Results 21 to 30 of about 604,773 (322)
Landmark Attribute Analysis for a High-Precision Landmark-Based Local Positioning System
IEEE Access, 2021 GPS signals are not reliable in urban canyons or inside tunnels. In those situations, accurate local positioning is possible through local landmarks. This paper presents the potential accuracy of such a landmark-based local positioning system and the ...
Juhui Gim, Changsun Ahn, Huie Peng
doaj +1 more source
On extended Chebyshev systems with positive accuracy
Journal of Mathematical Analysis and Applications, 2017 Agraïments: The first author is supported by a FAPESP-BRAZIL grant 2013/16492-0. The second author is supported by UNAB13-4E-1604 grant. A classical necessary condition for an ordered set of n+1 functions F to be an ECT-system in a closed interval is that all the Wronskians do not vanish.
Douglas D. Novaes, Joan Torregrosa
openaire +4 more sources
Quantum enhanced positioning and clock synchronization [PDF]
, 2001 A wide variety of positioning and ranging procedures are based on repeatedly sending electromagnetic pulses through space and measuring their time of arrival.
A Peres +20 more
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Construction and Accuracy Analysis of a BDS/GPS-Integrated Positioning Algorithm for Forests
Croatian Journal of Forest Engineering, 2021 The objective of this study was to construct a BeiDou navigation satellite system (BDS)/ global positioning system (GPS)-integrated positioning algorithm that meets the accuracy requirement of forest surveys and to analyze its accuracy to provide ...
Fei Yan, Xueqi Hu, Lidan Xu, Yongrui Wu
doaj +1 more source
Underwater acoustic slant range measurements related to weather and sea state [PDF]
, 2018 Underwater range measurements are key factor in underwater acoustic positioning, used in Long Base-Line (LBL) or Ultra Short Base-Line (USBL) computing techniques. These measurements are commonly carried out through acoustic communications between modems
Aguzzi, Jacopo +5 more
core +1 more source
Implicit Cooperative Positioning in Vehicular Networks [PDF]
, 2017 Absolute positioning of vehicles is based on Global Navigation Satellite Systems (GNSS) combined with on-board sensors and high-resolution maps. In Cooperative Intelligent Transportation Systems (C-ITS), the positioning performance can be augmented by ...
Denis, Benoit +5 more
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Positioning performance analysis on combined GPS/BDS precise point positioning
Geodesy and Geodynamics, 2020 Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with the precise orbit and clock products from Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS), we studied the model of combined GPS/BDS precise ...
Jing Xiong, Fei Han
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A Study on the Application of WSN Positioning Technology to Unattended Areas
IEEE Access, 2019 Wireless sensor network (WSN) is a kind of self-organized network that plays a critical role in the rescue and relief work of some unattended areas in recent years.
Yanhui Lv, Yong Liu, Jiangfeng Hua
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Development of Precise Point Positioning Method Using Global Positioning System Measurements [PDF]
Journal of Astronomy and Space Sciences, 2011 Precise point positioning (PPP) is increasingly used in several parts such as monitoring of crustal movement and maintaining an international terrestrial reference frame using global positioning system (GPS) measurements.
Byung-Kyu Choi +4 more
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Non-Taylor series based positioning method for location based services [PDF]
, 2008 Location Based Services (LBS) has gained increasing popularity in major cities. Due to blocking from man-made structures, the existing Global Positioning System (GPS) could not satisfy LBS applications, especially in street canyon and indoor surroundings.
Reza, Ahmed Wasef +2 more
core +2 more sources