双天线对消技术对宽带干扰的抑制性能  

Suppression of Wideband Interference Through the Cancellation Technology of Dual Antennas

作　　者：刘胤廷 李秀萍[1] 高攸纲[1] LIU Yin-ting LI Xiu-ping GAO You-gang(School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《北京邮电大学学报》2017年第3期72-75,共4页Journal of Beijing University of Posts and Telecommunications

摘　　要：提出了一种应用在卫星导航系统中的干扰对消技术.通过理论推导,详细分析了干扰对消系统对宽带干扰抑制能力的极限值,揭示了带宽延时积与干扰对消比的内在关系,量化了幅度误差和相位误差对宽带干扰对消比的恶化程度.通过仿真和实验验证了理论分析的正确性.实验验证了双天线对消系统可使卫星导航接收机的抗干扰能力提高29 d B.The application of the interference cancellation technology in satellite navigation system was presented. The limit value of the suppression ability of the interference cancellation system was analyzed. The interrelation between the bandwidth-delay product and the interference cancellation ratio was dis- closed. The deterioration degree in the wideband interference cancellation ratio due to the amplitude error and phase error was quantified. Analysis was verified through simulation and experiment. It is verified that the dual antenna cancellation system can improve the interference suppression of the satellite naviga- tion receiver by 29 dB.

关 键 词：宽带干扰对消 干扰对消比 带宽延时积 

分 类 号：TN975[电子电信—信号与信息处理]