Results 21 to 30 of about 166,338,206 (307)
Three-Dimensional Stopping Sight Distance Calculation Method under High Slope Restraint
Applied Sciences, 2020 Sight distance is an important indicator to ensure the safety of drivers, and is also an indispensable evaluation basis in highway safety engineering.
Yonghong Yang +3 more
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WiFi Access Points Line-of-Sight Detection for Indoor Positioning Using the Signal Round Trip Time
Remote Sensing, 2022 The emerging WiFi Round Trip Time measured by the IEEE 802.11mc standard promised sub-meter-level accuracy for WiFi-based indoor positioning systems, under the assumption of an ideal line-of-sight path to the user. However, most workplaces with furniture
Xu Feng, Khuong An Nguyen, Zhiyuan Luo
doaj +1 more source
Remote Sensing, 2019 The safe and efficient operation of highways largely depends on the adequate provision of sight distance. Small unmanned aerial vehicles (UAVs) can be utilized to efficiently complete data acquisition very soon after identifying an issue when searching ...
Luis Iglesias +3 more
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Underground positioning method of single base station DOA and TOA based on single reflectio
Gong-kuang zidonghua, 2015 In view of problem of big error in underground single base station positioning system due to wireless signal influenced by multipath effect and non-line of sight, a joint estimation positioning method of DOA and TOA based on single reflection was ...
HUANG Kai +3 more
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GIScience & Remote Sensing, 2021 Adequate sight distances are crucial parameters ruling the design of roads and riding facilities. LiDAR-retrieved data have proved to serve many transportation applications by creating updated and accurate representations of the road environment.
Keila González-Gómez +2 more
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(Dis)agreement on Sight-Singing Assessment of Undergraduate Musicians
Frontiers in Psychology, 2018 Assessment criteria for sight-singing abilities are similar to those used to judge music performances across music school programs. However, little evidence of agreement among judges has been provided in the literature. Fifty out of 152 participants were
Graziela Bortz +2 more
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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
A Novel LOS Decision Technique Reflecting 3D DTED for Modeling an Electronic Warfare Environment
Applied Sciences, 2021 A new line-of-sight (LOS) decision algorithm applicable to simulation of electronic warfare (EW) is developed. For accurate simulation, the digital terrain elevation data (DTED) of the region to be analyzed must be reflected in the simulation, and ...
Jaejoong Lee +5 more
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Mapping 3D visibility in an urban street environment from mobile LiDAR point clouds
GIScience & Remote Sensing, 2020 Visibility determination is a key requirement in a wide range of national and urban applications, such as national security, landscape management, and urban design.
Yi Zhao +9 more
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Jurnal Rekayasa Elektrika, 2021 Someone sometimes forgets to put their belongings so that they leave them somewhere, it will pose a risk of losing their belongings. To solve this problem, a reminder is needed so that it is expected to minimize the risk of loss.
Rafiqmia Khairuddin Nur Hammam +3 more
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