Results 221 to 230 of about 68,821 (260)
Some of the next articles are maybe not open access.
2011
Abstract : The performance of a ground moving target indicator (GMTI) radar is strongly driven by the length of the radar aperture, as longer apertures enable lower minimum detectable velocity (MDV) and better target geolocation. Multiple-input multiple-output (MIMO) techniques can enable the use of long sparse array geometries while avoiding the ...
S. K. Davis, J. M. Kantor
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Abstract : The performance of a ground moving target indicator (GMTI) radar is strongly driven by the length of the radar aperture, as longer apertures enable lower minimum detectable velocity (MDV) and better target geolocation. Multiple-input multiple-output (MIMO) techniques can enable the use of long sparse array geometries while avoiding the ...
S. K. Davis, J. M. Kantor
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Airborne firefinder radar concept
Proceedings of the 1998 IEEE Radar Conference, RADARCON'98. Challenges in Radar Systems and Solutions (Cat. No.98CH36197), 2002An airborne firefinder radar (AFFR) is suggested for an upgraded version of the forthcoming Global Hawk Unmanned Aerial Vehicle (UAV). The AFFR could detect an artillery shell within 1 second of firing and, within a few seconds, determine its trajectory origin location (position of the gun) to a circular error probable (CEP) of less than 50 meters. The
R.J. Sullivan, J.F. Nicoll, J.M. Ralston
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Experimental airborne radar transmitter
Proceedings of the Institution of Electrical Engineers, 1976The design, manufacture and commissioning of an airborne radar transmitter amplifier is described. The microwave valve employed is a crossed-field amplifier (c.f.a.), cathode modulated by a hard-valve shunt modulator. The peak output power is 15 kW, and pulse lengths up to 5 μs may be used. The e.h.t.
J. Clarke, R.F. Hillman
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Proceedings of the IEEE, 1985
Airborne Early Warning (AEW) Radar meets the operational requirement of detection and tracking of both low- and high-flying aircraft. The important and fundamental radar parameters of RF, PRF, pulse length, and transmitter power are discussed together with a number of factors relating to the antenna.
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Airborne Early Warning (AEW) Radar meets the operational requirement of detection and tracking of both low- and high-flying aircraft. The important and fundamental radar parameters of RF, PRF, pulse length, and transmitter power are discussed together with a number of factors relating to the antenna.
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Advanced radar modes for airborne surveillance radars
2015 16th International Radar Symposium (IRS), 2015The pod integrated variant of the airborne SmartRadar by AIRBUS Defence & Space, mounted under the wing of a Learjet 35 aircraft, is used as a testbed to develop advanced radar modes. The SmartRadar comprises a multi-phase-centre active electronically steered array (AESA) antenna, a flexible, wide-bandwidth radar core, and an on-board processing unit ...
Martin Kirscht +5 more
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2017
Passive radar is one of the most rapidly developing fields in the radar technology in recent years. The ground-based passive radar technology is now entering a stage of maturity. In the past, in a case of active radars, the technology developed for ground-based sensing was adapted for airborne platforms.
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Passive radar is one of the most rapidly developing fields in the radar technology in recent years. The ground-based passive radar technology is now entering a stage of maturity. In the past, in a case of active radars, the technology developed for ground-based sensing was adapted for airborne platforms.
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A Multichannel airborne radar dataset
2017 IEEE Radar Conference (RadarConf), 2017The U.S. Naval Research Laboratory (NRL) recently developed an airborne Multichannel Synthetic Aperture Radar (MSAR) test bed system consisting of 32 along-track phase centers using two transmit horns and 16 receive antennas. NRL has deployed this system to perform extensive and systematic data collections on a variety of small maritime craft under ...
Raghu G. Raj +7 more
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IEEE International Geoscience and Remote Sensing Symposium, 2003
This paper examines two applications of a multi-channel airborne radar system, or an array-based synthetic aperture radar (SAR). The first mode involves a stripmap SAR array whose electronically-steered beam patterns are exploited to achieved the azimuth resolution of its single element while maintaining a relatively high radar power; this system has ...
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This paper examines two applications of a multi-channel airborne radar system, or an array-based synthetic aperture radar (SAR). The first mode involves a stripmap SAR array whose electronically-steered beam patterns are exploited to achieved the azimuth resolution of its single element while maintaining a relatively high radar power; this system has ...
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2012
Airborne fire control radars (FCRs) on fast strike aircraft are the quintessential pulse Doppler radars. They must work in a wide variety of air-to-air and air-to-ground modes, they must be lightweight and compact, yet they have to achieve long detection ranges in the presence of extreme clutter scenes and be capable of tracking a large number of agile
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Airborne fire control radars (FCRs) on fast strike aircraft are the quintessential pulse Doppler radars. They must work in a wide variety of air-to-air and air-to-ground modes, they must be lightweight and compact, yet they have to achieve long detection ranges in the presence of extreme clutter scenes and be capable of tracking a large number of agile
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2012
Airborne early warning (AEW) radars provide long-range surveillance from an airborne platform. Their primary targets of interest are hostile aircraft. Long-range radar surveillance coverage can be limited by the range to the horizon; however, satisfactory range can be re-established by placing the surveillance radars at high altitude. The line of sight
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Airborne early warning (AEW) radars provide long-range surveillance from an airborne platform. Their primary targets of interest are hostile aircraft. Long-range radar surveillance coverage can be limited by the range to the horizon; however, satisfactory range can be re-established by placing the surveillance radars at high altitude. The line of sight
openaire +1 more source