Creating and sharing knowledge for telecommunications

Performance Analysis of a VDFLL GNSS Receiver Architecture under Ionospheric Scintillation and Multipath Conditions

Sousa, F. ; Nunes, F.

Performance Analysis of a VDFLL GNSS Receiver Architecture under Ionospheric Scintillation and Multipath Conditions, Proc IEEE Position, Location and Navigation Symp. - PLANS, Monterey-San Francisco, United States, Vol. I, pp. 602 - 611, May, 2014.

Digital Object Identifier: 0

Abstract
A noncoherent vector delay/frequency-locked loop
(VDFLL) architecture for GNSS receivers is proposed. A bank
of code and frequency discriminators feeds a central extended
Kalman filter that estimates the receiver’s position and velocity,
besides the clock error. The VDFLL architecture performance
is compared with the one of the classic scalar receiver, both
for scintillation and multipath scenarios, in terms of position
errors. We show that the proposed solution is superior to the
conventional scalar receivers, which tend to lose lock rapidly,
due to the sudden drops of the received signal power.