Open AccessResearch on global positioning system M‐code acquisition method and the acquisition performance
Author(s) -
Li Hong,
Lu Mingquan
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2013.0728
Subject(s) - computer science , code (set theory) , frequency domain , signal (programming language) , time domain , domain (mathematical analysis) , noise (video) , jamming , electronic engineering , algorithm , real time computing , computer engineering , engineering , mathematics , artificial intelligence , computer vision , mathematical analysis , physics , set (abstract data type) , image (mathematics) , thermodynamics , programming language
In global positioning system modernisation, to further enhance the anti‐jamming capability of authorised signals, the new designed M‐code signal utilises a few revolutionary techniques. While enduing the signal with excellent performance, the techniques make the acquisition methods for conventional pseudo‐noise codes, such as C/A‐code and P(Y)‐code, inapplicable. Furthermore, compared with time‐domain correlation, frequency‐domain correlation is favourable for saving computation requirements and suppressing interferences. Thus, it is quite desirable to develop frequency‐domain‐based ones. To this end, a frequency‐domain‐based acquisition method is developed, and based on the method the acquisition performance of M‐code signal is evaluated and the factors associated with the performance are investigated. It is shown that M‐code provides flexible tradeoffs between performance and implementation complexity through the sidebands and chips of the signal. Numerical and simulation results demonstrate the results.