摘要
对BOC调制信号的产生、谱特性、自相关、码跟踪和接收处理方法进行了分析。结果表明,与BPSK信号相比,该信号可以实现频段共用,同时实现频谱分离,具有较强的抗干扰能力;在相同码速率条件下,其相关函数曲线更陡峭,具有更高的码跟踪精度和更好的多径分辨能力;采取有效处理方法可以消除BOC信号相关函数中多峰造成的模糊问题。鉴于BOC信号的优点,建议我国未来卫星导航信号优先选用该信号。
The generation, frequency spectrum and power spectrum density of a binary offset carrier （BOC） modulation signal is introduced. Autocorreetion, code tracking, receiving and processing characteristics of BOC are also analysed. The result shows that compared to BPSK, BOC signal can realize the separation of frequency spectrum and have the better anti-jamming ability at same time. With sharper function curve, BOC signal can get better precision of code tracking and multi-path resolution ability in condition of the same code rate. The ambiguity caused by multi-peak of autocorrection function of the BOC signal can be eliminated when effective processing techniques are taken. BOC modulation signal of future satellite navigation system in China is proposed because of its many advantages.
出处
《中国电子科学研究院学报》
2009年第3期307-312,共6页
Journal of China Academy of Electronics and Information Technology
关键词
BOC调制信号
抗干扰
抗多径
相关函数
捕获
跟踪
卫星导航
binary offset carrier （ BOC ） modulation signal
anti-jamming
anti-multi-path
autocorrection function
acquisition
tracking
satellite navigation
