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讨论了自由空间中导体柱微波成像的实数遗传算法,导体柱的围线用有限项三角级数所逼近的形状函数来表示。散射问题用矩量法来模拟,逆散射问题转换成受限制的优化问题。以三角级数的系数为优化变量,通过尽量减小散射场幅度的测量值与计算值之间的相对误差来不断优化。并通过实例验证了此方法的优越性。
The real-valued genetic algorithm for microwave imaging of conductor columns in free space is discussed. The contour of the conductor column is represented by the shape function approximated by the finite-element triangular series. The scattering problem is modeled by the moment method, and the inverse scattering problem is transformed into a restricted optimization problem. Using the coefficients of the trigonometric series as optimization variables, the optimization is optimized by minimizing the relative error between the measured and the calculated values of the magnitude of the scattered field. An example is given to verify the superiority of this method.