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文中提出一种基于坡度补偿的联合像素杂波抑制方法,为了消除混合基线InSAR构形下由于垂直基线引入的地形起伏干涉相位的影响,该方法利用坡度补偿技术使杂波局部满足独立同分布,并且利用杂波子空间和噪声子空间的正交性来抑制静止杂波,同时能够充分利用当前像素和周围像素的信息,因此对配准误差具有很好的稳健性.仿真和实测数据的处理结果证明了该方法的有效性.
In this paper, a joint pixel clutter suppression method based on slope compensation is proposed. In order to eliminate the influence of the terrain fluctuation interferometric phase introduced by the vertical baseline in the mixed baseline InSAR, this method uses the slope compensation technology to make the clutter satisfy the independent and identically distributed clutter, And the orthogonality between clutter subspace and noise subspace can be used to suppress the stationary clutter and to make full use of the information of the current pixel and the surrounding pixels so that it has good robustness to the registration error.The results of simulation and measured data processing The validity of this method is proved.