Correlation of PN Spread Spectrum Signal Under First-Order Dynamics
LI Chun-xia1,2, WANG Fei-xue1, GUO Gui-rong1
1. Satellite Navigation R&D Center,School of Electronic Science and Engineering,National University of Defense Technology, Changsha,Hunan 410073,China;2. Beijing Global Information Application and Development Center,Beijing 100094,China
Abstract：In direct sequence spread spectrum systems,due to dynamic factors such as the relative motion between the transmitter and the receiver and the instability of clock,there is code-frequency offset between the received and the local PN codes.In this paper,assuming first-order dynamic,namely,constant code-frequency offset,the formulas for the correlation function of PN code are derived for the first time by the method of integrating the normal PN code correlation function with an integration time interval of arbitrary length and then verified by simulation.Accordingly the characteristics of PN code correlation function under first-order dynamic are studied,including spread of main-lobe,shift and loss of peak.The conclusions drawn in this paper can guide the design of code synchronization in high dynamic receiver.
李春霞;王飞雪;郭桂蓉. 一阶动态条件下伪随机码信号相关函数研究[J]. 电子学报, 2007, 35(9): 1789-1793.
LI Chun-xia;WANG Fei-xue;GUO Gui-rong. Correlation of PN Spread Spectrum Signal Under First-Order Dynamics. Chinese Journal of Electronics, 2007, 35(9): 1789-1793.
2007, Vol. 35 
