论文标题
使用机会照明器的能源有效无人机雷达成像系统的系统设计和分析
System Design and Analysis for Energy-Efficient Passive UAV Radar Imaging System using Illuminators of Opportunity
论文作者
论文摘要
无人机（UAV）可以为现代雷达成像系统提供卓越的灵活性和成本效益，这是使用合成孔径雷达（SAR）技术的高级遥感应用程序的理想平台。在本文中，首先提出并研究了使用机会照明器的节能无人机雷达成像系统。 UAV平台配备了SAR接收器，可被动地从外部照明器（例如SAR卫星，GNSS或基于地面的固定商业照明器）的目标场景的反向散射信号，并实现双静态SAR成像和数据通信。该系统可以通过增强的平台隐藏物为感兴趣的目标的雷达图像提供即时可访问性，这是隐身观察和场景监视的重要工具。任务概念和系统框图首先提出了有关系统优势的理由。然后，建立了一组任务绩效评估人员，以全面评估系统的能力，包括无人机导航，被动SAR成像和沟通。最后，通过数值模拟验证了拟议的绩效评估者的有效性。
Unmanned aerial vehicle (UAV) can provide superior flexibility and cost-efficiency for modern radar imaging systems, which is an ideal platform for advanced remote sensing applications using synthetic aperture radar (SAR) technology. In this paper, an energy-efficient passive UAV radar imaging system using illuminators of opportunity is first proposed and investigated. Equipped with a SAR receiver, the UAV platform passively reuses the backscattered signal of the target scene from an external illuminator, such as SAR satellite, GNSS or ground-based stationary commercial illuminators, and achieves bi-static SAR imaging and data communication. The system can provide instant accessibility to the radar image of the interested targets with enhanced platform concealment, which is an essential tool for stealth observation and scene monitoring. The mission concept and system block diagram are first presented with justifications on the advantages of the system. Then, a set of mission performance evaluators is established to quantitatively assess the capability of the system in a comprehensive manner, including UAV navigation, passive SAR imaging and communication. Finally, the validity of the proposed performance evaluators are verified by numerical simulations.
