【摘要】 在分析机载合成孔径雷达运动目标成象特点的基础上，探讨了一种动目标成象的前置滤波方法，指出其存在的问题，提出了在前置滤波后进行参数估计的后处理形式．该方法基于时间一频率联合分析法，能得到运动目标的精细成象结果，计算机模拟验证了方法的有效性．更多还原

【Abstract】 Considering the effects of slowly moving targets which appear in the output of a synthetic aperture imaging radar,an approach using a prefilter prior to azimuth compression in SAR is described. Then a new parameter estimation method based on joint time-frequency analysis is discussed and it can generate high resolution image. The computer simulation results illustrate its availability.更多还原