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Your search keyword '"Polarization matching"' showing total 5 results
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5 results on '"Polarization matching"'

1. Spatial Processing Using High-Fidelity Models of Dual-Polarization Antenna Elements.

Author

Spitzmiller, John N. and Choi, Sanyi Y.

Subjects
*ANTENNAS (Electronics), *ANTENNA arrays, *SPATIAL filters, *SPACE-time block codes
Abstract

This paper generalizes a recent improvement to a traditional spatial-processing algorithm to optimally use body-mounted arrays of dual-polarization radio-frequency antenna elements rather than singlepolarization antenna elements. The paper's generalized algorithm exploits high-fidelity far-field gain and polarization data, generated most practically by a computational electromagnetic solver (CES), to characterize the antenna array's individual dual-polarization elements. Using this characterization and that of the desired and undesired communication nodes' antennas, the generalized algorithm determines the array's optimal weights. The subsequent application of a CES to a practical scenario, in which an optimally weighted array of dualpolarization antenna elements is mounted on a representative body, demonstrates the generalized algorithm's exceptional spatial-processing performance. [ABSTRACT FROM AUTHOR]

Published
2022
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2. Experimental system and results for wide-band multi-polarization VHF radar.

Author

Chen Baixiao, Zheng Guimei, Yang Minglei, Li Shili, and Chen Genhua

Abstract

For synthetically utilizing frequency and polarization information to improve the abilities of radar detection and recognition, an experimental system with wide-band multi-polarization VHF radar is presented. And the field experimental results are introduced in detail. [ABSTRACT FROM PUBLISHER]

Published
2011
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3. Ultrawide Bandwidth Wavelength Monitor Based on a Pair of Tilted Fiber Bragg Gratings.

Author

Tissot, Y., Limberger, H.G., and Salathe, R.-P.

Abstract

A wavelength monitor based on a pair of tilted fiber Bragg gratings is reported. The monitor exhibits a subpicometer wavelength selectivity over a broad wavelength range (>30 nm), and a low insertion loss (<1 dB) for laser light with polarization matching the reference polarization of the device. Simulations show that a wavelength coverage up to 100 nm is possible and that the resolution degradation due to changes in the polarization state can be avoided by proper design of the gratings. [ABSTRACT FROM PUBLISHER]

Published
2007
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4. Statistics of polarisation matching

Author

H.W.L. Naus and A.P.M. Zwamborn

Subjects
Electromagnetic field, Engineering, Matching (statistics), ED - Electronic Defence, Field (physics), Statistical methods, Acoustics, Defence Research, Defence, Safety and Security, Signal-to-noise ratio, Physics & Electronics, Electronic engineering, Electrical and Electronic Engineering, Computer Science::Information Theory, TS - Technical Sciences, Polarization matching, Stochastic process, business.industry, Physics, Electromagnetic fields, Stochastic analysis, Atomic and Molecular Physics, and Optics, Probability distribution, Antennas, Antenna (radio), business, Noise (radio)
Abstract

The reception of electromagnetic signals depends on the polarisation matching of the transmitting and receiving antenna. The practical matching differs from the theoretical one because of the noise deterioration of the transmitted and eventually received electromagnetic field. In other applications, the polarisation parameters of the receiving antenna are not known. Both problems are addressed by means of statistical methods, analytical as well as simulation results are obtained. The variation of the noisy matching factor depends mainly on the signal-to-noise ratio. The resulting probability distribution for the polarisation matching factor in case of a stochastic receiver is independent of the phase difference, but strongly affected by the axis ratio of the incident polarised field.

Published
2014

5. Statistics of polarisation matching

Subjects
Safety and Security, ED - Electronic Defence, TS - Technical Sciences, Polarization matching, Statistical methods, Physics & Electronics, Physics, Defence Research, Defence, Antennas, Electromagnetic fields, Stochastic analysis, Computer Science::Information Theory
Abstract

The reception of electromagnetic signals depends on the polarisation matching of the transmitting and receiving antenna. The practical matching differs from the theoretical one because of the noise deterioration of the transmitted and eventually received electromagnetic field. In other applications, the polarisation parameters of the receiving antenna are not known. Both problems are addressed by means of statistical methods, analytical as well as simulation results are obtained. The variation of the noisy matching factor depends mainly on the signal-to-noise ratio. The resulting probability distribution for the polarisation matching factor in case of a stochastic receiver is independent of the phase difference, but strongly affected by the axis ratio of the incident polarised field.

Published
2014

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