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针对平面波雷达回波信号的特点,利用非线性均匀阵列通道间的相位关系,以及不同目标的回波信息,联立解方程以求解阵列通道的幅相误差.利用回波信息各通道中的单个到达角目标谱点信息与参考通道对应的单个到达角目标谱点信息相除,即可得到通道的相对幅度误差,而其相位差是与该通道的相对相位误差无关的量,这样就可以得出对应的单个到达角,之后反代就可以得到该通道的相对相位误差.该方法极大减少了计算量,便于应用到实时跟踪系统.同时该方程组充分利用了各通道丰富的信息,具有一定的抗噪能力.实验结果证明,在低信噪比、短数据情况下,该方法具有可行性和工程实用性.
Aiming at the characteristics of the plane wave radar echo signal, the phase relationship between the channels of the uniform uniform array and the echo information of different targets are used to solve the amplitude and phase error of the array channel by using the echo information. The angle of arrival target spectral point information and the reference channel corresponding to the single angle of arrival of the target spectrum point information is divided, you can get the channel relative amplitude error, and the phase difference is relative to the channel relative phase error unrelated to the amount of The corresponding single angle of arrival is obtained, and then the relative phase error of the channel can be obtained after inverse generation. This method greatly reduces the computational complexity and is easy to apply to the real-time tracking system. At the same time, the system makes full use of the rich information of each channel, A certain degree of anti-noise ability.The experimental results show that this method is feasible and practical in the case of low signal-to-noise ratio and short data.