调频步进波形的ISAR回波建模和成像

研究调频步进波形逆合成孔径雷达（ＩＳＡＲ）回波建模和成像的方法，在剖析调频步进雷达信号的数字信号处理方法基础上，建立连续运动目标多散射点的回波模型，提出了用调频步进雷达信号实现连续运动目标的逆合成孔径成像的方法和信号处理方案。通过多个散射点组砀目标的记真，得到不同程度下的目标像，仿真结果证明调频步进波形实现ＩＳＡＲ成像是可行的。

The Method of ISAR Imaging and Echo Modeling Based on Modulated Step Frequency Waveform

The method of ISAR imaging and echo modeling based on modulated step frequency waveform was studied. After the key problem of modulated step frequency signal processing was anatomized, the continuously moving multi point target modeling was given, and furthermore, a new ISAR imaging method of modulated step frequency waveform was put forward. The simulation results of target imaging under different speeds were obtained from a multi point target echo modeling, which proved the validity of ISAR imaging of this waveform.