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为了将极化信息有效的和干涉信息融合,提高数字高程模型(DEM)反演的精度,提出一种基于相似性参数的相干增强方法,基于加权中值滤波的相位滤波器以及基于加权的枝切法的相位解缠方法。该文从理论上分析了该方法和传统方法的性能。实验结果表明:与传统方法相比,该方法可以充分利用极化信息,有效地增强相干性,并将相位的质量提高7%,有效地抑制了噪声,将残余点数减少了95%以上,并快速精确地得到了三维地形图。
In order to improve the accuracy of digital elevation model (DEM) inversion by combining the effective polarization information with the interference information, a coherent enhancement method based on similarity parameters, a phase filter based on weighted median filtering and a weighted branch Method of phase unwrapping This paper theoretically analyzes the performance of this method and the traditional method. Experimental results show that this method can make full use of the polarization information, enhance the coherence effectively, increase the phase quality by 7%, suppress the noise effectively and reduce the residual number by more than 95% compared with the traditional method Get three-dimensional topographic maps quickly and accurately.