Department of information and Command Automation, Wuhan Radar Academy, Wuhan 430019, China.
IEEE Trans Image Process. 2010 May;19(5):1280-9. doi: 10.1109/TIP.2009.2039623. Epub 2009 Dec 31.
Imaging a fast maneuvering target has been an active research area in past decades. Usually, an array antenna with multiple elements is implemented to avoid the motion compensations involved in the inverse synthetic aperture radar (ISAR) imaging. Nevertheless, there is a price dilemma due to the high level of hardware complexity compared to complex algorithm implemented in the ISAR imaging system with only one antenna. In this paper, a wideband multiple-input multiple-output (MIMO) radar system with two distributed arrays is proposed to reduce the hardware complexity of the system. Furthermore, the system model, the equivalent array production method and the imaging procedure are presented. As compared with the classical real aperture radar (RAR) imaging system, there is a very important contribution in our method that the lower hardware complexity can be involved in the imaging system since many additive virtual array elements can be obtained. Numerical simulations are provided for testing our system and imaging method.
在过去的几十年中，快速机动目标的成像一直是一个活跃的研究领域。通常，采用具有多个元件的阵列天线来避免逆合成孔径雷达 (ISAR) 成像中涉及的运动补偿。然而，与仅使用一个天线的 ISAR 成像系统中实现的复杂算法相比，由于硬件复杂性水平较高，存在价格难题。在本文中，提出了一种具有两个分布式阵列的宽带多输入多输出 (MIMO) 雷达系统，以降低系统的硬件复杂度。此外，还提出了系统模型、等效阵列产生方法和成像过程。与经典的真实孔径雷达 (RAR) 成像系统相比，我们的方法有一个非常重要的贡献，即在成像系统中可以涉及更低的硬件复杂度，因为可以获得许多附加的虚拟阵元。提供了数值模拟来测试我们的系统和成像方法。
