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

Kurt Louis Kosbar, Missouri University of Science and Technology
Hettiachchi Upul Gunawardana

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/1517

There were 6 downloads as of 28 Jun 2016.

Abstract

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.