Software-Controlled Active Electronically Scanned Array Radar for Airbone Ground Surveillance

跟踪移动物体（如地面车辆、船舶、飞机、人员）的状态在通信、执法、国防和生物医学工程中有许多应用。各种各样的传感器（如雷达、视频、声纳、红外），可以是固定的，也可以安装在移动平台上（如飞机、卫星、船舶、汽车），可以产生测量结果，进而用于估计移动物体的未知状态。随着近年来传感器、计算机硬件和软件技术的进步，可以根据不断变化的环境，自适应地实时修改传感器的处理、操作方式和配置。例如，有源电子扫描阵列（AESA）雷达可以自适应地实时改变波形、采样时间和传感模式。适应的目标是提供快速响应能力或敏捷性。****有了自适应，通过尽可能地减轻环境的影响、建模的不确定性和传感的不准确性，可以获得最准确的目标检测、状态估计和分类结果（即从可用的传感器中获得最佳结果）。这正是提出这项工作的动机。在这个项目中，我们建议开发一套自适应算法，特别适用于机载AESA雷达监视系统中的多传感器多目标跟踪。经过一些改变，同样的概念也可以用于智能公路系统（IHS）和海上船舶交通管理服务（VTMS）系统

Tracking the states of mobile objects (e.g., ground vehicles, ships, aircraft, people) has many applications in communications, law enforcement, defense and biomedical engineering. A wide variety of sensors (e.g., radar, video, sonar, infrared), which may be stationary or mounted on mobile platforms (e.g., aircraft, satellites, ships, cars), are available to generate measurements that are in turn used to estimate the unknown states of mobile objects. With the recent advances in sensor, computer hardware and software technologies, it is possible to adaptively modify the processing, operational modality and configuration of sensors in real time in response to the ever-changing environment. For example, with an active electronically scanned array (AESA) radar, one can adaptively change waveforms, sampling time and sensing mode in real time. The objective of adaptation is to provide rapid response capability or agility.****With adaptation, it is possible to obtain the most accurate object detection, state estimation and classification results (i.e., get the best out of the available sensors) by mitigating as much as possible the effects of the environment, uncertainties in modeling and inaccuracies in sensing. This is precisely the motivation for the proposed work. In this project, we propose to develop a set of adaptive algorithms with particular application to multisenor-multitarget tracking in airborne surveillance systems with an AESA radar. With some changes, the same concepts can be used in intelligent highway systems (IHS) and maritime vessel traffic management service (VTMS) systems as well.**