基于数字多波束的导航卫星信号接收机抗干扰仿真  

Analysis of Anti-Jamming Simulation in Navigation Satellite Signal Receiver Based on Digital Multi-Beam

作　　者：彭梓洋 PENG Ziyang(School of Astronautics Northwestern Polytechnical University,Xi´an 710129,China)

机构地区：[1]西北工业大学航天学院,陕西西安710129

出　　处：《河南科技》2023年第20期30-35,共6页Henan Science and Technology

摘　　要：【目的】合理使用惯导辅助数字多波束技术,在提高信号接收、减少干扰的同时,达到对径目的,能满足传统宽带多星波束对信号入射方向的苛刻要求。【方法】通过将数字波束形成技术应用于导航卫星信号接收机中,以惯导为基础来提供当地水平坐标系下的航向、俯仰角和横滚角,并以此为基础计算出导航卫星的入射方向,形成指向卫星的主波束及对准干扰的“零陷”,确定单约束的导向矢量,从而推导出空时自适应处理结构的数字多波束算法。【结果】数字多波束抗干扰接收机的应用能有效改善数字宽带多星多波束环境中存在的干扰现象。【结论】仿真试验表明,将本研究提出的数字多波束抗干扰接收机实现方法用于对捕获过程算法的改进,可实现对多波束数据的合理应用,性能仿真试验证明了该算法的有效性。[Purposes]The rational use of inertial navigation assisted digital multi-beam technology can improve signal reception,reduce interference,and achieve the purpose of path alignment,which can meet the strict requirements of traditional broadband multi-star beam on the direction of signal incidence.[Methods]By applying digital beamforming technology to the navigation satellite signal receiver,the heading,pitch and roll angles in the local horizontal coordinate system are provided based on the inertial navigation system.Based on this,the incident direction of the navigation satellite is calculated,and the main beam pointing to the satellite and the´null´of the alignment interference are formed.The single-constrained steering vector is determined,and the digital multi-beam algorithm of the space-time adaptive processing structure is derived.[Findings]The application of digital multi-beam anti-jamming receiver can effectively improve the interference phenomenon in digital broadband multi-satellite multi beam environment.[Conclusions]The simulation results show that the digital multi-beam anti-jamming receiver implementation method proposed in this study is applied to the improvement of the acquisition process algorithm,which can realize the reasonable application of multi-beam data.The performance simulation test proves the effectiveness of the algorithm.

关 键 词：抗干扰 空时自适应 多波束 信号捕获 

分 类 号：TN911.7[电子电信—通信与信息系统]