Acquisition of GPS Software Receiver Using Split-Radix FFT

Acquisition is the first step in the signal processing section of a Global Position System (GPS) receiver. It detects the presence of a GPS signal received by antenna and provides estimates of code phase and Doppler frequency to the tracking loops. Three acquisition methods in frequency-domain proce...

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Hauptverfasser:	Lin, W.H., Mao, W.L., Tsao, H.W., Chang, F.R., Huang, W.H.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Frequency estimation Global Positioning System Phase detection Phase estimation Phase frequency detector Receiving antennas Signal processing Signal processing algorithms Software architecture Tracking loops
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creator	Lin, W.H. Mao, W.L. Tsao, H.W. Chang, F.R. Huang, W.H.
description	Acquisition is the first step in the signal processing section of a Global Position System (GPS) receiver. It detects the presence of a GPS signal received by antenna and provides estimates of code phase and Doppler frequency to the tracking loops. Three acquisition methods in frequency-domain processing are compared, i.e., namely radix-2 FFT, split-radix-2/4 FFT and. The expectancy of the split-radix algorithm is increasing the acquisition efficiency. It is shown that the split-radix-2/8 FFT can save 25% of data loads and stores compared with split-radix-2/4 FFT. In order to simulate the overall system in an efficient way, the acquisition functions are developed in software architecture running on PC.
doi_str_mv	10.1109/ICSMC.2006.384873
format	Conference Proceeding
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subjects	Frequency estimation Global Positioning System Phase detection Phase estimation Phase frequency detector Receiving antennas Signal processing Signal processing algorithms Software architecture Tracking loops
title	Acquisition of GPS Software Receiver Using Split-Radix FFT
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