传统的基于FFT的ISAR成像算法，受成像角度的限制，分辨率非常有限。为了提高图像分辨率，本文根据目标回波的特点，提出了先用矩阵束方法在频域进行数据处理，再用FFT进行横向分辨的ISAR成像方法。实测数据处理结果表明了该方法的有效性。

Commonly used imaging algorithms based on FFT has low resolution because of the limitation of imaging angle. In order to improve the resolution, a feasible scheme is proposed in this paper. Matrix pencil is used to extrapolate frequency data, ISAR imaging is got from the extrapolated frequency data using FFT. The result of experiments show that this algorithms is effective.

TN958