Challenges for GNSS-based high precision positioning - some geodetic aspects

authored by: S. Schön, F. Dilßner
Abstract: In geodesy, GNSS-based methods are widely used for positioning and navigation. Since the precision (< some mm) and accuracy (< 1 cm) requirements are very high, sophisticated correction models and analysis strategies were developed, e.g. like the network RTK concept realised in different active permanent reference station networks. However, multipath and signal diffraction as well as the incomplete stochastic model for GNSS observations limits still the attainable accuracy and precision, especially for real time applications. In this paper, we focus on multipath and diffraction mitigation. The state of the art procedures for mitigation are revisited as well as the challenges for new strategies are addressed and explained using examples from the Satellite Positioning Service of the German National Survey (SAPOS) and from typical geodetic monitoring networks. Finally the importance of a complete stochastic model for GPS observations for statistically tests and meaningful interpretations of the results is underlined.
Organisation(s): Institute of Geodesy
Type: Conference contribution
Pages: 229-237
No. of pages: 9
Publication date: 30.04.2007
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Engineering
Electronic version(s): https://doi.org/10.1109/WPNC.2007.353639 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{87ebfc3686b0432285755d232e5b6a77,
title = "Challenges for GNSS-based high precision positioning - some geodetic aspects",
abstract = "In geodesy, GNSS-based methods are widely used for positioning and navigation. Since the precision (< some mm) and accuracy (< 1 cm) requirements are very high, sophisticated correction models and analysis strategies were developed, e.g. like the network RTK concept realised in different active permanent reference station networks. However, multipath and signal diffraction as well as the incomplete stochastic model for GNSS observations limits still the attainable accuracy and precision, especially for real time applications. In this paper, we focus on multipath and diffraction mitigation. The state of the art procedures for mitigation are revisited as well as the challenges for new strategies are addressed and explained using examples from the Satellite Positioning Service of the German National Survey (SAPOS) and from typical geodetic monitoring networks. Finally the importance of a complete stochastic model for GPS observations for statistically tests and meaningful interpretations of the results is underlined.",
keywords = "Diffraction, GNSS, Multipath, Stochastic model",
author = "S. Sch{\"o}n and F. Dil{\ss}ner",
year = "2007",
month = apr,
day = "30",
doi = "10.1109/WPNC.2007.353639",
language = "English",
isbn = "1424408717",
pages = "229--237",
booktitle = "4th Workshop on Positioning, Navigation and Communication 2007 (WPNC'07)",
note = "4th Workshop on Positioning, Navigation and Communication 2007, WPNC'07 ; Conference date: 22-03-2007",
}