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Improving Maps of Physical and Virtual Radio Transmitters

Ulmschneider, Markus and Gentner, Christian (2018) Improving Maps of Physical and Virtual Radio Transmitters. In: Proceedings of 31th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2018. ION GNSS+ 2018, 24.-28. Sep. 2018, Miami, USA.

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Abstract

In multipath assisted positioning, each multipath component arriving at a receiver is regarded as being sent by a virtual transmitter in a line-of-sight condition. These virtual transmitters can be used for localizing a user. In the general case, their locations are unknown. With simultaneous localization and mapping (SLAM), the locations of physical and virtual transmitters can be estimated jointly with the location of a user. However, the convergence time can be high. In scenarios such as malls or museums, multiple users travel through the same scenario on different trajectories. Different users can cooperate by exchanging maps of physical and virtual transmitters in order to decrease the convergence time and increase the positioning performance. Though, each user is in its own local coordinate system. When a map of transmitters is handed from one user to another, the relative rotation and translation of the coordinate systems of the two users need to be estimated based on the transmitters in the two users’ maps. Within this paper, we propose an algorithm to merge and update an obtained transmitter map with the transmitters estimated by the current user. We evaluate our proposed method by simulations in an indoor mall. In a crowdsourcing based approach, maps are handed from one user to another, updated, and handed to the next user. Our evaluations show that exchanging transmitter maps improves the positioning performance, although each user is in its own local coordinate system not knowing the parameters relating its own coordinate system to the ones of obtained transmitter maps.

Item URL in elib:https://elib.dlr.de/121287/
Document Type:Conference or Workshop Item (Speech)
Title:Improving Maps of Physical and Virtual Radio Transmitters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ulmschneider, Markusmarkus.ulmschneider (at) dlr.dehttps://orcid.org/0000-0001-7241-7057
Gentner, Christianchristian.gentner (at) dlr.dehttps://orcid.org/0000-0003-4298-8195
Date:October 2018
Journal or Publication Title:Proceedings of 31th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Channel-SLAM, crowd-sourcing, virtual transmitters
Event Title:ION GNSS+ 2018
Event Location:Miami, USA
Event Type:international Conference
Event Dates:24.-28. Sep. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Project Navigation 4.0
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Ulmschneider, Markus
Deposited On:23 Nov 2018 14:14
Last Modified:31 Jul 2019 20:19

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