CAJ | 학술논문

针对运动误差较大并且存在相位误差模糊的情况，提出了一种结合对比度法解模糊的稳健多孔径图像偏置（multiple aperture mapdrift，MAM）算法，在场景不存在特显点条件下仍然可以取得较好的聚焦效果。该算法对特显点依赖低，利用多个不重叠的子孔径采用对比度法解模糊估计高阶相位误差，估计误差结果精度高。此外，该算法计算过程简单，有效提高了运算效率。最后通过仿真实验和实测数据处理验证了算法的有效性与可行性，取得了良好的效果。
침대운동오차교대병차존재상위오차모호적정황，제출료일충결합대비도법해모호적은건다공경도상편치（multiple aperture mapdrift，MAM）산법，재장경불존재특현점조건하잉연가이취득교호적취초효과。해산법대특현점의뢰저，이용다개불중첩적자공경채용대비도법해모호고계고계상위오차，고계오차결과정도고。차외，해산법계산과정간단，유효제고료운산효솔。최후통과방진실험화실측수거처리험증료산법적유효성여가행성，취득료량호적효과。
To overcome the ambiguity of large phase error induced by motion error,a robust algorithm of multiple aperture mapdrift(MAM)incorporating the contrast method is proposed.Specifically,it can promise high-quality focused image even in the case of dominant scatters absence.In the scheme,the modified MAM method takes advantage of non-overlap subapertures by using the contrast method to resolve the phase error am-biguity.In sequence,it is capable of providing precision estimation for high order phase error.In addition,the robust MAM method can reduce the computation complexity to promote the efficiency.Finally,the simulations and the result of real data processing confirm the validation of the proposed algorithm.