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Correlative Tracking of Pseudo-Noise Codes using a Phase Shifted Reference

Research output: Contribution to journal › Article › peer-review

Abstract

This work investigates a first-order correlation loop for tracking pseudo-noise (PN) codes. The local reference is produced by a PN sequence generator in series with a Hilbert transform filter. The tracking performance of this non-linear loop is compared with conventional early-late delay-lock loops (ELDLL). Using a conservative definition of bandwidth, the new loop was found to be superior at moderate to low signal-to-noise ratios (SNR). Another advantage of the new structure is that it has a very large (arguably infinite) lock range.

Keywords

  • Bandwidth
  • Correlation Methods
  • Correlative Tracking
  • Digital Filters
  • First-Order Correlation Loop
  • Hilbert Transform Filter
  • Hilbert Transforms
  • Lock Range
  • Nonlinear Filters
  • Nonlinear Loop
  • PN Sequence Generator
  • Phase Shifted Reference
  • Pseudonoise Codes
  • Signal-To-Noise Ratios
  • Synchronisation
  • Tracking Filters
  • Tracking Performance

Disciplines

  • Electrical and Computer Engineering

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