Results 1 to 10 of about 45,129 (306)

Fuzzy Logic Vehicle Positioning System Based on Chromaticity and Frequency Components of LED Illumination

open access: yesIEEE Photonics Journal, 2019
Given their wide applicability, vehicle positioning systems are being actively studied currently. As the conventional global positioning system (GPS) cannot determine the vehicle position inside tunnels and other GPS-shaded areas, we propose to improve ...
Jae Hoon Jeong, Gi Sig Byun, Kiwon Park
doaj   +1 more source

MONITORING OF LANDSLIDES WITH MASS MARKET GPS: AN ALTERNATIVE LOW COST SOLUTION [PDF]

open access: yes, 2013
The territory of Italy is seriously afflicted by hydrological risk, with 82% of its area affected by this phenomenon. In recent years, technologies and advanced research have played an important role in realizing complex automatic systems devoted to ...
M. Piras   +5 more
core   +1 more source

Case: The Global Positioning System (GPS) [PDF]

open access: yes, 2014
Abstract : This case uses the development of the Global Positioning System (GPS) to help students develop skills related to decision-making using cost-benefit analysis (CBA). It is the purpose of cost-benefit analysis to weigh the benefits (or justification) of an investment or policy against the potential costs of the investment (or other alternatives)
Katherine LoPiccalo, Jesse M. Cunha
openaire   +1 more source

GPS – Global Positioning System

open access: yes, 2016
Esta coleção dedica-se a selecionar objetos que, em conjunto, permitam uma exposição e aprofundamento do funcionamento do GPS (Global Positioning System), de utilização cada vez mais difundida na sociedade, seja em aparelhos celulares ou automóveis.
Filho, Nestor Cortez Saavedra
core   +1 more source

Redundant multi-mode filter for a navigation system [PDF]

open access: yes, 2007
An approach is introduced to the design of a multi-mode navigation filter to combine a low-cost skewed redundant inertial measurement unit (SRIMU) with a multifunctional GPS (MF-GPS) receiver in order to implement a fault-tolerant aircraft navigation ...
Jia, Huamin, Allerton, David J.
core   +1 more source

Unmanned aerial vehicle positioning based on multi-sensor information fusion

open access: yesGeo-spatial Information Science, 2018
Unmanned aerial vehicle (UAV) positioning is one of the key techniques in the field of UAV navigation. Although the high positioning precision of UAV can be achieved through global positioning system (GPS), the frequency of updating signal in GPS is low ...
Wenjun Li, Zhaoyu Fu
doaj   +1 more source

Performances of a GNSS receiver for space-based applications [PDF]

open access: yes, 2010
Space Vehicle (SV) life span depends on its station keeping capability. Station keeping is the ability of the vehicle to maintain position and orientation. Due to external perturbations, the trajectory of the SV derives from the ideal orbit.
Boutillon, Emmanuel   +3 more
core  

An Approach to Improve the Positioning Performance of GPS/INS/UWB Integrated System with Two-Step Filter

open access: yesRemote Sensing, 2017
The integration of Inertial Navigation System (INS) and Global Positioning System (GPS) single-point-positioning (SPP) mode cannot meet the requirements of high-accuracy navigation.
Zengke Li   +3 more
doaj   +1 more source

Real-Time Water Vapor Maps from a GPS Surface Network: Construction, Validation, and Applications

open access: yes, 2009
In this paper the construction of real-time integrated water vapor (IWV) maps from a surface network of global positioning system (GPS) receivers is presented.
Holleman, I.   +2 more
core   +1 more source

Production of regional 1 km x 1 km water vapor fields through the integration of GPS and MODIS data [PDF]

open access: yes, 2004
<p>Atmospheric water vapor is a crucial element in weather, climate and hydrology. With the recent advance in Global Positioning System (GPS) Meteorology, ground-based GPS has become an operational tool that can measure precipitable water vapor ...
Li, Z.
core  

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