摘要
常规快速跳频系统由于采用FSK体制,利用频率和时间分集的优势,相比于慢速跳频系统具备更强的抗干扰能力。但是,随着干扰方跟踪能力的不断提高,快跳频系统受跟踪干扰的影响也越来越大。文章对快跳频系统受跟踪干扰的影响进行了分析仿真,同时分析干扰“置零”作为一种抗跟踪干扰的措施,“置零”的比例与FSK信号体制之间的关系,并在不同条件下仿真了干扰“置零”措施对系统性能的影响。仿真得到的结论可以为实际工程中快跳频系统接收端有效对抗跟踪干扰提供指导意义。
The frequency-shift-keying was employed for fast frequency hopping system,it makes use of the advantages of frequency and timing diversity and has stronger anti-jamming ability compared with the slow frequency hopping system.However,with the improvement of tracking capability of the jammer,the fast frequency hopping system is increasingly affected by follower jamming.In this paper,the effect of follower jamming on fast frequency hopping system is analyzed and simulated.As an anti-follower jamming measure,the jamming nulling ratio is analyzed with the FSK system.And the influence of jamming nulling on system performance is simulated under different conditions.The simulation results can provide guidance for the fast frequency hopping system receiver in practical engineering.
作者
许鹏飞
刘攀
樊宁波
XU Pengfei;LIU Pan;FAN Ningbo(China Academy of Space Technology(Xi’an),Xi’an 710000,China)
出处
《空间电子技术》
2019年第6期49-53,67,共6页
Space Electronic Technology
关键词
快跳频
跟踪干扰
干扰置零
Fast frequency hopping
Follower jamming
Jamming nulling
