A Phase Retrieval Technique Based on Functional Extremes for Phaseless Near-Field Measurements and Holographic Diagnoses

HU Hong-fei; GAO Xue; FU De-min; MAO Nai-hong

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A Phase Retrieval Technique Based on Functional Extremes for Phaseless Near-Field Measurements and Holographic Diagnoses

更新时间：2025-07-16

- A Phase Retrieval Technique Based on Functional Extremes for Phaseless Near-Field Measurements and Holographic Diagnoses
- Acta Electronica Sinica Vol. 30, Issue 12, Pages: 1772-1775(2002)
- 作者机构：
  
  西安电子科技大学天线与微波技术国家重点实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM154
- Published：2002
- 稿件说明：
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HU Hong-fei, GAO Xue, FU De-min, et al. A Phase Retrieval Technique Based on Functional Extremes for Phaseless Near-Field Measurements and Holographic Diagnoses[J]. Acta Electronica Sinica, 2002, 30(12): 1772-1775.
DOI：

HU Hong-fei, GAO Xue, FU De-min, et al. A Phase Retrieval Technique Based on Functional Extremes for Phaseless Near-Field Measurements and Holographic Diagnoses[J]. Acta Electronica Sinica, 2002, 30(12): 1772-1775. DOI：

摘要

相位恢复是无相位近场测量和全息诊断的关键技术.本文考虑探头修正

构造加权目标泛函

给出避免局部极值的无相位测量条件.为提高计算效率和工程实用性

对Fletcher-Reeves共轭梯度法采取再开始技术、FFT算法和构造迭代初值等改进措施.数值模拟表明

应利用有关天线和近场测量的先验信息

选取尽量少的搜索变量.实验结果验证了本文方法的正确性和有效性.

Abstract

Phase retrieval techniques are key to phaseless near-field measurements and holographic diagnoses.Based on the probe correction

the weighed functional are constructed and the phaseless measurement condition is presented to avoid local extremes.For the purpose of iterative efficiency and practicality

Fletcher-Reeves conjugate gradient method is modified by the application of re-beginning technique

FFT algorithm and construction of initial guess.Numerical simulations show that the search variables should be selected as less as possible in virtue of a priori information on the antenna under test and near-field measurements.Experimental results prove this technique to be accurate and efficient.

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