Results 31 to 40 of about 47,243 (312)

An Innovative Fingerprint Location Algorithm for Indoor Positioning Based on Array Pseudolite

Sensors, 2019
Since the signals of the global navigation satellite system (GNSS) are blocked by buildings, accurate positioning cannot be achieved in an indoor environment.
Lu Huang, Xingli Gan, Baoguo Yu, Heng Zhang, Shuang Li, Jianqiang Cheng, Xiaohu Liang, Boyuan Wang   +7 more
doaj   +1 more source

Overview of multipath mitigation technology in global navigation satellite system

Frontiers of Physics, 2022
The global navigation satellite system is a high-precision radio navigation system based on artificial satellites. Among the factors affecting the positioning accuracy of the navigation satellite system, the multipath signal is the most significant and ...
Zhihao Xue, Zukun Lu, Zhibin Xiao, Jie Song, Shaojie Ni   +4 more
semanticscholar   +1 more source

Direct Integration of Cold Sintered, Temperature-Stable Bi2Mo2O9-K2MoO4 Ceramics on Printed Circuit Boards for Satellite Navigation Antennas

Journal of the European Ceramic Society, 2020
Bi2Mo2O9-K2MoO4 (BMO-KMO) composite ceramics with >95% theoretical density were densified by cold sintering at 150 °C. XRD, Raman, back-scattered SEM and EDX spectroscopy indicated that the BMO and KMO phases coexisted in all composites without inter ...
Dawei Wang, B. Siame, Shiyu Zhang, Ge Wang, Xingshen Ju, Jinglei Li, Zhilun Lu, Y. Vardaxoglou, W. Whittow, D. Cadman, Shikuan Sun, Di Zhou, Kaixin Song, I. Reaney   +13 more
semanticscholar   +1 more source

Precise Point Positioning Algorithm for Pseudolite Combined with GNSS in a Constrained Observation Environment

Sensors, 2020
In urban canyon environments, Global Navigation Satellite System (GNSS) satellites are heavily obstructed with frequent rise and fall and severe multi-path errors induced by signal reflection, making it difficult to acquire precise, continuous, and ...
Chuanzhen Sheng, Xingli Gan, Baoguo Yu, Jingkui Zhang   +3 more
doaj   +1 more source

Optical clock technologies for global navigation satellite systems

GPS Solutions, 2021
Future generations of global navigation satellite systems (GNSSs) can benefit from optical technologies. Especially optical clocks could back-up or replace the currently used microwave clocks, having the potential to improve GNSS position determination ...
T. Schuldt, M. Gohlke, M. Oswald, J. Wüst, T. Blomberg, K. Döringshoff, A. Bawamia, A. Wicht, M. Lezius, K. Voss, M. Krutzik, S. Herrmann, E. Kovalchuk, A. Peters, C. Braxmaier   +14 more
semanticscholar   +1 more source

Unambiguous Acquisition/Tracking Technique Based on Sub-Correlation Functions for GNSS Sine-BOC Signals

Sensors, 2020
The autocorrelation function (ACF) of the Binary Offset Carrier modulation (BOC) signal for Global Navigation Satellite System (GNSS) has multiple peaks, ambiguity is easily generated during the synchronization of the baseband signal.
Fang Hao, Baoguo Yu, Xingli Gan, Ruicai Jia, Heng Zhang, Lu Huang, Boyuan Wang   +6 more
doaj   +1 more source

Advances in BeiDou Navigation Satellite System (BDS) and satellite navigation augmentation technologies

, 2020
Several noteworthy breakthroughs have been made with the BeiDou Navigation Satellite System (BDS) and other global navigation satellite systems as well as the associated augmentation systems, such as the commissioning of the BDS-3 preliminary system and ...
Rui Li, Shuaiyong Zheng, Ershen Wang, Jinping Chen, S. Feng, Dun Wang, L. Dai   +6 more
semanticscholar   +1 more source

Doppler Differential Positioning Technology Using the BDS/GPS Indoor Array Pseudolite System

Sensors, 2019
A Global Satellite Navigation System (GNSS) cannot provide normal location services in an indoor environment because the signals are blocked by buildings.
Xingli Gan, Baoguo Yu, Lu Huang, Ruicai Jia, Heng Zhang, Chuanzhen Sheng, Guangwei Fan, Boyuan Wang   +7 more
doaj   +1 more source

Demand and key technology for a LEO constellation as augmentation of satellite navigation systems

Satellite Navigation
A Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS).
Yuanxi Yang, Yue Mao, Xia Ren, Xiaolin Jia, Bijiao Sun   +4 more
semanticscholar   +1 more source

Angles-only Navigation to a Non-Cooperative Satellite using Relative Orbital Elements

, 2012
This work addresses the design and implementation of a prototype relative navigation tool that uses camera-based measurements collected by a servicer spacecraft to perform far- range rendezvous with a non-cooperative client in low Earth orbit.
S. D'amico, Ardaens, J.-S., Gaias, Gabriella, J-S Ardaens, D'Amico, Simone, G. Gaias   +5 more
core   +1 more source