多基线InSAR(Muti-baseline InSAR)可以进行三维层析成像,用于地面遥感与地下地质情况分析。受限于实际系统,多基线InSAR的基线数目非常少,使用传统方法成像时分辨率很低。为提高高度维分辨率,文中建立了多基线InSAR成像的阵列信号处理模型,将阵列信号处理中的MUSIC算法应用到多基线InSAR的高度维成像中,进行数字仿真实验,仿真结果表明,文中的方案能提高多基线InSAR高度维的分辨率,获得较低的旁瓣。

Tomographic images which used to remote sensing and geological analysis could be obtained by multi-baseline InSAR. The height dimensional resolution was very poor when we used traditional algorithm directly because of small number of baselines.To improve the resolution, an array signal model is proposed in this paper, and then MUSIC algorithm on array signal processing is used in height dimensional imaging of multi-baseline InSAR. Finally a digital simulation experiment is carried out and the result indicates that the scheme proposed in this paper can improve the height dimensional resolution greatly and the sidelobe is lower too.