| 基于频分相分联合的正交复用技术研究 |
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| 引用本文： | 曹继尧,唐小妹,胡旖旎,倪少杰,王飞雪.基于频分相分联合的正交复用技术研究[J].全球定位系统,2018,43(5):34-37. |
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| 作者姓名： | 曹继尧 唐小妹 胡旖旎 倪少杰 王飞雪 |
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| 作者单位： | 1.国防科技大学 电子科学学院,湖南 长沙 410073 |
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| 摘 要： | 随着导航系统的增多,导航频段越来越拥挤,不同导航系统和不同卫星之间的干扰愈发严重. 二进制偏移载波调制方式是通过设计分裂功率谱来减少频谱混叠,以削弱互相关干扰的影响,但其没有考虑子载波相位的关系,存在进一步优化的空间.本文通过综合考虑子载波的频率和相位关系,使不同卫星信号间得到近似正交的互相关性能,从而有效削弱卫星信号之间的干扰.
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| 关 键 词： | 兼容 副载波 GNSS信号 正交 OFDM |
Study on Orthogonal Multiplexing Technology Based on Frequency-Division and Phase-Division |
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| Abstract: | With the development of navigation system, the frequency band for navigation is becoming more and more crowded, which accounts for the interference among different navigation systems and navigation satellites becoming severer and severer. In this paper, binary subcarrier is introduced. By designing the frequency and phase of the subcarrier, the satellite signals become almost orthotropic, for which the cross correlation interference can be mitigated affectively. |
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