Results 1 to 10 of about 104,320 (215)
Line-of-Sight MIMO in Point-to-Point Millimeter Wave Links via Scattering From Rough Surfaces
IEEE Access, 2023 We analyze a point-to-point MIMO communication system over a deterministic channel with two paths: line-of-sight (LoS) and a scattered path over a rough surface. We characterize the MIMO channel capacity as a function of the root-mean-square (RMS) surface roughness and provide three important findings: 1) capacity is monotonically decreasing with the ...
CARLOS A Viteri-Mera
exaly +3 more sources
Framework for 3D Point Cloud Modelling Aimed at Road Sight Distance Estimations [PDF]
Remote Sensing, 2019 Existing roads require periodic evaluation in order to ensure safe transportation. Estimations of the available sight distance (ASD) are fundamental to make sure motorists have sufficient visibility to perform basic driving tasks. Mobile LiDAR Systems (MLS) can provide these evaluations with accurate three-dimensional models of the road and ...
Castro Maria +2 more
exaly +4 more sources
Lattice Point Visibility on Generalized Lines of Sight [PDF]
The American Mathematical Monthly, 2018 For a fixed $b\in\mathbb{N}=\{1,2,3,\ldots\}$ we say that a point $(r,s)$ in the integer lattice $\mathbb{Z} \times \mathbb{Z}$ is $b$-visible from the origin if it lies on the graph of a power function $f(x)=ax^b$ with $a\in\mathbb{Q}$ and no other integer lattice point lies on this curve (i.e., line of sight) between $(0,0)$ and $(r,s)$.
Edray Goins +3 more
openaire +2 more sources
Improving the sampling strategy for point-to-point line-of-sight modelling in urban environments [PDF]
International Journal of Geographical Information Science, 2016 Visibility modelling calculates what an observer could theoretically see in the surrounding region based on a digital model of the landscape. In some cases it is not necessary, nor desirable, to compute the visibility of an entire region (i.e. a viewshed), but instead it is sufficient and more efficient to calculate the visibility from point-to-point ...
Bartie, Phil, Mackaness, William
openaire +3 more sources
Mobile capture of remote points of interest using line of sight modelling [PDF]
Computers & Geosciences, 2013 Recording points of interest using GPS whilst working in the field is an established technique in geographical fieldwork, where the user’s current position is used as the spatial reference to be captured; this is known as geo-tagging. We outline the development and evaluation of a smartphone application called Zapp that enables geo-tagging of any ...
Sam Meek +3 more
openaire +1 more source
Robust line-of-sight pointing control on-board a stratospheric balloon-borne platform
CoRR, 2021 Submitted to CEAS EuroGNC ...
Kassarian, Ervan +4 more
openaire +4 more sources
Sight View Constraint for Robust Point Cloud Registration
CoRRPartial to Partial Point Cloud Registration (partial PCR) remains a challenging task, particularly when dealing with a low overlap rate. In comparison to the full-to-full registration task, we find that the objective of partial PCR is still not well-defined, indicating no metric can reliably identify the true transformation.
Yaojie Zhang +4 more
openaire +2 more sources
Malware Sight-Seeing: Accelerating Reverse-Engineering via Point-of-Interest-Beacons
CoRR, 2021 New types of malware are emerging at concerning rates. However, analyzing malware via reverse engineering is still a time-consuming and mostly manual task. For this reason, it is necessary to develop techniques that automate parts of the reverse engineering process and that can evade the built-in countermeasures of modern malware. The main contribution
August See +4 more
openaire +2 more sources
Performance Studies from a short-sighted point of view
Mantichora, 2020 What is Performance Studies? What is Performance? What is the role of a fieldworker trying to understand what Performance Studies does? This is a brief consideration related to a wider attempt of approaching the phenomenon of Performance Studies "as performance", studying it through the methodological lens of the field itself. A work in progress for a "
openaire +2 more sources
Out of sight, out of mind? Removal of point-of-sale tobacco displays in Norway [PDF]
Tobacco Control, 2012 To evaluate retailer's compliance and consumer's perceptions of and experiences with the point-of-sale (POS) tobacco display ban in Norway, implemented 1 January 2010.Retailer compliance was measured using audit surveys. Consumer's perceptions of the ban were assessed in three web surveys: one conducted before and two after implementation of the ban ...
Scheffels, Janne, Lavik, Randi
openaire +2 more sources