| 引用本文: | 关刚强,聂俊伟,黄仰博,等.子空间投影后波束形成的导航接收机抗干扰性能分析.[J].国防科技大学学报,2016,38(3):50-54.[点击复制] |
| GUAN Gangqiang,NIE Junwei,HUANG Yangbo,et al.Performance analysis of anti-jamming algorithm in GNSS receiver utilizing subspace projection and beamforming[J].Journal of National University of Defense Technology,2016,38(3):50-54[点击复制] |
|
| |
|
|
| 本文已被：浏览 7927次 下载 6228次 |
| 子空间投影后波束形成的导航接收机抗干扰性能分析 |
| 关刚强, 聂俊伟, 黄仰博, 王飞雪 |
|
(国防科技大学 电子科学与工程学院， 湖南 长沙 410073)
|
| 摘要: |
| 利用导航信号淹没于干扰信号和热噪声的特点，将天线阵列接收的空时信号矢量向干扰子空间的正交子空间投影以实现干扰抑制。当接收机对投影后的单阵元数据捕获成功后，利用捕获估计的本地扩频码相位作为参考信号，依据最小均方误差准则进行波束形成。仿真结果表明该抗干扰算法在零陷强干扰的同时使主波束指向导航信号来波方向，有效提高了阵列输出信干噪比，并降低了空时自适应处理对导航信号伪码相关峰形状和载波跟踪性能的影响。 |
| 关键词: 抗干扰 子空间投影 波束形成 导航接收机 |
| DOI：10.11887/j.cn.201603009 |
| 投稿日期：2015-03-06 |
| 基金项目:教育部新世纪人才支持计划资助项目（NCET-08-0144） |
|
| Performance analysis of anti-jamming algorithm in GNSS receiver utilizing subspace projection and beamforming |
| GUAN Gangqiang, NIE Junwei, HUANG Yangbo, WANG Feixue |
|
(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China)
|
| Abstract: |
| Considering that the global navigation satellite system signal is buried in the strong interference and thermal noise, a novel anti-jamming scheme which utilizes subspace projection and beamforming method was proposed. The data vector received by antenna array was projected onto the noise subspace which is orthogonal to interference subspace to achieve interference suppression. When the local code was synchronized with the reference antenna jammer-free data, beamforming was performed according to the minimum mean square error criterion. Simulation results show that the proposed method can steer the main beam to the direction of global navigation satellite system signal wave with effective interference suppression, and the output signal-to-noise ratio can be significantly increased while the correlation peak curve and the carrier tracking performance are not corrupted. |
| Keywords: anti-jamming subspace projection beamforming global navigation satellite system receiver |
|
|
