Improved urban navigation with direct positioning and specular matching

Kirsten Strandjord, Penina Axelrad, Dennis M. Akos, Shan Mohiuddin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper introduces an assisted GPS direct positioning estimation (DPE) technique in conjunction with visibility and specularity matching techniques based on 3D building information for positioning in an urban environment. Results from static experiments in the city of Denver, CO are presented. The locations are chosen to demonstrate conditions where GPS signals reach the receiver in several different ways: a direct-line-of-sight (DLOS) path only; a combination of DLOS and non-line-of-sight (NLOS) paths known as multipath; and a strictly NLOS path with buildings blocking the DLOS path. Use of signal visibility and specular reflection predictions within the DPE can improve positioning. We show that when we explicitly account for visibility and have some indication of specularity the RMS position error is reduced from approximately 30 to 10 meters.

Original languageEnglish (US)
Title of host publicationION 2020 International Technical Meeting Proceedings
PublisherInstitute of Navigation
Pages787-800
Number of pages14
ISBN (Electronic)0936406240, 9780936406244
DOIs
StatePublished - 2020
Externally publishedYes
EventInstitute of Navigation International Technical Meeting 2020, ITM 2020 - San Diego, United States
Duration: Jan 21 2020Jan 24 2020

Publication series

NameION 2020 International Technical Meeting Proceedings

Conference

ConferenceInstitute of Navigation International Technical Meeting 2020, ITM 2020
Country/TerritoryUnited States
CitySan Diego
Period1/21/201/24/20

Bibliographical note

Funding Information:
This research was funded through a fellowship through The Charles Stark Draper Laboratory, Inc.

Publisher Copyright:
© 2020 ION 2020 International Technical Meeting Proceedings. All rights reserved.

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