Visualising Location Uncertainty to Support Navigation under Degraded GPS Signals: a Comparison Study

Champika Ranasinghe, Nicholas Schiestel, Christian Kray

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

Degraded GPS signals can negatively affect users of mobile Pedestrian Navigation Applications. Visualization of location uncertainty has emerged as a solution to this problem that has proven beneficial to users. However, there are only a small number of different visualizations developed for this purpose. In addition, their actual impact on facilitating navigation in GPS degraded situations has not been studied well. We designed two new visualizations of location uncertainty and compared them to existing ones in terms of efficiency and user acceptance. A field-based user study(N=18) showed that the two new visualizations significantly reduced the number of wrong turns. Users preferred the landmark-based visualization most and ranked it as the most helpful visualization for judging their true location in the environment when faced with GPS degradations. Despite participants being unfamiliar with the new visualizations, the task completion time, subjective task load and user experience for them were not significantly different from the more familiar state-of-the-art visualization.
Original languageEnglish
Title of host publicationMobileHCI '19
Subtitle of host publicationProceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and ServicesOctober 2019 Article
Place of PublicationNew York, NY
PublisherACM Publishing
Pages1-11
Number of pages11
ISBN (Print)978-1-4503-6825-4
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event21st International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI 2019 - Taipei, Taiwan, Province of China
Duration: 1 Oct 20194 Oct 2019
Conference number: 21

Conference

Conference21st International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI 2019
Abbreviated titleMobileHCI
CountryTaiwan, Province of China
CityTaipei
Period1/10/194/10/19

Keywords

  • Pedestrian navigation
  • Mobile services
  • GPS
  • Visualization
  • Location uncertainty

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