项目名称: 高质量机动目标InISAR三维成像研究
项目编号: No.61201405
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 电子学与信息系统
项目作者: 刘亚波
作者单位: 中国科学院电子学研究所
项目金额: 27万元
中文摘要: InISAR利用三天线干涉技术可以获取目标的真实三维视图,其获取机动目标高质量三维视图的关键包括:1.孤立散射点的获取方法,2.散射点相位保持技术,3.如何实现图像干涉。前两点可以归结为抑制旁瓣和噪声并且保持散射点相位信息的高质量ISAR图像的实现技术。为了实现第三点,需要研究通道不一致性校正及图像配准等问题。为了稳定的获得高质量InISAR三维目标图像,还需要考虑合成散射点、飞行时间段的选择等因素对干涉的影响。针对目标的不同特性,还需要研究存在游动部件的目标、高速目标和弱小目标等的InISAR三维成像。为了获得更大视角内目标结构特征,在以上研究基础上,需要进一步探索大转角内稀疏短孔径机动目标InISAR三维成像技术。
中文关键词: 干涉ISAR;机动目标;联合处理;超分辨;
英文摘要: InISAR can achieve a 3D imageries of target by using three antennas interferometry technique. There are three key points to obtain a high quality InISAR 3D image, which can be expressed as: 1. the method to obtain the isolated scatterers, 2. the target's original phase information presevation technique, and 3. how to achieve the interferometry between images. The former two points can be boil down to pursue the method can not only suppress the side-lobes and noise, but also preserve the phase information in high precision.In order to achieve the third point, it is necessary to research the channels mismatch calibration and images coregistration technique. Further more, we should consider the seriously affection of synthesis scaterers, imaging time, and so on carefully, and study InISAR 3D imaging of special targets such as target include spinning parts, the high speed target and weak target, and so on to enhance the robustness of the imaging algorithm. Based on the above research results, we will explore the InISAR 3D imaging of target observed in different short aperture under a large angle of view, which is benifit for acquisition more struction information of target.
英文关键词: InISAR;maneuvering target;combined processing;super resolution;