Title :
Novel fast GPS/GLONASS code-acquisition technique using low update rate FFT
Author :
Coenen, A.J.R.M. ; van Nee, D.J.R.
Author_Institution :
Delft Univ. of Technol., Netherlands
fDate :
4/23/1992 12:00:00 AM
Abstract :
A novel ´differential´ decoding technique is proposed which enables pre-averaging instead of postintegration for a substantially low update rate ´FFT-IFT´ correlation in spread-spectrum (navigational) receivers. N-channel code acquisition can be performed to monitor the time dispersion with FFT time left to analyse frequency dispersion in highly reflective areas (e.g. an urban environment).
Keywords :
fast Fourier transforms; radionavigation; satellite relay systems; GLONASS; GPS; N-channel code acquisition; code-acquisition technique; differential decoding technique; fast code acquisition; fast code acquisition technique; frequency dispersion analysis; highly reflective areas; low update rate FFT; pre-averaging; time dispersion; urban environment;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920545
