Tailored spreading symbols in "Strobe Correlators" using "W2-pulses"

Authors:
Jinghui Wu;Andrew G. Dempster
Affiliations:
School of Surveying and Spatial Information Systems, Faculty of Engineering, University of New South Wales, EE 413a, Kensington, Sydney 2052, Australia;School of Surveying and Spatial Information Systems, Faculty of Engineering, University of New South Wales, EE 413a, Kensington, Sydney 2052, Australia
Venue:
Signal Processing
Year:
2012

Citing 3
Cited 0

Digital signal processing (3rd ed.): principles, algorithms, and applications

Digital signal processing (3rd ed.): principles, algorithms, and applications
A Novel Unambiguous Multipath Mitigation Scheme for BOC(kn, n) Tracking in GNSS

SAINT-W '07 Proceedings of the 2007 International Symposium on Applications and the Internet Workshops
Tracking performance and average error analysis of GPS discriminators in multipath

Signal Processing

Quantified Score

Hi-index	0.08

Visualization

Abstract

A ''Strobe Correlator'' is a correlation-based multipath mitigation technique that utilizes tailored reference waveform to shape the discriminator function for tracking Global Navigation Satellite System (e.g. Global Positioning System) signals. Multipath performance of these techniques for Binary Phase Shift Keying (BPSK) signals has been discussed for decades but for some, their noise performance may not be easily evaluated analytically. In this paper, a theoretical framework is provided for noise evaluation of ''Strobe Correlators'' using complex strobes for both BPSK and sine-phased Binary Offset Carrier (e.g. BOC(1,1)) signals. Mathematical expressions of the tailored spreading symbols as key factors are derived and used for theoretical code tracking variance analysis of various correlation techniques including the ''Gating Function'' using a complex strobe-pulse liked waveform (i.e. ''W2-pulses''). Empirical results for the sine-phased BOC(1,1) signal are given as verification. Analytical results reveal that the techniques using a W2-pulse suffer from higher code tracking variance than others, due to increased sensitivity to noise. The sensitivity to pre-correlation bandwidth is found to relate to the relative placement of the strobe pulses.