The forming mechanism of monopulse tracking angle error voltage is analyzed to find out why beam waveguide antennas can not perform monopulse tracking of moving objects in space.Meanwhile,antenna and feed angle error coordinates are defined.Coordinates conversion formulas for angle error voltage of beam waveguide antennas in tracking of moving objects in space is derived for the first time in China through analysis of angle error voltage characteristics in tracking of moving objects with conventional antennas and beam waveguide antennas.Results of validation through an engineering project of a beam waveguide antenna system indicate that the coordinates conversion model of monopulse tracking angle error fully meets the requirements of beam waveguide antennas to track moving objects in full space with high accuracy.%针对波束波导馈电天线无法对空间移动目标进行单脉冲跟踪的特点,首先分析了单脉冲跟踪角误差电压形成机理,同时定义了天线及馈源角误差坐标系,并通过分析常规天线及波束波导馈电天线跟踪移动目标时角误差电压特性,在国内首次得出了波束波导馈电天线跟踪空间移动目标的角误差电压坐标变换公式,最后,通过某波束波导馈电天线系统工程实践对该变换公式进行验证.结果表明,单脉冲跟踪角误差坐标变换模型完全满足波束波导天线对移动目标进行全空域高精度跟踪的要求.
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