摘要
自适应调零天线是导航系统抗干扰的主要手段,其抗干扰性能受到多种因素的影响。首先,本文定性分析了自适应调零天线零陷、天线方向图起伏和星座分布等因素对自适应调零导航系统抗干扰性能的影响。然后,利用数学仿真定量分析典型场景下自适应调零导航系统抗干扰性能。最后,设计了对装有自适应调零天线的GPS接收机的外场实验,结合实验时段星座分布、不同入射俯仰角下自适应调零导航接收机载噪比分析接收机抗干扰性能。外场实验验证了理论分析的结果,并得出一些与自适应调零天线零陷、天线方向图和星座分布等因素有关的结论。
Adaptive nulling antenna is the main means of anti-jamming for navigation system,and its anti-jamming performance is affected by many factors.Firstly,the influence of the nulling of adaptive antenna,the fluctuation of antenna pattern and the constellation distribution on the anti-jamming performance of adaptive nulling navigation system is analyzed qualitatively in this paper.Secondly,the anti-jamming performance of adaptive nulling navigation system in typical scenes is analyzed quantitatively by mathematical simulation.Finally,the field experiment of the GPS receiver with adaptive nulling antenna is designed.Combined with the constellation distribution in the experimental period and the carrier-to-noise ratio of adaptive nulling navigation receiver under different incident pitch angles,the anti-jamming performance of the receiver is analyzed.The results of the theoretical analysis are verified by field experiment,and some conclusions related to the factors such as adaptive nulling antenna null,antenna pattern and constellation distribution are obtained.
作者
刘义
张凯
李运宏
麻曰亮
Liu Yi;Zhang Kai;Li Yunhong;Ma Yueliang(Key Laboratory of Optoelectronic Countermeasure Test and Evaluation Technology,Luoyang 471003,China)
出处
《航空兵器》
CSCD
北大核心
2022年第2期113-118,共6页
Aero Weaponry
关键词
卫星导航
自适应
调零天线
抗干扰
零陷
天线方向图
星座分布
satellite navigation
adaptive
nulling antenna
anti jamming
null
antenna pattern
constellation distribution
作者简介
刘义(1977-),男,黑龙江齐齐哈尔人,博士,高级工程师;通信作者:张凯(1988-),男,河南洛阳人,博士,工程师。
