Change search
ReferencesLink to record
Permanent link

Direct link
Simulation of GNSS reflected signals and estimation of position accuracy in GNSS-challenged environment
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geodesy and Satellite Positioning.ORCID iD: 0000-0002-8792-3646
2015 (English)In: Journal of Geodetic Science, ISSN 2081-9919, E-ISSN 2081-9943, Vol. 5, no 1, 47-56 p.Article in journal (Refereed) Published
Abstract [en]

The paper describes the development and testing of a simulation tool, called QualiSIM. The tool estimates GNSS-based position accuracy based on a simulation of the environment surrounding the GNSS antenna, with a special focus on city-scape environments with large amounts of signal reflections from non-line-of-sight satellites. The signal reflections are implemented using the extended geometric path length of the signal path caused by reflections from the surrounding buildings. Based on real GPS satellite positions, simulated Galileo satellite positions, models of atmospheric effect on the satellite signals, designs of representative environments e.g. urban and rural scenarios, and a method to simulate reflection of satellite signals within the environment we are able to estimate the position accuracy given several prerequisites as described in the paper. The result is a modelling of the signal path from satellite to receiver, the satellite availability, the extended pseudoranges caused by signal reflection, and an estimate of the position accuracy based on a least squares adjustment of the extended pseudoranges. The paper describes the models and algorithms used and a verification test where the results of QualiSIM are compared with results from collection of real GPS data in an environment with much signal reflection.

Place, publisher, year, edition, pages
De Gruyter Open , 2015. Vol. 5, no 1, 47-56 p.
Keyword [en]
GNSS; navigation; position accuracy; reflected signals; simulation
National Category
Other Civil Engineering
Research subject
Geodesy and Geoinformatics
URN: urn:nbn:se:kth:diva-165958DOI: 10.1515/jogs-2015-0006OAI: diva2:809194

QC 20160310

Available from: 2015-04-30 Created: 2015-04-30 Last updated: 2016-03-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Jensen, Anna B. O.
By organisation
Geodesy and Satellite Positioning
In the same journal
Journal of Geodetic Science
Other Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 41 hits
ReferencesLink to record
Permanent link

Direct link