GDOP-based analysis of suitability of LEO constellations for future satellite-based positioning

Ruben Morales-Ferre, Elena Simona Lohan, Gianluca Falco, Emanuela Falletti

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

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Abstract

There are efforts worldwide to build and launch new Low Earth Orbit (LEO) satellites for a multitude of communication and remote-sensing applications. The high number of LEO satellites soon to be available, their relative proximity to Earth compared to GNSS satellites, as well as the potential of Doppler-based positioning makes these LEO systems good candidates for future positioning solutions, to complement the existing GNSS and terrestrial navigation. LEO systems for Positioning, Navigation, and Time (PNT), briefly referred to as LEO-PNT, can be built either by reusing the existing constellations as signals of opportunity (SoO), or by building new LEO constellations optimized for the positioning purpose. The goal of this paper is to offer a comprehensive comparison in terms of code-based and Doppler-based Geometric Dilution of Precision (GDOP) between existing LEO systems and to discuss the optimization steps to follow in building novel LEO-PNT constellations for best positioning performance. We show that existing broadband LEO constellation with thousands or more satellites are good candidates for SoO in positioning and they can offer close to 100% coverage.
Original languageEnglish
Title of host publication2020 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)
PublisherIEEE
Pages147-152
Number of pages6
ISBN (Electronic)978-1-7281-6451-9
DOIs
Publication statusPublished - 12 Oct 2020
Publication typeA4 Article in a conference publication
Event IEEE International Conference on Wireless for Space and Extreme Environments - Vicenza, Italy
Duration: 12 Oct 202014 Oct 2020

Publication series

Name
ISSN (Print)2380-7628
ISSN (Electronic)2380-7636

Conference

Conference IEEE International Conference on Wireless for Space and Extreme Environments
Country/TerritoryItaly
CityVicenza
Period12/10/2014/10/20

Keywords

  • Low earth orbit satellites
  • Satellites
  • Global navigation satellite system
  • Planetary orbits
  • Receivers
  • Satellite navigation systems
  • Position measurement

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Aerospace Engineering
  • Safety, Risk, Reliability and Quality
  • Instrumentation

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