DocumentCode :
233803
Title :
A study of GPS signal fast acquisition algorithm aided by interia information
Author :
Xu Qinli ; Chen Shuai ; Zhao Peng ; Wu Jiantai
Author_Institution :
Sch. of Autom., Nanjing Univ. of Sci. & Technol., Nanjing, China
fYear :
2014
fDate :
28-30 July 2014
Firstpage :
837
Lastpage :
839
Abstract :
A large doppler frequency shift will be produced under high dynamic environment,and GPS receiver cost longer time to capture satellite signals. That is a great drawback to some high dynamic carrier especially to some high-speed guided weapons. The paper proposed an acquisition algorithm aided by inertia information under high dynamic environment. Here the real-time speed and position of carrier is estimated by the inertial information and the doppler shift is estimated by ephemeris combined with inertial information. The algorithm can decrease range of frequency, reduce the search time and increase the acquisition speed. The semi-physical simulation experiment was performed to test the acquision performance of receiver that work at static state and high dynamic environment and it proves that algorithm can increase the acquisition speed.
Keywords :
Doppler shift; Global Positioning System; radio receivers; signal detection; weapons; Doppler shift; GPS receiver; GPS signal fast acquisition algorithm; high-speed guided weapons; inertia information; interia information; large doppler frequency shift; satellite signals; semiphysical simulation; Digital signal processing; Educational institutions; Frequency estimation; Global Positioning System; Heuristic algorithms; Receivers; Time-frequency analysis; acquisition; ephemeris; high dynamic; inertia information;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2014 33rd Chinese
Conference_Location :
Nanjing
Type :
conf
DOI :
10.1109/ChiCC.2014.6896736
Filename :
6896736
Link To Document :
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