Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Urs Hugentobler"'
Autor:
Pacôme Delva, Zuheir Altamimi, Alejandro Blazquez, Mathis Blossfeld, Johannes Böhm, Pascal Bonnefond, Jean-Paul Boy, Sean Bruinsma, Grzegorz Bury, Miltiadis Chatzinikos, Alexandre Couhert, Clément Courde, Rolf Dach, Véronique Dehant, Simone Dell’Agnello, Gunnar Elgered, Werner Enderle, Pierre Exertier, Susanne Glaser, Rüdiger Haas, Wen Huang, Urs Hugentobler, Adrian Jäggi, Ozgur Karatekin, Frank G. Lemoine, Christophe Le Poncin-Lafitte, Susanne Lunz, Benjamin Männel, Flavien Mercier, Laurent Métivier, Benoît Meyssignac, Jürgen Müller, Axel Nothnagel, Felix Perosanz, Roelof Rietbroek, Markus Rothacher, Harald Schuh, Hakan Sert, Krzysztof Sosnica, Paride Testani, Javier Ventura-Traveset, Gilles Wautelet, Radoslaw Zajdel
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-33 (2023)
Abstract Improving and homogenizing time and space reference systems on Earth and, more specifically, realizing the Terrestrial Reference Frame (TRF) with an accuracy of 1 mm and a long-term stability of 0.1 mm/year are relevant for many scientific a
Externí odkaz:
https://doaj.org/article/16c3384694674586b2fb0f1e65c507fc
Publikováno v:
Satellite Navigation, Vol 3, Iss 1, Pp 1-13 (2022)
Abstract Geodetic applications of Low Earth Orbit (LEO) satellites requires accurate satellite orbits. Instead of using onboard Global Navigation Satellite System observations, this contribution treats the LEO satellite constellation independently, u
Externí odkaz:
https://doaj.org/article/fa81778b12464d4da49486ab4593f6a7
Publikováno v:
Engineering Proceedings, Vol 54, Iss 1, p 14 (2023)
The Galileo High-Accuracy Service (HAS) is providing free Precise Point Positioning (PPP) corrections for Galileo and GPS satellites through the E6b signal and the internet. Currently, HAS should provide a horizontal and vertical 95% accuracy below 2
Externí odkaz:
https://doaj.org/article/bce71e1a4238481bbaed8ea85a83f821
Publikováno v:
Remote Sensing, Vol 15, Iss 20, p 4897 (2023)
The ACES mission of the European Space Agency combines optical and microwave-based geodetic observation techniques with highly accurate atomic clocks to achieve a new level of accuracy for geodesy and fundamental physics applications. In addition, th
Externí odkaz:
https://doaj.org/article/056455b23e8949e384ae6d979e7ce626
Publikováno v:
Geosciences, Vol 13, Iss 6, p 173 (2023)
Today, concepts within the Global Geodetic Observing System (GGOS) aim a Terrestrial Reference System (TRS) with 1 mm accuracy and long-term stability of 0.1 mm/year. GETRIS (Geodesy and Time Reference In Space) is a concept that aims to realize a re
Externí odkaz:
https://doaj.org/article/bb781a51ab584d09a16df05e1b42322a
Autor:
Juri Sidorenko, Volker Schatz, Dimitri Bulatov, Norbert Scherer-Negenborn, Michael Arens, Urs Hugentobler
Publikováno v:
IEEE Access, Vol 8, Pp 65726-65733 (2020)
Self-calibration of time-of-arrival positioning systems is made difficult by the non-linearity of the relevant set of equations. This work applies dimension lifting to this problem. The objective function is extended by an additional dimension to all
Externí odkaz:
https://doaj.org/article/aec68a0440614e60b2d2edaa1236355d
Autor:
Juri Sidorenko, Volker Schatz, Dimitri Bulatov, Norbert Scherer-Negenborn, Michael Arens, Urs Hugentobler
Publikováno v:
Sensors, Vol 20, Iss 7, p 2079 (2020)
The time-difference-of-arrival (TDOA) self-calibration is an important topic for many applications, such as indoor navigation. One of the most common methods is to perform nonlinear optimization. Unfortunately, optimization often gets stuck in a loca
Externí odkaz:
https://doaj.org/article/341360b1884a4dcbbd4d86507bb9c08a
Autor:
Francisco Molina Martel, Juri Sidorenko, Christoph Bodensteiner, Michael Arens, Urs Hugentobler
Publikováno v:
Sensors, Vol 19, Iss 20, p 4366 (2019)
In this work we introduce a relative localization method that estimates the coordinate frame transformation between two devices based on distance measurements. We present a linear algorithm that calculates the relative pose in 2D or 3D with four degr
Externí odkaz:
https://doaj.org/article/e6b6e0b71e374600ac2d0365e3ff9da9
Publikováno v:
Sensors, Vol 19, Iss 13, p 2942 (2019)
The position accuracy based on Decawave Ultra-Wideband (UWB) is affected mainly by three factors: hardware delays, clock drift, and signal power. This article discusses the last two factors. The general approach to clock drift correction uses the pha
Externí odkaz:
https://doaj.org/article/8783bd9bc5d74789b48adc1e1b2b3ff3
Autor:
Georgios Pipelidis, Omid Reza Moslehi Rad, Dorota Iwaszczuk, Christian Prehofer, Urs Hugentobler
Publikováno v:
Sensors, Vol 18, Iss 2, p 480 (2018)
In this paper, we present our novel approach for the crowdsourced dynamic vertical mapping of buildings. For achieving this, we use the barometric sensor of smartphones to estimate altitude differences and the moment of the outdoor to indoor transiti
Externí odkaz:
https://doaj.org/article/9c591197a948424385989c8bfa8a86e5