【摘要】 针对民航陆基导航设备在多个频段受到干扰的问题，开展多频段干扰信号的测向定位研究，在实验室课题组原有的GNSS干扰测向系统的基础上，扩展其可测频段，设计并实现了一种基于双天线切换阵列的陆基导航波段干扰源测向定位系统.系统采用三对不同间距的双天线阵列，能够根据工作频段快速切换阵列以实现跨频段的干扰测向.为保障系统的测向精度与稳定性，提出并实现了一种基于自校准的双通道相位一致性补偿算法，显著降低了硬件非理想特性带来的测向误差.在开阔实验场地中，设置干扰源发射多个陆基导航频段内的不同类型干扰信号，经过实验测试，本系统具备可靠的定位能力和良好的稳定性，对构建更健壮的民航导航抗干扰体系具有重要意义.更多还原

【Abstract】 To address the issue of civil aviation ground-based navigation equipment being interfered with in multiple frequency bands, this study conducts research on direction finding and positioning of multi-band interference signals. Based on the existing GNSS interference direction finding system developed by the laboratory research group, the measurable frequency bands are expanded, and a ground-based navigation band interference source direction finding and positioning system based on a dual-antenna switching array is designed and implemented. The system adopts three pairs of dual-antenna arrays with different spacings,which can quickly switch arrays according to the working frequency band to achieve cross-band interference direction finding. To ensure the direction finding accuracy and stability of the system, a dual-channel phase consistencycompensation algorithm based on self-calibration is proposed and implemented, which significantly reduces the direction finding errors caused by non-ideal hardware characteristics.Inan open experimental site, interference sources are set to transmit different types of interference signals within multiple ground-based navigation frequency bands. Experimental tests show that the system has reliable positioning capability and good stability, which is of great significance for building a more robust civil aviation navigation anti-interference system.更多还原