摘要
Galileo E1民用信号采用新的BOC(1,1)扩频调制方式。针对E1信号进行信号建模,并对其信号特征进行了详细研究,最后设计了Galileo软件解调器中的信号处理模块。通过仿真验证表明,软件解调器成功实现了对Galileo E1信号的捕获、跟踪、解扩、解调全过程处理,克服了BOC解调的错锁问题。
Galileo E1 civil signal with a new BOC（ 1,1 ） modulation is based on direct sequence spread spectrum（DSSS） technique. Researches on the signal model of E1 signal are given, and the signal characteristics are well studied. Finally, a signal processing structure for Galileo soft-demodulation is designed. Experimental results and analysis are given to demonstrate that the presented Galileo soft-demodulator can perform signal acquisition, tracking, despreading, and I/Q demodulation successfully, without running into problem of false lock.
出处
《电子信息对抗技术》
2009年第1期38-42,共5页
Electronic Information Warfare Technology
