25
Radar Absorbing Materials (RAM) are compounds that absorb incidental electromagnetic radiation in tuned frequencies and dissipate it as heat. Its preparation involves the adequate processing of polyme...
A Novel Communication and Radar System for Underground Railway Applications
Novel Communication Radar System Underground Railway
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2009/9/29
A system allowing data to be exchanged between two successive trains in a tunnel, while simultaneously measuring the distance between them, would help to optimize train traffic in very long tunnels, w...
Enhanced Radar Imaging in Uncertain Environment: A Descriptive Experiment Design Regularization Approach
Radar Imaging Uncertain Environment Experiment Design Regularization Approach
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2009/9/3
A new robust technique for high-resolution reconstructive imaging is developed as required for enhanced remote sensing (RS) with imaging array radar or/and synthetic aperture radar (SAR) operating in ...
Modeling and Processing of Radar Signals for Earth Observation
Modeling Radar Signals Earth Observation
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2009/9/3
The rapidly growing number of real aperture and synthetic aperture radars (SARs) devoted to Earth observation provides today a very broad coverage across space, time, and the electromagnetic spectrum....
Aspects of Radar Polarimetry
radar polarimetry optical polarimetry scattering
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2009/7/28
This contribution is a tutorial introduction to the phenomenological theory of radar polarimetry for the coherent scatter case emphasizing monostatic backscattering and forward scattering (transmissio...
The 2nd International Asia-Pacific Conference on Synthetic Aperture Radar
第二届 亚洲与太平洋地区合成孔径雷达 国际会议
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2009/4/16
e radar and SAR expert community of the Asia-Pacific region approved that the Second International Asia-Pacific Conference on Synthetic Aperture Radar (APSAR 2009) will be held during October 26-30, 2...
Sea Surface Wave Observation by using CW Doppler Radar and Effect of Radar irradiation Width
Sea Surface Wave CW Doppler Radar Effect of Radar irradiation Width
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2009/4/1
Sea surface waves had been observed remotely by using a continuous wave (CW) X-band microwave Doppler radar at off Hiratsuka of Sagami-bay. A new algorithm was applied to retrieve a sea surface elevat...
Water Surface Wave Observation by using Microwave Doppler Radar in Experimental Basin
microwave Doppler Radar
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2009/3/27
A water surface wave observation method to use Doppler velocity of the microwave backscattering from water surface has been proposed. Water surface waves were observed by using a X-band CW microwave D...