Abstract: A handheld system radio frequency identification (RFID) system for fine-grained RFID localization of an RFID target. Also disclosed is a mechanism for localizing RFID targets at all orientations through software-controlled polarization of two LP antennas. The system may detect an RFID target using a generated circularly polarized (CP) RF signal and accurately localize the RFID target using a generated linearly polarized (LP) signal. The disclosed systems and techniques discover and localize RFID concurrently and regardless of RFID target orientation.

Abstract: Described is the design, implementation, and evaluation of a robotic system configured to search for and retrieve RFID-tagged items in line-of-sight, non-line-of-sight, and fully-occluded settings. The robotic system comprises a robotic arm having a camera and antenna strapped around a portion thereof (e.g. a gripper) and a controller configured to receive information from the camera and (radio frequency) RF information via the antenna and configured to use the information provided thereto to implement a method that geometrically fuses at least RF and visual information. This technique reduces uncertainty about the location of a target object even when the object is fully occluded. Also described is a reinforcement-learning network that uses fused RF-visual information to efficiently localize, maneuver toward, and grasp a target object.