naa a22 4500 510793649 CHVBK 20180411083328.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11277-012-0779-z doi (NATIONALLICENCE)springer-10.1007/s11277-012-0779-z Weak Satellite Signal Tracking Loop Based on Traditional Tracking Framework [Elektronische Daten] [Yang Liu, Jun Zhang, Yanbo Zhu] Global Satellite Navigation System (GNSS) is applied widely in many fields nowadays, but is still quite limited under complex signal environments, especially weak signal situation. And the major limitation comes from the signal tracking algorithm in GNSS receiver. To solve this problem, this paper mainly deals with performance enhancement for traditional tracking framework. By inviting definition of digital equivalent bandwidth and analyzing sensitivity and stability, this framework is deeply discussed, and the relationship between correlation time and loop bandwidth setting becomes clearer. Based on this foundation, an adaptive tracking algorithm is proposed with longer correlation time under vibrated signal attenuation situation, via statistical learning of carrier phase discriminator outputs. Experiments demonstrate that our proposed algorithm outweighs the traditional one with more gain of sensitivity and stable adaptation under attenuated data situation. Springer Science+Business Media, LLC., 2012 Traditional tracking framework nationallicence Weak signal tracking nationallicence Digital equivalent bandwidth nationallicence Statistical learning adaptation nationallicence Liu Yang School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut Zhang Jun School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut Zhu Yanbo School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1761-1775 0929-6212 70:4<1761 2013 70 11277 https://doi.org/10.1007/s11277-012-0779-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0779-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Yang School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Jun School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhu Yanbo School of Electronic and Information, BeiHang University, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1761-1775 0929-6212 70:4<1761 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer