Results 71 to 80 of about 1,168 (189)

An Optimization Method for Indoor Pseudolites Anchor Layout Based on MG-MOPSO

Remote Sensing
To address the challenge of optimizing the layout of pseudolite anchor points in complex indoor environments with significant occlusions, this paper proposes a multi-objective particle swarm optimization algorithm (MG-MOPSO).
Xiaohu Liang, Shuguo Pan, Shitong Du, Baoguo Yu, Shuang Li   +4 more
doaj   +1 more source

Performance analysis and simulation of Iridium navigation satellite based on STK

, 2012
The navigation performance of Iridium satellite is simulated and analyzed based on STK from two aspectsthe number of visible satellites and geometric dilution of precision (GDOP).
Fan, Shiyue, Lijun Zhao, Xiao, Wenjun, Shiyue Fan, Zhenghang Li, Zhao, Lijun, Wenjun Xiao, Li, Zhenghang   +7 more
core   +1 more source

A Navigation Satellites Selection Method Based on ACO With Polarized Feedback

IEEE Access, 2020
Selecting the optimal satellite subset for positioning from all satellites in view can not only achieve positioning accuracy but also reduce the computational burden.
Huazheng Du, Yunqing Hong, Na Xia, Guofu Zhang, Yongtang Yu, Jiwen Zhang   +5 more
doaj   +1 more source

Positioning Geometric Strength Analysis of the COMPASS Navigation System for Global and Regional Users

, 2011
Based on the mixed and heterogeneous constellation characteristics of the COMPASS navigation system, the weighted dilution of precision (WDOP) is applied to analyze the positioning geometric strength, and the results are compared with the geometric ...
Peng Cheng Nie, Dong Yun Yi, Jing Yao
core   +1 more source

Low orbit regional enhanced navigation constellation for BDS3 design based on Bayesian optimization algorithm

Geodesy and Geodynamics
The application of Low Earth Orbit (LEO) satellite navigation can enhance geometric structure, increase observations and contribute to navigation and positioning. To improve the performance of the navigation constellation in China, this study proposes an
Chunhua Jiang, Zhenyu Luo, Meiqian Guan, Huizhong Zhu   +3 more
doaj   +1 more source

An analysis of GDOP in global positioning system navigation

, 1980
The accuracy of user navigation fix based on the NAVSTAR global positioning system is described. The trace of this matrix serves as a convenient navigation performance index and the square root of the trace is called geometric dilution of precision (GDOP)
Fang, B. T.
core  

A New Fast Satellite Selection Algorithm for BDS-GPS Receivers

, 2013
Satellite selection plays an important role in preventing unnecessary computation for the receivers with limited processing units in GPS and BDS dual-mode Global Navigation Satellite System (GNSS).
Bocheng Zhu, Shan Wang, Meng, Fanchen, Fanchen Meng, Zhu, Bocheng, Wang, Shan   +5 more
core   +1 more source

GDOP Based BS Selection for Positioning in mmWave 5G NR Networks

, 2023
The fifth-generation (5G) of mobile communication supported by millimetre-wave (mmWave) technology and higher base station (BS) densification facilitate to enhance user equipment (UE) positioning.
Rajatheva, Nandana, Perera, A. Indika, Latva-aho, Matti, Manosha, K. B. Shashika   +3 more
core  

Low Earth Orbit Constellations Design with Good Dilution of Precision

, 2014
The geometry of the visible satellites is an important factor in achieving high quality results for GPS (Global Positioning System). A measure for the geometry is the Geometric Dilution of Precision (GDOP) factor. Small values of GDOP parameters indicate
Ma, Der-Ming
core  

How to Select TDOA-Based Bearing Measurements for Improved Passive Triangulation Localization

, 2019
When time difference of arrival (TDOA)-based bearing measurements are used in passive triangulation, the accuracy of localization depends on the geometric relationship between the emitter and the sensors.
Song, Woo-Jin, Song, Kyu-Ha, Kim, San-Hae   +2 more
core   +1 more source