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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Lu-Xiao Wang,Zhi-Gang Huang,Yun Zhao.Impact of GPS Almanac Broadcast Strategy on the Signal Acquisition Time[J].Journal of Harbin Institute Of Technology(New Series),2013,20(5):6-13.DOI:10.11916/j.issn.1005-9113.2013.05.002.
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Impact of GPS Almanac Broadcast Strategy on the Signal Acquisition Time
Author NameAffiliation
Lu-Xiao Wang School of Electronic and Information Engineering, Beihang University, Beijing 100191, China 
Zhi-Gang Huang School of Electronic and Information Engineering, Beihang University, Beijing 100191, China 
Yun Zhao School of Electronic and Information Engineering, Beihang University, Beijing 100191, China 
Abstract:
This paper investigates the problem of almanac affecting the signal acquisition time with two constraints: different age of data and multi-sets of almanac. The contributions made in this paper include: 1) the exploiting of signal acquisition concept to extend well-known almanac function of predicting visible satellite and initializing signal acquisition to minimizing the signal acquisition time;2) a model based on code phase and Doppler frequency to reflect the impact of multi-sets of almanac on the signal acquisition time; 3) the evaluation of the existing GPS almanac with different broadcast strategy. The theoretical analyses and simulations conducted on three sets of almanac show that the model proposed in this paper is general and efficient for almanac design and application.
Key words:  almanac  signal acquisition time  age of data  code phase  doppler frequency
DOI：10.11916/j.issn.1005-9113.2013.05.002
Clc Number:TN967.1
Fund:

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