Multipath Mitigation with Elevation-Enhanced Maps

Error free vehicular positioning is necessary for the success of a number of safety and liability-critical positioning-based applications. However, in certain environments such as built-in areas it appears difficult that the Global Positioning System (GPS) signals arrive at the receiver antenna without suffering from multipath reflections, causing GPS outliers and wrong estimates of the position. This paper introduces a solution for mitigating the multipath effects in urban canyons based on a rather simple but sufficient description of the elevation environment stored in a digital map, an Elevation Enhanced Map or EEMap. The algorithm detects whether or not the solution given by the GPS system includes aberrant pseudo range measurements due to the reflection of the satellite signals in the surrounding buildings, and if it is the case, the wrong measurements are discarded.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References;
  • Pagination: 13p
  • Monograph Title: 18th ITS World Congress, Orlando, 2011. Proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01487329
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 17 2013 9:38AM