Results 181 to 190 of about 17,770 (216)
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TIME-DOMAIN ULTRA-WIDEBAND MICROWAVE IMAGING RADAR SYSTEM
Journal of Electromagnetic Waves and Applications, 2002This paper describes the time-domain (TD) ultrawideband (UWB) microwave imaging radar system developed at the University of Illinois at Urbana-Champaign recently. The TD-UWB imaging radar system successfully combines the UWB impulse radar system and inverse scattering imaging algorithms for nondestructive evaluation (NDE) and remote sensing purposes in
Chew, WC, Chen, FC
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Classification of Human Posture from Radar Returns Using Ultra-Wideband Radar
2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2018There is a great need for new technology that helps ensure the well-being of senior citizens who have compromised health and are at an elevated risk of injury due to falls. Being able to detect posture and postural changes may be helpful in prediction and prevention of impending falls.
Zachary, Baird +2 more
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Resolution of ultra-wideband radar signals
IEE Proceedings - Radar, Sonar and Navigation, 1999The paper considers the range resolution of ultra-wideband signals. The situation of targets, adjacent in range, of significantly different amplitude, as in the case of propagation in lossy media, is examined. Several examples, each taken from three general classes of waveform, are examined.
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Ultra-wideband low-cost phased-array radars
IEEE Transactions on Microwave Theory and Techniques, 2005Emerging radar applications require phased arrays that can operate over wide bandwidths to support multiband/multifunction operation. In response to that need, this paper presents a cost-effective implementation for extremely wide-band phased-array radars. Two designs are demonstrated, one operating from 3 to 12 GHz and the other operating from 8 to 20
C.T. Rodenbeck +6 more
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A fiber-distributed multistatic ultra-wideband radar
2015 14th International Conference on Optical Communications and Networks (ICOCN), 2015A fiber-distributed multistatic ultra-wideband (UWB) radar is proposed and demonstrated. The proposed radar includes a central office (CO), two transmitters and a receiver which are connected by optical fibers. The UWB pulses generated by the two transmitters are designed to have opposite polarities using the complementary transmission and reflection ...
Jianbin Fu, null Xilun Chen, Shilong Pan
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Ultra-wideband radar-potential and limitations
1991 IEEE MTT-S International Microwave Symposium Digest, 2002Some of the more obvious uses of ultrawideband (UWB) radar are discussed, together with some of the problems (arising from limited source capabilities) in implementing adequate designs. It is pointed out that the primary limitation on such systems is the lack of peak output power.
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Ultra-wideband radar based on COTS components
2019 Signal Processing Symposium (SPSympo), 2019This paper presents some issues of usage of mini vector network analyzer as ground penetrating radar. The main properties of the system and key requirements for ground penetrating radars are briefly discussed. Preliminary results of building floor scanning using the system are described as well.
Maciej Czerwinski, Mateusz Pasternak
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New practical application of ultra-wideband radars
2007 European Radar Conference, 2007The possibility of ultra-wideband (UWB) radar use in various fields for remote measuring of the object's motion at short distance is considered. As an illustration UWB radar in medicine for remote measuring of patient's heart activity and respiration is shown. The measuring method is described and practical results of tests are cited.
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Ultra-Wideband Principles for Surface Penetrating Radar
2005SPRs will achieve wide industrial employment if they succeed in offering adapted solutions for a specific class of tasks. These solutions will be based on sophisticated methods of digital data processing which require stable, high quality data, increasingly gathered by antenna arrays. The future challenge on RF-electronics is to meet these requirements.
J. Sachs +4 more
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