强地杂波背景下的低空飞行目标成像

LOW-ALTITUDE TARGET IMAGING IN STRONG GROUNDCLUTTER

该文中提出了在强地杂波背景下对运动目标的成像方法,在对拉伸(stretch)信号的处理时,采用了前后两次回波使用同一拉伸延时量进行处理的方法,然后使用一次相消器滤除杂波,利用测距用的常载频信号完成精确运动参数的估计并完成运动补偿,经过理论分析和仿真实验验证了该方法的有效性。

The imaging method on low-altitude target in strong ground clutter is presented. The identical amount of stretching time-delay with the adjoined echoes is applied in the signal stretching process, and then the ground clutter is filtered through the one-order canceller. Furthermore the target's motion parameters can be accurately estimated by the narrow pulse signals on the constant carrier, so the motion compensation can be achieved. After the theoretical analysis, the validity is proven by simulation results finally.