弹道目标在高速运动情况下,会导致雷达回波一维距离像主瓣展宽和频谱峰值偏移,影响后续的真假弹头识别。文中首先分析了在高速运动下弹头进动的微多普勒特征,得出导致弹头进动微多普勒特征一维距离像展宽和频谱峰值偏移的相位误差,为获得理想的弹道目标微多普勒特征信息,提出应用多项相位变换的方法对脉内调制引起的相位误差进行补偿,最后的仿真实验验证了理论分析结果及所提方法的有效性。

The movement of ballistic missile with high speed will induce the main lobe widening and deviation of the range profile and influence the following distinguishing. Firstly, the m-D features of ballistic missile based on precession with high speed was analyzed, and the error induced by the missile's high speed was derived. In order to obtain the perfect information of the m-D features, the polynomial phase transform was proposed to compensate the error. Finally, some results were given for validating the theoretical derivation and the effectiveness of the proposed method.