Results 41 to 50 of about 46,869 (239)
Journal of Marine Science and Engineering, 2020 This case study aims to investigate the effect of different Multi-GNSS EXperiment (MGEX) precise products provided by International GNSS Service (IGS) Analysis Centers (ACs) on post-processing kinematic Precise Point Positioning (PPP) accuracy ...
Serdar Erol
doaj +1 more source
An evaluation of GNSS radio occultation atmospheric profiles from Sentinel-6
Egyptian Journal of Remote Sensing and Space Sciences, 2023 The Global Navigation Satellite System (GNSS) radio occultation (RO) significantly impacts climate change monitoring. GNSS RO is based mainly on the refraction of the GNSS signals transmitted by satellites and received by a receiver on a Low Earth Orbit (
Mohamed Zhran
doaj +1 more source
GPS and property surveying [PDF]
, 2015 In 2010 the Global Positioning System (GPS) developed by the United States military was the best known Global Navigation Satellite System (GNSS). Others included Russia’s GLONASS, China’s COMPASS and Europe’s GALILEO systems.
Drummond, J.
core
On the Impact of Channel Cross-Correlations in High-Sensitivity Receivers for Galileo E1 OS and GPS L1C Signals [PDF]
, 2012 One of the most promising features of the modernized global navigation satellite systems signals is the presence of pilot channels that, being data-transition free, allow for increasing the coherent integration time of the receivers.
Dovis, Fabio +2 more
core +3 more sources
Archaeological Prospection, EarlyView.ABSTRACT This study investigates the effectiveness of drone‐based remote sensing and Google Earth satellite imagery for archaeological prospection in the Bayan Gol Valley, Central Mongolia. Utilizing a fixed‐wing unmanned aerial vehicle (UAV) equipped with RGB and multispectral sensors, we surveyed 655 ha to document Mongol‐period settlement structures
Peter Heimermann +4 more
wiley +1 more source
On Fault Detection and Exclusion in Snapshot and Recursive Positioning Algorithms for Maritime Applications [PDF]
, 2016 Resilient provision of Position, Navigation and Timing (PNT) data can be considered as a key element of the e-Navigation strategy developed by the International Maritime Organization (IMO). An indication of reliability has been identified as a high level
Lanca, Luis +2 more
core +1 more source
Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR
River Research and Applications, EarlyView.ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert +5 more
wiley +1 more source
Galileo: the added value for integrity in harsh environments [PDF]
, 2015 A global navigation satellite system (GNSS)-based navigation is a challenging task in a signal-degraded environments where GNSS signals are distorted by multipath and attenuated by fading effects: the navigation solution may be inaccurate or unavailable.
BORIO DANIELE, GIOIA Ciro
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.This study develops a novel application of UAV‐LiDAR and Red Green Blue (RGB) data and network analysis to enhance our understanding of boreal forest succession. The results indicate that tree height and spectral variables are the most influential predictors of plant functional type in random forest algorithms, and high overall accuracies were attained.
Léa Enguehard +9 more
wiley +1 more source
Contributo para o estabelecimento de uma rede permanente GNSS para monitorização dos sistemas vulcânicos ativos do arquipélago dos Açores [PDF]
, 2015 Dissertação de Mestrado, Vulcanologia e Riscos Geológicos, 17 de Novembro de 2015, Universidade dos Açores.O trabalho apresentado no âmbito desta tese foca-se no estudo da deformação crustal em sistemas vulcânicos ativos, através da aplicação da técnica ...
Araújo, João Pedro Martins Teixeira
core