Location and Navigation with Ultra-Wideband Signals

Abstract

Existing positioning and navigation applications mainly rely on GNSS. However, its application to indoor, metropolitan and heavy-foliage scenarios is significantly constrained by the satellite visibility, limited accuracy and the intensively frequency-selective channel condition. In this research, we investigated ranging and localization techniques using ultra-wideband (UWB) signals. In particular, we have developed two time-of-arrival (ToA) estimators for single-band UWB signals. To generalize them to multi-band UWB signals, we investigated the pros and cons of coherent and non-coherent multi-band signal combining, and studied the phase rotation calibration in order to facilitate effective coherent combining. Last but not least, we developed cooperative localization algorithms based on semi-definite programming (SDP) and developed algorithms based on semi-definite programming (SDP) and developed algorithms exploiting Doppler shift in mobile scenarios. On these subjects, we have published/submitted 13 peer-reviewed journal and conference papers.

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Document Details

Document Type
Technical Report
Publication Date
Jun 07, 2012
Accession Number
ADA564175

Entities

People

  • J. R. Harris
  • Liuqing Yang

Organizations

  • University of Florida

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Amplitude Modulation
  • Angle Of Arrival
  • Computational Complexity
  • Detectors
  • Doppler Effect
  • Engineering
  • Estimators
  • Frequency Domain
  • Modulation
  • Modulators
  • Numerical Analysis
  • Orthogonal Frequency Division Multiplexing
  • Radial Velocity
  • Sensor Networks
  • Wireless Communications

Fields of Study

  • Engineering

Readers

  • Operations Research
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Radio communications and signal processing.

Technology Areas

  • Space