Results 1 to 10 of about 126 (57)
Calculation of Weighted Geometric Dilution of Precision
Journal of Applied Mathematics, 2013 To achieve high accuracy in wireless positioning systems, both accurate measurements and good geometric relationship between the mobile device and the measurement units are required.
Chien-Sheng Chen +3 more
doaj +3 more sources
Weighted Geometric Dilution of Precision Calculations with Matrix Multiplication
Sensors, 2015 To enhance the performance of location estimation in wireless positioning systems, the geometric dilution of precision (GDOP) is widely used as a criterion for selecting measurement units.
Chien-Sheng Chen
doaj +4 more sources
International Journal of Intelligent Networks, 2021 Positioning accuracy of any navigation system plays a vital role in precise positioning applications like CAT-1 aircraft landings, surveying, etc. GNSS positioning accuracy can be affected by many factors like multipath, refraction in atmospheric layers,
Ch. Rajasekhar +2 more
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A Data-Driven Factor Graph Model for Anchor-Based Positioning
Sensors, 2023 This work presents a data-driven factor graph (FG) model designed to perform anchor-based positioning. The system makes use of the FG to compute the target position, given the distance measurements to the anchor node that know its own position.The aim ...
Ana Moragrega, Carles Fernández-Prades
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Neural Network for WGDOP Approximation and Mobile Location
Mathematical Problems in Engineering, Volume 2013, Issue 1, 2013., 2013 This paper considers location methods that are applicable in global positioning systems (GPS), wireless sensor networks (WSN), and cellular communication systems. The approach is to employ the resilient backpropagation (Rprop), an artificial neural network learning algorithm, to compute weighted geometric dilution of precision (WGDOP), which represents
Chien-Sheng Chen +3 more
wiley +2 more sources
SensorsGlobal Navigation Satellite Systems (GNSS) have undergone more than half a century of development and construction, with more than a hundred navigation satellites currently providing precise and reliable positioning, navigation, and timing (PNT) services
Yue Zuo, Yibin Yao, Mingxian Hu
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A Weighted Geometric Dilution of Precision-Based Method for Indoor Positioning System
Journal of Communications, 2020 The weaknesses of ranging techniques on using RSS in indoor localization are fluctuating the RSS values. This situation will affect to the accuracy of distance measurement between anchor and target node.
A. D. Ramadhani +2 more
semanticscholar +1 more source
ISPRS Int. J. Geo Inf., 2021 The positioning accuracy of a ground-based system in an indoor environment is closely related to the geometric configuration of pseudolites. This paper presents a simple closed-form equation for computing the weighted horizontal dilution of precision ...
Xinyang Zhao +4 more
semanticscholar +1 more source
Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019 Geographical distribution of global navigation satellite system (GNSS) ground monitoring stations affects the accuracy of satellite orbit, earth rotation parameters (ERP), and real‐time satellite clock offset determination. The geometric dilution of precision (GDOP) is an important metric used to measure the uniformity of the stations distribution ...
Xu Yang +3 more
wiley +1 more source
IET Wireless Sensor Systems, 2020 In wireless localization systems, the performance enhancement of location estimation is an important goal. In recent years, different positioning systems using an ultra ‐ wide band (UWB) technology have been created, and always an evaluation metric to ...
Abbas Albaidhani, Ahlam Alsudani
semanticscholar +1 more source