| 干扰对BDS信号频域及调制域的影响评估 |
| |
| 引用本文： | 刘瑞华,梁欣萌.干扰对BDS信号频域及调制域的影响评估[J].全球定位系统,2019,44(6):7-13. |
| |
| 作者姓名： | 刘瑞华 梁欣萌 |
| |
| 作者单位： | 中国民航大学 电子信息与自动化学院,天津 300300) |
| |
| 摘 要： | 北斗卫星导航系统（BDS）极易受到空中或地面干扰的影响,信号质量因此发生改变,导航性能大大降低.评估干扰对BDS信号质量的影响,可以为干扰监测技术奠定基础.借助矢量信号源发出不同类型的干扰信号,通过时频分析设备获取其信号特性,并将干扰叠加到由高增益天线接收到的实际BDS信号中,对叠加数据进行离线处理,从频域及调制域两方面分析信号质量.结果表明:空间环境的干扰恶化了BDS信号,不同类型的干扰对信号质量影响程度不同,功率谱及星座图处理结果可作为分析干扰环境中BDS信号质量的基本依据.
|
| 关 键 词： | BDS信号 干扰 频谱 功率谱 星座图 |
Impact of interference on the frequency domain and modulation domain of BDS signal |
| |
| Affiliation: | College of Electronic Information and Automation, Civil Aviation University of China,Tianjin 300300, China |
| |
| Abstract: | BeiDou navigation Satellite system (BDS) is highly susceptible to interference from air or ground, which may cause signal quality changing and navigation performance redacing. Evaluating the impact of interference on BDS navigation signal quality can lay the foundation for interference monitoring technology. Different types of signals as interference are generated by vector signal source. and superimposed on BDS navigation signal received by high-gain antenna, the aliased data is processed offline, and the signal quality is analyzed from frequency domain and the modulation domain. Results show that interference may deteriorate BDS navigation signal, and the influence of different types of interference on the signal quality is different. Power spectrum and constellation processing results can be used to analyze the quality of BDS signal in interference environment. |
| |
| Keywords: | |
|
| 点击此处可从《全球定位系统》浏览原始摘要信息 |
|
点击此处可从《全球定位系统》下载全文 |
|
