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提出一种新的无相位检测电磁逆散射成像方法,该方法基于测量的总场幅度首先构造价格函数,通过优化该价格函数复原散射场幅度和相位;由复原的散射场幅度和相位重建目标的几何参数和电磁参数.相位复原所需计算时间远小于对目标成像所需计算时间,不增加逆散射的计算成本,具有较强的实用性.在逆源方法中引入等效电流源降低了逆问题的非线性度,等效电流源非辐射分量的重建提高了目标重建的质量.文中首次用实验结果验证了电磁逆散射无相位检测的可行性,证明了方法的有效性和高度稳定性.
A new phaseless detection electromagnetic backscatter imaging method is proposed. The method first constructs a price function based on the measured total field amplitude, and restores the amplitude and phase of the scattering field by optimizing the price function; reconstructs the target from the restored scattering field amplitude and phase Geometric parameters and electromagnetic parameters.Recomposition of the phase required to calculate the time is much smaller than the target imaging time required to calculate the cost of backscattering does not increase the cost of strong practicality.Adopting an equivalent current source in the inverse source method reduces the inverse The non-linearity of the problem and the reconstruction of the non-radiative component of the equivalent current source improve the quality of target reconstruction.The experimental results verify the feasibility of non-phase detection of electromagnetic inverse scattering for the first time and prove the effectiveness and stability of the proposed method.