Results 91 to 100 of about 146,803 (321)

Technologies and solutions for location-based services in smart cities: past, present, and future [PDF]

, 2018
Location-based services (LBS) in smart cities have drastically altered the way cities operate, giving a new dimension to the life of citizens. LBS rely on location of a device, where proximity estimation remains at its core. The applications of LBS range
Ansari, Imran Shafique, Asghar, Muhammad Rizwan, Granelli, Fabrizio, Qaraqe, Khalid A., Usman, Muhammad   +4 more
core   +2 more sources

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source

Integrated precise orbit determination for LEO constellation and BDS-3 MEO satellites using inter-satellite links and onboard BDS-3 observations

Satellite Navigation
By leveraging the high-precision spatial reference established with Global Navigation Satellite System (GNSS), we propose a low-ground-dependency and low-latency Precise Orbit Determination (POD) method employing onboard GNSS, Inter-Satellite Link (ISL ...
Geer Qin, Kecai Jiang, Min Li, Qile Zhao, Xin Xie, Youcun Wang, Chao Yang, Yubin Wang, Chuntao Chang   +8 more
doaj   +1 more source

An autonomous GNSS anti-spoofing technique [PDF]

, 2016
open3siIn recent years, the problem of Position, Navigation and Timing (PNT) resiliency has received significant attention due to an increasing awareness on threats and the vulnerability of the current GNSS signals.
Christian Wullems, Gianluca Caparra, Rigas T. Ioannides   +2 more
core   +1 more source

Sampling, Mobility, and Anchoring in Small‐Body Sampling Robots: A Comprehensive Review

SmartBot, EarlyView.
Small‐body sampling robots are exploration systems that perform contact, sampling, and stable operations on microgravity bodies such as asteroids and comets. The authors review representative robot architectures and key technologies, focusing on the mechanisms, evolution, and coupling of sampling, mobility, and anchoring.
Yurui Shen, Yixin Zhu, Mingxia Bao, Ting Zhang, Jun Wu, Jingbin Hao, Dezheng Hua, Xinhua Liu   +7 more
wiley   +1 more source

Online Estimation of the Mounting Angle and the Lever Arm for a Low-Cost Embedded Integrated Navigation Module

Remote Sensing
Multi-source fusion constitutes a research focus in the navigation domain. This article focuses on the online estimation of the mounting angles between the body frame and vehicle frame within low-cost embedded vehicle navigation modules and the lever arm
Qinghai Wang, Peihui Yan, Jinguang Jiang, Dongpeng Xie, Yuying Li, Qiyuan Zheng, Hongbin Tan, Jiaji Wu   +7 more
doaj   +1 more source

Quantitative Analysis to the Impacts of IMU Quality in GPS/INS Deep Integration

Micromachines, 2015
In the Global Positioning System (GPS)/Inertial Navigation System (INS) deep integration system, the pure negative effect of the INS aiding is mainly the INS navigation error that is independent with the motion dynamics, which determine whether the INS ...
Xiaoji Niu, Yalong Ban, Quan Zhang, Tisheng Zhang, Hongping Zhang, Jingnan Liu   +5 more
doaj   +1 more source

Quantifying microhabitat selection of snowshoe hares using forest metrics from UAS‐based LiDAR

Wildlife Biology, EarlyView.
Identifying the spatial and temporal scale at which animals select resources is critical for predicting how populations respond to changes in the environment. The spatial distribution of fine‐scale resources (e.g. patches of dense vegetation) are often linked with critical life‐history requirements such as denning and feeding sites.
Alexej P. K. Sirén, Franklin Sullivan, Rachel Cliché, Jeremy Goetz, Leighlan S. Prout, Jillian Kilborn, Katelyn Courtot, Michael Palace   +7 more
wiley   +1 more source

BDS Precise Point Positioning for Seismic Displacements Monitoring: Benefit from the High-Rate Satellite Clock Corrections

Sensors, 2016
In order to satisfy the requirement of high-rate high-precision applications, 1 Hz BeiDou Navigation Satellite System (BDS) satellite clock corrections are generated based on precise orbit products, and the quality of the generated clock products is ...
Tao Geng, Xing Su, Rongxin Fang, Xin Xie, Qile Zhao, Jingnan Liu   +5 more
doaj   +1 more source

EPOS-GNSS

, 2016
Dans le cadre de la phase de mise en œuvre du projet EPOS (European Plate Observing System), un centre de traitement paneuropéen est hébergé à l'Université Grenoble Alpes - CNRS, France. La solution prototype couvre la période 2005-2015 et comprend plus de 500 stations cGPS européennes.
Déprez, Aline, Socquet, Anne, Cotte, Nathalie, Walpersdorf, Andrea, Bato, M.G.   +4 more
openaire   +2 more sources