Open AccessMathematical analyses of pulse interference signal on post‐correlation carrier‐to‐noise ratio for the global positioning system receivers
Author(s) -
Bek Mohammad K.,
Shaheen Ehab M.,
Elgamel Sherif A.
Publication year - 2015
Publication title -
iet radar, sonar and navigation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.489
H-Index - 82
eISSN - 1751-8792
pISSN - 1751-8784
DOI - 10.1049/iet-rsn.2014.0155
Subject(s) - interference (communication) , signal (programming language) , pulse (music) , signal to noise ratio (imaging) , noise (video) , electronic engineering , carrier to noise ratio , correlation , computer science , physics , telecommunications , engineering , mathematics , artificial intelligence , channel (broadcasting) , image (mathematics) , programming language , geometry , detector
Vulnerability of global positioning system (GPS) receiver to interference signals is one of the major issues of many applications, as the satellite navigation signal has a very low power under the noise floor level. To this end, pulse interference (PUI) may cause severe performance degradation to the GPS receivers. This study analyses the PUI effect on the GPS receiver correlator output. Novel and more accurate closed‐form analytical expressions are derived for the PUI power at the correlator output. The post‐correlation carrier‐to‐noise ratio for the GPS L1 coarse acquisition (C/A) signal is analytically derived in the presence of PUI and additive white Gaussian noise. In order to simplify the derived analytical expressions, a classification is done depending on the relationship between the C/A code spectrum and the PUI spectrum. Several PUI parameters were varied such as interference frequency, pulse period and duty cycle to investigate the influence of these parameters on the GPS correlator output.