旋转基线相位干涉仪测向精度提高方法

旋转基线相位干涉仪测向法利用阵元间相位差最大值与最小值进行来波角度估计，存在噪声干扰时会产生较大测向误差。针对这一问题，采用三参数最小二乘法对解模糊后的相位差曲线进行幅度、初相和偏移量的估计，进而对相位差曲线进行拟合处理。该方法提高了旋转基线相位干涉仪测向的精度，仿真结果证明了该方法的有效性。

A method for improving direction finding accuracy of rotary baseline phase interferometer

The direction finding(DF) method of rotary baseline phase interferometer uses the maximum and minimum values of phase difference between array elements to estimate the angle of arrival,and there exists large DF error in the presence of noise.For this problem,the amplitude,initial phase and offset of the phase difference curve after deblurring are estimated by numerical least squares,and then the phase curve is matched.The method improves the accuracy of direction finding by rotary baseline phase interferometer.The simulation result proves the rationality and validity of the proposed method.