摘要
由多个单元天线组成的GNSS调零天线阵通常用于在大功率干扰信号来波方向上形成天线波束方向图零点,以此来抗压制性干扰。采用此调零天线阵所自然形成的二维短基线,按照电子侦察中多基线干涉仪测向原理,通过短基线的相位差测量值来解GNSS姿态仪长基线的相位差模糊,从而实现了GNSS姿态仪的整周模糊度的实时解算。该方法通过GNSS姿态仪与调零天线阵的组合应用,不仅提高了解模糊的性能,而且增强了整个系统抗干扰反欺骗的能力,从而为GNSS姿态仪和调零天线的拓展应用提供了重要参考。
The GNSS nulling antenna array with multiple antenna cells is usually used to form the beam null in the direction of jamming with large power. This is an effective anti-jamming method. Here the 2D short baselines in a hulling antenna array are utilized. According to direction finding principle of multi-baselines interferometer in electronic reconnaissance, the measurement result of short baseline is naturally used to solve the phase difference ambiguity of long baseline for GNSS attitude instrument. In this way the integer cycle ambiguity from GNSS attitude instrument is removed in real time. In this method GNSS attitude instrument is combined with nulling antenna array. It enhanced not only the speed for ambiguity removing, but also the anti-jamming and anti-deception ability of the whole system. It is an important reference for the application development of GNSS attitude instrument and nulling antenna array.
出处
《全球定位系统》
CSCD
2017年第6期55-60,共6页
Gnss World of China
关键词
全球卫星导航系统
姿态仪
姿态测量
来波方向测量
干涉仪测向
调零天线
整周模糊度
多基线解模糊
global navigation satellite system
attitude instrument
attitude measure
direction finding of arrival
direction finding by interferometer
nulling antenna
integer cycle ambiguity
solving ambiguity by multi baselines
