Research on spatial-variant property of bistatic ISAR imaging plane of space target

• 作者: 傅雄军 尚朝轩 王俊岭 郭宝锋 高梅国
• 来源期刊: 中国物理B（英文版）
• 关键词: space target bistatic ISAR imaging plane spatial-variant property
• 年，卷（期）: 2015,（4）
• 页码范围: 048402-1-048402-14
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/24/4/048402

摘要

The imaging plane of inverse synthetic aperture radar (ISAR) is the projection plane of the target. When taking an image using the range-Doppler theory, the imaging plane may have a spatial-variant property, which causes the change of scatter’s projection position and results in migration through resolution cells. In this study, we focus on the spatial-variant property of the imaging plane of a three-axis-stabilized space target. The innovative contributions are as follows. 1) The target motion model in orbit is provided based on a two-body model. 2) The instantaneous imaging plane is determined by the method of vector analysis. 3) Three Euler angles are introduced to describe the spatial-variant property of the imaging plane, and the image quality is analyzed. The simulation results confirm the analysis of the spatial-variant property. The research in this study is significant for the selection of the imaging segment, and provides the evidence for the following data processing and compensation algorithm.