A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System
A Novel Wide Area Multiple Azimuth Beam ISAR Imaging System
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DOI：
10.1109/access.2019.2914084
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发表时间：
2019-04
期刊：
影响因子：
3.9
通讯作者：
Taoli Yang;Lei Yang;G. Bi;Yong Wang
中科院分区：
文献类型：
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作者：
Taoli Yang;Lei Yang;G. Bi;Yong Wang
提出了一种新型多方位波束(MAB)逆合成孔径雷达(ISAR)系统以及相应的处理算法，这是一种很有前途的广域监视技术。该系统的概念是获得多个运动目标的大面积ISAR图像，与单波束系统相比，它将极大地提高监视速度范围。该天线发射一系列高增益和窄雷达波束，以快速扫描大范围，并同时接收来自所有子带的回波。为了实现广域ISAR成像，提出了两种基于数字波束形成(DBF)的处理方法来分离重叠信号。从监视区域、监视速度范围和转向角误差三个方面分析了该系统的性能。最后，给出了一个典型的ISAR系统，并通过仿真实验进行了验证。
A novel multiple azimuth beams (MAB) inverse synthetic aperture radar (ISAR) system, as well as, the corresponding processing algorithms are proposed in this paper, which is a promising technology for wide area surveillance (WAS). This system concept is intended to obtain wide area ISAR images of multiple moving targets, which would greatly increase the surveillance velocity range compared with the single beam system. The antenna transmits a sequence of high-gain and narrow radar beams to quickly scan a wide area, and receives the echoes from all the subswaths simultaneously. Two processing methods based on digital beamforming (DBF) are presented to separate the overlapped signals for achieving the wide area ISAR images. The performance of the proposed system is analyzed from the perspectives of the surveillance area, surveillance velocity range, and steering angle error. Finally, an exemplary ISAR system is presented and verified by the simulation experiments.