非规则采样综合孔径无源成像重建算法分析  

The Analysis of the Reconstruction Algorithms for Passive Synthetic Aperture Imaging With Irregular Sampling

作　　者：高昭昭 张晓芸 李世文 陈良兵[2] 丰励 

机构地区：[1]电子信息控制重点实验室,成都610036 [2]南昌大学信息工程学院,南昌330031 [3]湖北工业大学信息工程学院,武汉430068

出　　处：《电子信息对抗技术》2018年第1期38-43,共6页Electronic Information Warfare Technology

基　　金：电子信息控制重点实验室基金;江西省科技厅青年科学基金(20151BAB213034);国家自科基金(NSF41505015)

摘　　要：受制于平台限制,毫米波综合孔径无源成像探测技术在部分应用环境下不得不采用非规则阵列,其形成的空频域采样是非规则采样,因此如何实现从非规则空频域到规则空域的有效映射成为一个新的问题。本文针对该问题,探讨了几种典型重建算法,并通过仿真对这些重建算法进行了分析对比,分析结果表明结合正则化的阵列因子成形重建算法可以满足非规则综合孔径无源成像重建的要求,该研究结果对毫米波综合孔径无源成像探测技术应用具有实际工程指导意义。Due to the restriction of the platform, passive millimeter-wave synthetic aperture imaging for target detection has to use an irregular array for some applications, which causes that the corresponding samples in spatial frequency domain are irregularly distributed. Thus how to realize the mapping with the irregular spatial frequency domain to the regular spatial domain becomes a new problem. Several reconstruction algorithms are discussed, and simulations are conducted to analyze the performance of the algorithms. The simulation results show that the algorithm based on the array factor forming with the regularization satisfies the performance requirements. The results of the study provide a nice guidance for the passive millimeter-wave synthetic aperture imaging for detection.

关 键 词：综合孔径 毫米波无源成像 非规则采样 图像重建 

分 类 号：TN971.1[电子电信—信号与信息处理]