阵列天线抑制欺骗式导航干扰信号方法研究

针对欺骗式干扰影响飞行器卫星导航信号后引起的定位测姿错误问题，提出了一种适用于飞行器导航的基于阵列天线的欺骗式干扰检测和消除方法.使用接收阵列天线的载波相位双差测量值作为干扰检测依据，通过载波相位单差测量方程求出干扰信号的方向矢量，给出了提高干扰方向测量精度的方法，并使用其正交向量在干扰方向形成零陷，同时通过调整波束指向，在待测信号方向形成阵列增益，以达到抗干扰和增强导航信号的目的.使用这种方法可以对导航信号中的欺骗式干扰信号进行有效的识别和消除，适用于复杂环境下的飞行器导航.

Research on Spoofing Suppressing Method Using Antenna Array for Navigation Signal

In order to solve the problem of positioning errors caused by spoofing to the satellite navigation signals,a spoofing detection and elimination method based on antenna array is proposed.The carrier phase double difference measurement value of the receiving antenna array is used as the basis for interference detection.The direction vector of the spoofing is obtained by the single difference measurement value of the carrier phase.A method for improving the precision of the spoofing's direction is proposed too.The orthogonal vector is used to form a nulling in the direction of spoofing.By adjusting the beam direction,the array gain is formed in the direction of the signal to be measured,so as to achieve the purpose of resisting interference and enhancing the navigation signal at the same time.Using this method can effectively identify and eliminate the spoofing in the navigation signal,which is suitable for aircraft navigation in complex environment.