Results 261 to 270 of about 56,406 (306)
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2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
The CHILL radar was originally designed as dual polarization radar. It was put into operation in late 1971. The original concept was a dual frequency X-band and S-band system. In 1972, the idea of using it as polarization radar was suggested by Drs. Tom Seliga and Viswanathan Bringi.
Eugene A. Mueller, David A. Brunkow
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The CHILL radar was originally designed as dual polarization radar. It was put into operation in late 1971. The original concept was a dual frequency X-band and S-band system. In 1972, the idea of using it as polarization radar was suggested by Drs. Tom Seliga and Viswanathan Bringi.
Eugene A. Mueller, David A. Brunkow
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Spatial modulation with dual-polarized antennas
2015 IEEE International Conference on Communications (ICC), 2015In this work, multiple-input multiple-output (MIMO) communication employing spatial modulation (SM) is considered with dual-polarized antennas over correlated Rayleigh and Rician channels. A general average bit-error probability (ABEP) upper bounding framework is presented for the dual-polarized SM-MIMO systems.
Golara Zafari, Mutlu Koca, Hikmet Sari
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Miniaturization of an UWB Dual-Polarized Antenna
2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB), 2015For some UWB applications (short range radars,medical imaging), it has been shown that the use of an antennathat supports a dual-polarization can enhance their accuracy.However, the size of classic UWB dual-polarized antennas makestheir integration into small devices difficult.
Lorho, Nina +5 more
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A dual-polarization rain profiling algorithm
IEEE Transactions on Geoscience and Remote Sensing, 2006A new attenuation correction algorithm based on profiles of reflectivity, differential reflectivity, and differential propagation phase shift is presented. A solution for specific attenuation retrieval in rain medium is proposed, which solves the integral equations for reflectivity and differential reflectivity with cumulative differential propagation ...
Sanghun Lim, Venkatachalam Chandrasekar
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MODELLING OF DUAL-POLARIZATION INTERFEROMETRY IN STELLARATORS
Problems of Atomic Science and Technology, 2019The dual polarization interferometers have been designed and applied in the Uragan-3M and Uragan-2M torsa-trons. However, an extensive modeling of microwave propagation through the plasma in the sheared magnetic field should be provided for correct interpretation of data.
Filippov, V., Grekov, D., Azarenkov, N.
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Enhanced dual polarization directional coupler for dual polarization beam forming networks
2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017), 2002Directional couplers and fixed phase shifters are the key components for the realization of beam forming networks. Usually a beam forming network feeds the antenna with two linear and orthogonal polarizations. Dual polarization components can be used to reduce complexity and size of a beam forming network.
F. Alessandri +3 more
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2009
This invention relates to an antenna (1 ) of the type comprising a casing (3) having a reflector (5) defining a slot (7) and a PCB board (9) carrying a plurality of radiating elements (10) and a feed harness (11 ). The radiating elements and the feed harness form a dual polarized antenna pattern. The PCB is mounted in the casing and protrudes outwardly
BROWNE JAMES +3 more
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This invention relates to an antenna (1 ) of the type comprising a casing (3) having a reflector (5) defining a slot (7) and a PCB board (9) carrying a plurality of radiating elements (10) and a feed harness (11 ). The radiating elements and the feed harness form a dual polarized antenna pattern. The PCB is mounted in the casing and protrudes outwardly
BROWNE JAMES +3 more
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Quaternion Modulation for Dual-Polarized Antennas
IEEE Communications Letters, 2017This letter presents a new modulation scheme for dual-polarized antennas based on the theory of quaternion. First, we introduce the concept of quaternions to represent states of polarized antennas and data transmission. Second, we describe a detector based on the quaternion expression for polarized wireless systems and its corresponding theoretical ...
Jian-Feng Gu, Ke Wu
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1982
This paper presents a new fiber optic gyro configuration that is designed to provide independence from the principal bias errors due to the phase modulator. The configuration operates with optimum Π/2 phase shift for gyro sensitivity, 2x increase in scale factor and has been experimentally shown to provide a lOx improvement in immunity to modulator ...
J. G. Hanse, G. L. Mitchell, P. E. Bjork
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This paper presents a new fiber optic gyro configuration that is designed to provide independence from the principal bias errors due to the phase modulator. The configuration operates with optimum Π/2 phase shift for gyro sensitivity, 2x increase in scale factor and has been experimentally shown to provide a lOx improvement in immunity to modulator ...
J. G. Hanse, G. L. Mitchell, P. E. Bjork
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2016
In this chapter, we study dual polar spaces. These are certain point-line geometries that are closely related to polar spaces. We study several properties of these geometries and describe several families. Dual polar spaces are examples of near polygons.
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In this chapter, we study dual polar spaces. These are certain point-line geometries that are closely related to polar spaces. We study several properties of these geometries and describe several families. Dual polar spaces are examples of near polygons.
openaire +1 more source