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Rapid Doppler Frequency Offset Acquisition and Tracking Algorithm of Satellite Communication


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Rapid Doppler Frequency Offset Acquisition and Tracking Algorithm of Satellite Communication
LIU Jian-feng12DONG Jin-chun2SHEN Lian-feng1ZHUANG Zhi-hong3
1.Department of Radio Engineering,Southeast University,Nanjing 210096,China;2.Postdoctoral Workstation,Panda Electrical Group Ltd.,Nanjing 210002,China;3.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
signal receivers communication satellites Doppler effect frequency shift autoregressive models Kalman filters
In order to reduce the channel error rate of Ka-band mobile satellite communication system,the paper deduces a method of rapid Doppler frequency offset acquisition on the basis of π/4-DQPSK modulation.In the tracking phase,an autoregressive model is used to establish the mode of colored noise,and the Kalman algorithm is used to filter it.The simulation results show that the mean-square value between the estimated value and practical value becomes smaller along with the time and the parameters of the noise mode reaching high precision in a short time.In the Doppler frequency offset tracking,the estimated value converges to the theoretical value along with tracking time.The Doppler frequency offset tracking algorithm put forward here is feasible and the Kalman algorithm ensures the estimated value converges reliably in the period of the tracking phase.


[ 1] 张更新, 张杭. 卫星移动通信系统[M ]. 北京: 人民邮电出版社, 2001.
[ 2] G leason S, H odgart S, Sun Y ip ing, et a.l Detection and processing of bistatica lly re flected GPS signa ls from low earth orb it for the purpose o f ocean rem ote sensing[ J]. IEEE Trans on Geosciences and Rem ote Sensing, 2005, 43( 6): 1229- 1241.
[ 3] 赵杭生, 甘仲民, 屈德新. P /4-DQPSK 调制的快速位同步捕获和位同步跟踪[ J]. 电子学报, 1999, 27 ( 4): 24- 27.
[ 4] Baykut S, Akgul T, E rg intav S. GPS data m ode ling and GPS no ise analysis[ J]. 14th IEEE S igna l Processing and Communications Applications, 2006 ( 3): 1- 4.
[ 5] Le i J, Ng T S. A non-da ta-a ided and non-phase-based AFC m ethod forM PSK DS /CDMA transce ivers used in dig ital broadcasting[ J]. IEEE Trans on Broadcasting, 2003, 49( 4) : 335- 343.
[ 6] 朱爱民, 杨喜根, 单超. 一种基于AR模型的大频偏估计算法[ J]. 系统仿真学报, 2006, 18 ( 1 ): 37 - 40.
[ 7] Zhao L inha,i Xu Xun, Ji Na. A fast dem odulating me thod for frequency sh ift signal based on frac tal box dim ensions theory [ J]. Inte rnational Symposium on M icrow ave, Antenna, Propag ation and EMC Techno log ies fo r W ire less Comm un ications, 2007, 3: 1027 - 1030.
[ 8] M cGu ire M, S im a M. Low-order Ka lm an filters for channel estim ation[ J]. IEEE Pacific R im Conference on Comm un ica tions, Compu ters and Signa l Processing, 2005( 8): 352- 355.
[ 9] X iong Shenshu, Zhou Zhaoy ing. Neura l filter ing o f co lo red no ise based on Ka lm an filter structure [ J]. IEEE Trans on Instrum en tation and M easurem ent, 2003, 52( 3): 742- 747.


Last Update: 2012-11-19