Tracking of metallic targets using a retro-reflective array at 26 GHz

This paper presents a design concept to aid in the detection and tracking of objects in a cluttered environment. The goal is to uniquely identify large, relatively cylindrical metallic objects in a warehouse setting. In addition to the challenge of determining the object's precise location, it is also desirable to uniquely identify each cylinder. The application is similar to RFID but differs in that much longer range of operation is needed and operation on metallic objects is required. A planar Van Atta retro-reflector is used as the baseline for the RF tag with large angle-independent radar cross-section.