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Enhanced collective detection for GNSS weak signals acquisition in Rayleigh channel
Author(s) -
Siham Dehouche,
Mhamed Hamadouche
Publication year - 2018
Publication title -
international journal of satellite communications and networking
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.388
H-Index - 39
eISSN - 1542-0981
pISSN - 1542-0973
DOI - 10.1002/sat.1236
Subject(s) - computer science , false alarm , gnss applications , rayleigh fading , constant false alarm rate , detection theory , real time computing , global positioning system , sensitivity (control systems) , channel (broadcasting) , satellite navigation , signal (programming language) , fading , algorithm , telecommunications , electronic engineering , artificial intelligence , detector , engineering , programming language
Summary Global navigation satellite system applications based on high sensitivity and weak‐signal acquisition is a difficult task and has become an important research area. Algorithms and techniques are proposed, principally those associated to cases of limited global navigation satellite system signal availability. Collective detection is a new technique that seems to offer better solutions in a such situation. This paper presents a performance analysis of GPS L 1 noncoherent acquisition via collective detection based on the systematic and efficient collective acquisition algorithm in the Rayleigh fading channel, firstly in the case of a fixed threshold detection and secondly in the case of adaptive threshold detection based on a constant false alarm rate. To compare these methods with traditional acquisition schemes, we develop detection and false alarm probability analytic expressions.