摘要
自适应联合时频方法应用于逆合成孔径雷达成像中,可以估计运动目标回波相位参数实现精确成像,但其应用受到假设条件的限制而逐渐不能满足复杂运动目标高分辨成像的需求。首先介绍自适应联合时频方法的成像原理及研究现状;然后深入分析经典自适应联合时频方法的不足并提出一种改进方法;最后通过对比不同方法对实测数据的成像效果,验证改进方法的有效性。
The adaptive joint time-frequency （AJTF） method, which applied in inverse synthet- ic aperture radar （ISAR） imaging, could estimate the echo phase parameters and obtain clear image of the motion target, however, its application cannot satisfy the needs of complex motion target and high resolution imaging caused by the limitation of assumed conditions. The imaging principle and current research situation of AJTF is introduced firstly. Then, the shortage of AJTF is deeply analyzed and an improved method is presented. As the imaging effect comparison with different imaging methods, the effectiveness of the improved AJTF method is verified.
作者
劳国超
尹灿斌
叶伟
LAO Guo-chao,YIN Can-bin,YE Wei(Space Engineering University, Beijing 101416, Chin)
出处
《电子信息对抗技术》
2018年第2期24-28,47,共6页
Electronic Information Warfare Technology
