Results 1 to 10 of about 251 (164)
T-RAIM for Precise Orbit Determination in LEO-PNT [PDF]
SensorsThe rapid development of Low Earth Orbit Position, Navigation, and Timing (LEO-PNT) constellations presents opportunities to augment Global Navigation Satellite Systems (GNSSs) with additional signals from Low Earth Orbit (LEO) satellites, thereby ...
Ciro Gioia +4 more
exaly +6 more sources
A Performance Study on the Combination of Available GNSS and Potential LEO-PNT Constellations
IEEE AccessWith the reduction in the launch and manufacturing costs of satellites, there has been a surge of interest in Low-Earth Orbit (LEO) satellites from both the industrial and academic sectors in recent years.
Elena-Simona Lohan, Kaan Celikbilek
exaly +6 more sources
Analysis of Baseband Algorithms for LEO PNT
Engineering Proceedings, 2023 This paper provides an analysis of the impact of transmitter dynamics on baseband algorithms for position, navigation and timing applications using a low Earth orbit constellation. In particular, the acquisition and tracking of signals with high dynamics
Fran Fabra +2 more
doaj +5 more sources
IEEE Access, 2022 More and more satellites are populating the sky nowadays in the Low Earth orbits (LEO). Most of the targeted applications are related to broadband and narrowband communications, Earth observation, synthetic aperture radar, and internet-of-Things (IoT ...
Sanna Kaasalainen +2 more
exaly +3 more sources
The Potential of LEO-PNT Mega-Constellations for Ionospheric 3-D Imaging: A Simulation Study
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 The rapid increase of the number of low Earth orbit (LEO) satellites brings up the possibility of LEO satellite missions transmitting dedicated signals for positioning, navigation, and timing (PNT).
Mohammed Mainul Hoque +2 more
exaly +3 more sources
Convergence of Iterative Descent Algorithms for LEO-PNT
IEEE AccessPositioning Navigation and Timing (PNT) from Low Earth Orbit (LEO) has been gaining momentum in the last couple of years. LEO-PNT can serve as an alternative to current Global Navigation Satellite Systems (GNSS) or as an addition to the current system ...
Wout Van Uytsel +3 more
doaj +3 more sources
A Novel Satellite PRN Code Assignment Method Based on Improved RLF Algorithm [PDF]
Sensors, 2022 Low Earth Orbit (LEO) satellites have stronger received signals and more rapid geometry changes than Global Navigation Satellite System (GNSS) satellites, making them attractive for positioning, navigation, and timing (PNT) applications.
Weiwei Wang +5 more
doaj +2 more sources
Improvements in PPP by Integrating GNSS with LEO Satellites: A Geometric Simulation [PDF]
SensorsThe precise point positioning (PPP) method in GNSS is based on the processing of undifferenced phase observations. For long static sessions, this method provides results characterized by accuracies better than one centimeter, and has become a standard ...
Marianna Alghisi +2 more
doaj +2 more sources
Performance Analysis of the Pilot and Data Component of a CSS Signal for LEO-PNT
Engineering Proceedings, 2023 From the analysis of chirp spread spectrum (CSS) signals in radar and communication applications, we can distinguish the cases of estimating only data or time-delay propagation or Doppler frequency when all the other parameters are known or set to zero ...
Daniel Egea-Roca +2 more
doaj +4 more sources
BeiDou Augmented Navigation from Low Earth Orbit Satellites [PDF]
Sensors, 2019 Currently, the Global Navigation Satellite System (GNSS) mainly uses the satellites in Medium Earth Orbit (MEO) to provide position, navigation, and timing (PNT) service.
Mudan Su +3 more
doaj +2 more sources