Three Dimensional Radar Imaging by Using Spherical Near Field Range
In this paper,a high performance three dimensional radar image with size 1.5 meter by 1.5 meter and far field RCS versus aspect angle is performed by using the spherical near field range.By using the near field to far field transformation,the high fidelity radar image and radar cross section(RCS)can be generated.The radar system is impulse time domain system.The pulse width and pulse repetition frequency of radar are 30 ps and 1MHz respectively.Figure 2 shows the simulation image result of 12 scatter points target model,distributed on 1.5 meter by 1.5 meter plane,by using the near field spherical range.Figure 2 shows the structure of near field scanner.The target is mounted on the horizontal positioner.By the rotation of the target,the near field ISAR image can be generated at special aspect angle.The impulse time domain radar system is moved along the arch.By using the radar movement along the arch and the target rotation on the postioner the three dimensional near field ISAR radar image can be generated.By using the field transformation from near field to far field,the high performance radar image and RCS can be generated.
Dau-Chyrh Chang Chih-Hung Lee Tsung-Yuan Yang
Oriental Institute of Technology,Taiwan Yuan Ze University,Taiwan;Electronics Testing Center,Taiwan Electronics Testing Center,Taiwan
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
427-429
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）