Title :
A Doppler bins elimination algorithm in a GPS signal acquisition system
Author :
Lu, Weijun ; Li, Ying ; Yu, Dunshan ; Zhang, Xing
Author_Institution :
Inst. of Microelectron., Peking Univ., Beijing, China
Abstract :
A Doppler bins elimination algorithm for a global positioning system (GPS) signal acquisition system is proposed. We use a two-step digital down conversion scheme in which an estimated Doppler frequency corresponds with two frequencies in the received signal. The Doppler bins are eliminated to 50% of the conventional scheme. Simulation results showed that the average acquisition time can be reduced to 50% under normal GPS signal condition.
Keywords :
Doppler effect; Global Positioning System; signal detection; Doppler bins elimination algorithm; GPS signal acquisition system; Global Positioning System; two-step digital downconversion; Additive white noise; Correlators; Detectors; Frequency conversion; Frequency estimation; Global Positioning System; Hardware; Low pass filters; Signal generators; Signal processing; Doppler bins elimination; acquisition; global positioning system;
Conference_Titel :
Electron Devices and Solid-State Circuits, 2009. EDSSC 2009. IEEE International Conference of
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-4297-3
Electronic_ISBN :
978-1-4244-4298-0
DOI :
10.1109/EDSSC.2009.5394161
