| 带限QMBOC信号的加权匹配接收技术 |
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| 引用本文： | 刘亮,马忠强.带限QMBOC信号的加权匹配接收技术[J].无线电工程,2019(2):139-144. |
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| 作者姓名： | 刘亮 马忠强 |
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| 作者单位： | 1.卫星导航系统与装备技术国家重点实验室;2.河北科技大学信息科学与工程学院 |
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| 基金项目： | 科技部"十三五"国家重点研发计划基金资助项目(2016YFB0502402) |
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| 摘 要： | 随着全球卫星导航系统(GNSS)的逐渐完善,新体制信号也得到了一定的发展。为了打破国外专利技术对我国的封锁,科研人员提出了正交复用二进制偏移载波(QMBOC)这种调制方式。在高阶BOC情况下以及带宽受限时,QMBOC存在信号分量能量损失的现象,并在相关峰平台处产生非单调性和较大的不对称性,容易造成跟踪环路的失锁。通过对QMBOC带限信号的研究,同时分析了能量损失的原因,并提出了利用带限信号功率加权匹配的方法重新生成本地码。仿真结果表明,利用该方法可以获得更大的相关输出,并改善了平台处的不对称性和单调性,为未来导航接收机的QMBOC信号解调算法设计提供了参考。
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| 关 键 词： | 正交复用二进制偏移载波 带限 加权匹配 |
Weighted Matching Receiving Technology of Bandwidth-limited QMBOC Signal |
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| LIU Liang,MA Zhongqiang.Weighted Matching Receiving Technology of Bandwidth-limited QMBOC Signal[J].Radio Engineering of China,2019(2):139-144. |
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| Authors: | LIU Liang MA Zhongqiang |
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| Affiliation: | (State Key Laboratory of Satellite Navigation System and Equipment Technology,Shijiazhuang 050081,China;Information Science and Engineering Academy,Hebei University of Science and Technology,Shijiazhuang 050018,China) |
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| Abstract: | With the gradual improvement of the global satellite navigation system,the new system signal has been developed.In order to break the blockade of foreign patent technology,the modulation method of QMBOC is proposed.But in the case of higher-order BOC and limited bandwidth,this modulation method has such phenomena as signal component energy loss,non-monotonicity and higher asymmetry at correlation peak platform which may cause the loss of tracking loop lock.Based on studying the bandwidth-limited QMBOC signal and analyzing the cause of energy loss,this paper puts forward a method to generate the local codes by using the weighted matching method.The simulation results show that this method can be used to obtain more relevant output,improve the asymmetry and monotonicity of the platform,and provide references for the future navigation receiver QMBOC design. |
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| Keywords: | QMBOC limited bandwidth weighted matching |
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