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Linear filtering approaches for phase calibration of airborne arrays

机译:机载阵列相位校准的线性滤波方法

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Phase calibration of a large fluctuating millimeter-wave airborne antenna array is considered. The technique exploits properties of the correlation of the measured voltages arising from clutter returns at adjacent or nearby element pairs. The proposed calibration algorithm trades smoothing of the observations to reduce random errors with the ability to track the time-varying calibration phase. Algorithm performance is considered for an arbitrary linear filter, which generalizes previous work on analogous pulse-pair problems, and the results are used to choose optimal filter parameters. Numerical results are provided for a field experiment employing a 32-element Ku-band antenna array
机译:考虑了较大的波动毫米波机载天线阵列的相位校准。该技术利用了由相邻或附近的元件对处的杂波返回引起的测量电压的相关特性。提出的校准算法对观测值进行平滑处理,以减少随机误差,并具有跟踪随时间变化的校准阶段的能力。考虑使用任意线性滤波器的算法性能,该算法可概括先前在类似脉冲对问题上的工作,然后将结果用于选择最佳滤波器参数。为使用32元素Ku波段天线阵列进行的现场实验提供了数值结果

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