By Topic

A Differential Strategy for GNSS Weak Signals Acquisition in Presence of Bit Sign Transitions

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Kewen Sun ; Dipt. di Elettron., Politec. di Torino, Torino, Italy

In this paper, the problem of acquiring weak Global Navigation Satellite System (GNSS) signals of the next generation systems (such as Galileo and GPS modernization) is addressed and analyzed, focusing the majority of the attention to the Cross Ambiguity Function (CAF) peak splitting problem caused by the presence of sign transition due to the navigation message in the data channel or the secondary code in the pilot channel. A new two steps acquisition strategy has been proposed in order to mitigate the CAF peak impairments. To achieve better acquisition sensitivity, differentially coherent detection scheme has been considered. When two steps acquisition strategy is employed in the differentially coherent detection scheme, the sign transition problem can be solved and much improved acquisition performance can be obtained specifically in a severe weak signal environment. The validity and effectiveness of the proposed technique has been deeply assessed with simulation analysis.

Published in:

2010 6th International Conference on Wireless Communications Networking and Mobile Computing (WiCOM)

Date of Conference:

23-25 Sept. 2010