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Wolfhard J. Vogel
Researcher at University of Texas at Austin
Publications - 46
Citations - 732
Wolfhard J. Vogel is an academic researcher from University of Texas at Austin. The author has contributed to research in topics: Communications satellite & Smart antenna. The author has an hindex of 15, co-authored 46 publications receiving 719 citations.
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Propagation effects for land mobile satellite systems: Overview of experimental and modeling results
TL;DR: In this paper, the authors present experimental results for the expressed use of communications engineers, designers of planned land mobile satellite systems (LMSS), and modelers of propagation effects for the United States associated with rural and suburban regions.
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Experimental evaluation of smart antenna system performance for wireless communications
TL;DR: Experimental results of diversity gain, interference cancellation, and mitigation of multipath fading obtained by using a smart antenna system in typical wireless scenarios are presented.
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Tree attenuation at 869 MHz derived from remotely piloted aircraft measurements
Wolfhard J. Vogel,J. Goldhirsh +1 more
TL;DR: In this article, tree attenuation results are described based on data acquired from an experiment employing UHF transmissions at 869 MHz between a remotely piloted aircraft and a stationary vehicle, where the objective of the experiment was directed toward providing input to the land mobile satellite community where the extent of shadowing from roadside trees represents important information to be used for system design.
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Using GPS to measure ground complex permittivity
TL;DR: In this article, ground specular reflection was measured over grass and asphalt surfaces using a GPS receiver to characterise the effect at L-band, and by matching experimental results to a simulation, ground electrical characteristics were derived.
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Experimental studies of spatial signature variation at 900 MHz for smart antenna systems
TL;DR: In this paper, the authors present extensive experimental results of spatial signature variation using a smart antenna testbed, including time, frequency, small displacement, multipath angle spread and beamforming performance.