Impact of GPS Almanac Broadcast Strategy on the Signal Acquisition Time  

作　　者：Lu-Xiao Wang Zhi-Gang Huang Yun Zhao 

机构地区：[1]School of Electronic and Information Engineering,Beihang University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2013年第5期6-13,共8页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Basic Research Program of China(Grant No.2010CB731800);the National Natural Science Foundation of China(GrantNo.60879012/F01)

摘　　要：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.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.

关 键 词：ALMANAC signal acquisition time age of data code phase doppler frequency 

分 类 号：TN967.1[电子电信—信号与信息处理]