多基线InSAR干涉相位的自适应估计

Adaptive estimate method for multi-baseline InSAR phase

针对不均衡噪声下相位解缠稳健性低的缺点,采用加权联合数据矢量作为信号模型,利用构造的噪声协方差矩阵进行自适应去噪处理,进而对相位进行估计,有效地改善了不均衡噪声下多基线相位估计的效果。仿真数据的处理结果表明,该算法提高了不均衡噪声下相位估计的稳健性。

Aiming at the low rubostness of the phase unwrapping aligorithm under uneven noise conditions, constructed a new adaptive covariance matrixs based on the model of the multibaseline optimal weighted data（MOWJD）vector, and removed the noise by noise covariance matrix. Then reduced the uneven noise impact on phase unwrapping. The experimental results show that the phase unwrapping rubostness is improved.