大容量散射通信抗干扰关键技术综述  

Overview on Anti-jamming Techniques in the Large-capacity Scatter Communication System

作　　者：谢泽东[1] 陈西宏[1] 肖军[1] 刘永进[1] XIE Zedong;CHEN Xihong;XIAO Jun;LIU Yongjin(Air and Missile Defense College,PLA Air Force Engineering University,Xi＇an 710051,China)

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《无线电通信技术》2018年第5期431-434,共4页Radio Communications Technology

基　　金：国家自然科学基金项目(61671468)

摘　　要：研究具有抗干扰能力的大容量散射通信系统是军事通信亟待解决的问题。针对通信速率提升带来的严重符号间干扰问题,对大容量散射通信的分集合并技术进行了探讨。从散射通信可能面临的侦察和干扰的角度,对复杂战场电磁环境下的抗干扰关键技术进行研究,重点对地面侦察、空中主瓣侦察和干扰、空中旁瓣侦察和干扰的可行性进行了分析,并相应地提出了抗干扰策略。研究表明,采用频域分集合并与均衡联合算法能够解决宽带散射通信系统存在的严重符号间干扰问题;地面侦察和干扰在实战中难以实现;对于升空平台,认知跳频抗干扰技术能够有效抗空中主瓣干扰,自适应调零天线能有效抗空中旁瓣干扰。从理论层面对散射通信面临的大容量和抗干扰两大技术课题进行了初步探索。It is urgent to study the large capacity scatter communication system with anti-jamming capability in military communications.In this paper,aiming at the severe intersymbol interference（ ISI） induced by the increase of transmission rate,this paper discusses the diversity combining techniques of the large-capacity scatter communication systems. The scatter communications may be faced with reconnaissance and jamming. In view of these problems,this paper studies the key techniques of anti-jamming in complex battlefield electromagnetic environment.The feasibility and the corresponding anti-jamming strategies of the reconnaissance and jamming from the main lobe and side lobe are analyzed. The joint algorithm of frequency domain diversity combining and equalization can be used to cope with the severe ISI in wideband communication systems. The ground reconnaissance and jamming is almost impossible in combat.For the blastoff plat,the cognitive frequency hopping anti-jamming technique can effectively resist the main lobe jamming,and the adaptive nulling antennas can also effectively resist the side lobe jamming.From the theoretical level,this paper makes a preliminary study on the two major problems about the large-capacity transmission and anti-jamming communications.

关 键 词：通信与信息系统 大容量散射通信 分集合并技术 抗干扰技术 

分 类 号：TN975[电子电信—信号与信息处理]