Results 61 to 70 of about 243 (163)

Pulsed Orthogonal Time Frequency Space: A Fast Acquisition and High-Precision Measurement Signal for Low Earth Orbit Position, Navigation, and Timing

Remote Sensing
The recent rapid development of low Earth orbit (LEO) constellation-based navigation techniques has enhanced the ability of position, navigation, and timing (PNT) services in deep attenuation and interference environments.
Dong Fu, Honglei Lin, Ming Ma, Muzi Yuan, Gang Ou   +4 more
doaj   +1 more source

A Technical Overview of Current “New Space” LEO-PNT Initiatives and Their Application Potential

2024 IEEE 35th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)
Abstract: The current satellite Positioning, Navigation and Timing (PNT) landscape is evolving rapidly. This is characterized by a shift from governmental initiatives to private enterprises. These "New Space" initiatives aim to improve PNT performance beyond the current state-of-the-art by implementing new technical advancements.
Wout Van Uytsel, Thomas Janssen, Maarten Weyn, Rafael Berkvens   +3 more
openaire   +2 more sources

Joint Communication and Navigation From LEO Multi-Beam Satellite

IEEE Open Journal of the Communications Society
This paper investigates an innovative approach to enable Joint Communication and Positioning (JCAP) in 5G Non-Terrestrial Networks (NTN) using Low Earth Orbit (LEO) multi-beam satellite systems. The integration of communication and navigation services is
Alejandro Gonzalez-Garrido, Jorge Querol, Henk Wymeersch, Symeon Chatzinotas   +3 more
doaj   +1 more source

OFDM-Based Positioning With Unknown Data Payloads: Bounds and Applications to LEO PNT

IEEE Transactions on Wireless Communications
This paper presents bounds, estimators, and signal design strategies for exploiting both known pilot resources and unknown data payload resources in time-of-arrival (TOA)-based positioning systems with orthogonal frequency-division multiplexing (OFDM) signals.
Andrew M. Graff, Todd E. Humphreys
openaire   +2 more sources

Non-Cooperative LEO Satellite Orbit Determination Using Single Station for Space-Based Opportunistic Positioning

Remote Sensing
Space-based opportunistic positioning is a crucial component of resilient positioning, navigation, and timing (PNT) systems, and it requires the acquisition of orbit information for non-cooperative low Earth orbit (LEO) satellites.
Ruofan Deng, Honglei Qin, Yu Zhang
doaj   +1 more source

An Integrity Monitoring Method for Navigation Satellites Based on Multi-Source Observation Links

Remote Sensing
The BeiDou-3 navigation satellite system (BDS-3) has officially provided positioning, navigation, and timing (PNT) services to global users since 31 July 2020.
Jie Xin, Dongxia Wang, Kai Li
doaj   +1 more source

Analysis of 5G and LTE Signals for Opportunistic Navigation and Time Holdover. [PDF]

Sensors (Basel), 2023
Winter A, Morrison A, Sokolova N.
europepmc   +1 more source

Orbit Determination Method for BDS-3 MEO Satellites Based on Multi-Source Observation Links

Remote Sensing
Research on augmentation and supplement systems for navigation systems has become a significant aspect in comprehensive positioning, navigation and timing (PNT) studies.
Jie Xin, Kai Li
doaj   +1 more source

User Equivalent Range Error and Positioning Accuracy Analysis for ToA-Based Techniques Using PRS and SSB in 5G/6G NTN

IEEE Open Journal of the Communications Society
The integration of Non-Terrestrial Network (NTN) within the Fifth Generation (5G) and Sixth Generation (6G) ecosystem offers new opportunities for global Positioning, Navigation, and Timing (PNT) services, particularly in environments where Global ...
Idir Edjekouane, Alejandro Gonzalez-Garrido, Jorge Querol, Symeon Chatzinotas   +3 more
doaj   +1 more source

Performance Evaluation of CentiSpace Navigation Augmentation Experiment Satellites. [PDF]

Sensors (Basel), 2023
Chen L, Lv F, Yang Q, Xiong T, Liu Y, Yang Y, Pan H, Wang S, Liu M, He R, Zheng D, Zhang L, Jin Y.   +12 more
europepmc   +1 more source