【摘要】 步进频率信号由于存在距离-多普勒耦合现象,目标的径向运动将导致合成的目标径向一维距离像产生距离徙动和波形失真。提出步进频率共轭法测速,可以利用一个步进频率脉冲串实现超大范围的速度无模糊测量,避免了常规方法的速度模糊或模板数过多计算复杂的问题。这种方法可以利用快速傅里叶变换实现,计算量小,降低系统实现的复杂度,是一种实用有效的步进频率雷达测速方法。更多还原

【Abstract】 In stepped frequency radar, the velocity of targets must be estimated and compensated to eliminate the range migration and distortion due to target moving. The conjugation method is proposed for velocity measurement. Both theoretical analysis and computer simulation results show that conjugation method can estimate target’ s velocity efficiently within an enormous range in stepped frequency radar. The method avoids velocity ambiguity and complex computations of other common methods, so it’ s an practical and effective velocity estimation method in stepped frequency radar.更多还原