AN EXTENDED RANGE-MODIFIED GRADIENT TECHNIQUE FOR PROFILE INVERSION
AN EXTENDED RANGE-MODIFIED GRADIENT TECHNIQUE FOR PROFILE INVERSION
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DOI：
10.1029/93rs01076
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发表时间：
1993-09-01
期刊：
影响因子：
1.6
通讯作者：
VANDENBERG, PM
中科院分区：
文献类型：
--
作者：
KLEINMAN, RE;VANDENBERG, PM
提出了一种利用散射场测量数据重建有界非均匀物体复折射率的方法。在迭代算法中同时重建对象内的索引和未知字段。该方法是对早期工作的改进，它包含了在迭代的每个阶段更新未知的更有效的方法。该算法具有较高的效率。给出了一些数值算例，说明了可以重建的对比的极限。这些限制表明，可以重建的对比范围比早期工作所能达到的范围要大。
A method for reconstructing the complex index of refraction of a bounded inhomogeneous object from measured scattered field data is presented. The index and the unknown fields within the object are simultaneously reconstructed in an iterative algorithm. The method is a refinement of earlier work which incorporates a more effective way to update the unknowns at each stage of the iteration. Considerable efficiency in the algorithm is achieved. Some numerical examples are given indicating the limits on the contrasts which can be reconstructed. These limits show that the range of contrasts that may be reconstructed is extended over that achievable with the earlier work.