**Commenced**in January 2007

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**Edition:**International

**Paper Count:**31242

##### Bayesian Inference for Phase Unwrapping Using Conjugate Gradient Method in One and Two Dimensions

**Authors:**
Yohei Saika,
Hiroki Sakaematsu,
Shota Akiyama

**Abstract:**

We investigated statistical performance of Bayesian inference using maximum entropy and MAP estimation for several models which approximated wave-fronts in remote sensing using SAR interferometry. Using Monte Carlo simulation for a set of wave-fronts generated by assumed true prior, we found that the method of maximum entropy realized the optimal performance around the Bayes-optimal conditions by using model of the true prior and the likelihood representing optical measurement due to the interferometer. Also, we found that the MAP estimation regarded as a deterministic limit of maximum entropy almost achieved the same performance as the Bayes-optimal solution for the set of wave-fronts. Then, we clarified that the MAP estimation perfectly carried out phase unwrapping without using prior information, and also that the MAP estimation realized accurate phase unwrapping using conjugate gradient (CG) method, if we assumed the model of the true prior appropriately.

**Keywords:**
Bayesian inference using maximum entropy,
MAP
estimation using conjugate gradient method,
SAR interferometry

**Digital Object Identifier (DOI):**
doi.org/10.5281/zenodo.1073070

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[15] Yohei Saika, Hiroki Sakaematsu and Shota Akiyama, "Maximum Entropy and MAP Estimation using Conjugate Gradient Method for Phase Unwrapping," the International Journal of Science and Engineering Investigations, to be published.