结合天线互耦分析的同车电台射频干扰对消  

RF interference cancellation based on antennas coupling analysis for radios on the co-vehicle

作　　者：刘建成[1] 赵宏志[2] 全厚德[1] 崔佩璋[1] 唐友喜[2] 孙慧贤[1] 

机构地区：[1]军械工程学院信息工程系,河北石家庄050003 [2]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731

出　　处：《系统工程与电子技术》2015年第11期2598-2605,共8页Systems Engineering and Electronics

基　　金：国家高技术研究发展计划(863计划)(2014AA01A704;2014AA01A706;2015AA01A701);国家自然科学基金(61531009;61271164;61471108;61201266;61501093);国家科技重大专项(2014ZX03003001-002)资助课题

摘　　要：伴随战场指挥通信系统的复杂化,车载多部军用超短波(very high frequency,VHF)电台间互扰问题日益突出。针对同车电台间互扰问题,提出了结合天线近场耦合计算的射频干扰自适应对消方法,在此基础上推导出了耦合计算误差影响系统收敛时间的解析表达式。该方法通过预先建立同车收发天线近场模型,计算得出收发天线间耦合系数和相位失真度,再利用该结果设定自适应干扰对消链路的初始参数,缩短了射频自适应干扰对消算法的收敛时间。仿真表明,所提方法在不降低对消比情况下,与现有的自适应对消方法相比收敛时间缩短了30%以上,同时也验证了计算误差影响收敛时间解析表达式的正确性。The interference between military very high frequency （VHF） radios in the same vehicle is pro- ducing more trouble with the increasing complication of the tactical command and control system. A radio fre- quency （RF） interference cancellation method based on exploring the mutual near-field coupling between anten- nas, is proposed to cancel the mutual interference of radios on the co-vehicle. In addition, an analytical expres- sion is derived to reflect the relationship between coupling calculation error and convergence time of the system. This method builds the near-field analysis model between transmitting and receiving antennas over one vehicle in advance, meanwhile, the mutual coupling and phase distortion are deduced. Then the calculation result is uti- lized to set the original parameters of the adaptive interference canceling chain, and efficiently cancel the RF in- terference. Finally, the simulations verify that the system convergence time is 30G tess than that of the existing adaptive cancellation method, and prove the validity of the analytical expression reflecting how the coupling cal culation error impairs system convergence time.

关 键 词：电台互扰 近场耦合 自适应干扰对消 收敛时间 

分 类 号：TN911[电子电信—通信与信息系统]