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宽带线性调频信号在宽带相控阵雷达宽角扫描应用时,由于天线孔径渡越时间的影响会出现目标距离像的散焦,一种有效的方法是采用少数几个带宽较窄的线性调频信号合成带宽,以满足系统大瞬时带宽的需要。本文先提出了利用少数几个线性调频信号Stretch处理后的信号合成带宽的原理,并针对目标高速运动情况的合成带宽处理方法进行了分析,提出了联合估计目标速度与子脉冲合成带宽的方法。计算机仿真实验表明本文对少数线性调频信号Stretch处理后回波合成带宽是有效的。
Broadband chirp signal in broadband phased array radar wide angle scanning applications, due to the antenna aperture transit time will appear defocus of the target distance image, an effective method is to use a few narrow bandwidth chirp signal Synthesis of bandwidth, in order to meet the needs of the system instantaneous bandwidth. In this paper, the principle of signal synthesis using a few of the chirp signal Stretch is proposed. The method of synthetic bandwidth processing for the target high-speed motion is analyzed. A method of joint estimation of target velocity and sub-pulse synthesis bandwidth is proposed. Computer simulation results show that the proposed method is effective to the echo synthesis bandwidth of a few chirp signals Stretch processing.