Title :
New Fast GPS code-acquisition technique using FFT
Author :
van Nee, D.J.R. ; Coenen, A.J.R.M.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
A new spread-spectrum code-acquisition technique for the navigation systems Navstar/GPS and Glonass is introduced. This technique uses the FFT to compute the correlation function, thereby eliminating the time-consuming code phase shift process. Comparisons with existing systems show a theoretical reduction in acquisition time of about 2000 times.
Keywords :
correlators; encoding; fast Fourier transforms; radionavigation; spread spectrum communication; FFT; Glonass navigation system; acquisition time; correlation function; fast Fourier transforms; navigation systems Navstar/GPS; spread-spectrum code-acquisition technique;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910102
