Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Hedley J. Hansen"'
Publikováno v:
IEEE Access, Vol 8, Pp 74743-74758 (2020)
Prediction of the severity of multipath fading is fundamental to the design of point-to-point terrestrial fixed microwave links at frequencies below 10 GHz, but error in this prediction may be significant in countries such as Australia, not represent
Externí odkaz:
https://doaj.org/article/c873ffb400aa4f018fe5a124fb363685
Publikováno v:
IEEE Access, Vol 5, Pp 8064-8093 (2017)
The next generation of wireless communications, which is proposed to operate in the mmWave region of the electromagnetic spectrum, offers the potential of high-data rate and increased coverage in response to a rapid growth of mobile data traffic. Ope
Externí odkaz:
https://doaj.org/article/5703b4baf809432d86773a6435b6522d
Publikováno v:
IEEE Access, Vol 3, Pp 1684-1694 (2015)
An electromagnetic wave propagating through the ionosphere is subject to path delay and the depolarizing effect of Faraday rotation, both of which are dependent on global position and geometry. These effects introduce error and consequently reduce th
Externí odkaz:
https://doaj.org/article/984cb77a70594df792e8e9df27e6bf3b
Publikováno v:
Royal Society Open Science, Vol 2, Iss 12 (2015)
Millimetre-waves offer the possibility of wide bandwidth and consequently high data rate for wireless communications. For both uni- and dual-polarized systems, signals sent over a link may suffer severe degradation due to antenna misalignment. Orient
Externí odkaz:
https://doaj.org/article/64c26af9509846f5ae43cccfa304089a
Autor:
M.Kerrmann, Jorg M. Hacker, Hedley J. Hansen, Andrew S. Kulessa, J.Claverie, Alex Vanderklugt
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
This paper describes some of the airborne atmospheric measurements, within the atmospheric surface layer, undertaken during the TAPS field campaign. A hybrid (flux –Bulk) model for refractivity is outlined which makes suitable use of the aircraft d
Autor:
Alex Vanderklugt, Hedley J. Hansen, Jorg M. Hacker, Stephen J. Salamon, Andrew S. Kulessa, Martin Veasey
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
The paper presents a case study investigating the effect of turbulence on microwave X-band reception. Path loss estimates for the X-band link operated during the Tropical Air-Sea Propagation Study (TAPS) in the Coral Sea in November-December 2013 hav
Publikováno v:
International Journal of Satellite Communications and Networking. 36:44-65
Summary Electromagnetic signals propagating through the ionosphere are subject to path delay and the depolarizing effect of Faraday rotation. These are both dependent on global position and link geometry, which constantly vary for satellites in non-g
Publikováno v:
Royal Society Open Science, Vol 6, Iss 3 (2019)
Royal Society Open Science
Royal Society Open Science
The eye may perceive a significant trend in plotted time-series data, but if the model errors of nearby data points are correlated, the trend may be an illusion. We examine generalized least-squares (GLS) estimation, finding that error correlation ma
Publikováno v:
Transactions on Emerging Telecommunications Technologies. 27:992-999
Millimetre-waves offer the possibility of wide bandwidth and consequently high-data rate for wireless communications. For both uni-polarised and dual-polarised systems, signals sent over a link may suffer severe degradation because of antenna misalig
Autor:
Hedley J. Hansen, M. Attygalle, Martin Veasey, Jorg M. Hacker, Keith Mason, Andrew S. Kulessa, Alex Vanderklugt, Stephen J. Salamon, Alex Baldock
Publikováno v:
2018 International Conference on Radar (RADAR).
Anomalous propagation of microwave and millimetric radiation in the surface boundary layer makes assessment of radio wave systems difficult and subject to significant error due the variability of meteorological parameters. The validation of models re