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Implementation of a vector-based tracking loop receiver in a pseudolite navigation system.

Hyoungmin So1, Taikjin Lee, Sanghoon Jeon

  • 1School of Mechanical and Aerospace Engineering and SNU-IAMD, Seoul National University, Daehak-dong, Kwanak-gu, Seoul, 151-744, Korea. hyoungmin.so@gmail.com

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|December 14, 2011
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Summary
This summary is machine-generated.

A new vector tracking loop (VTL) algorithm addresses the near-far problem in asynchronous pseudolite navigation. This innovation improves positioning availability and extends navigation coverage in indoor environments.

Keywords:
GPSindoor navigationpseudolitesoftware receivervector tracking loop

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Area of Science:

  • Navigation Systems
  • Signal Processing
  • Indoor Positioning

Background:

  • Pseudolite navigation systems face limitations due to the near-far problem, hindering signal tracking and positioning accuracy.
  • Asynchronous pseudolite systems require robust algorithms to manage signal interference and maintain continuous navigation.

Purpose of the Study:

  • To introduce and evaluate a novel vector tracking loop (VTL) algorithm for asynchronous pseudolite navigation.
  • To assess the VTL algorithm's effectiveness in overcoming the near-far problem and enhancing indoor navigation.
  • To determine the potential of the VTL algorithm in improving positioning availability and coverage.

Main Methods:

  • Development of a vector tracking loop (VTL) algorithm.
  • Implementation of the VTL algorithm within a software-defined receiver.
  • Conducting experimental tests in an indoor navigation environment.

Main Results:

  • The VTL algorithm demonstrated successful signal tracking, effectively mitigating the near-far problem.
  • Experimental results confirmed the VTL's capability to maintain navigation performance under challenging signal conditions.
  • The VTL algorithm showed potential for extending the coverage and availability of pseudolite-based navigation.

Conclusions:

  • The proposed VTL algorithm is a viable solution for asynchronous pseudolite navigation systems.
  • The VTL algorithm significantly improves robustness against the near-far problem, a key challenge in pseudolite navigation.
  • This algorithm enhances positioning availability and extends navigation coverage, particularly beneficial for indoor applications.