VTOL Navigation Based on Radar Altimeter and Ground RF Repeaters

This paper introduces an innovative radar-based navigation approach designed to address precision navigation challenges for Vertical Take-Off and Landing (VTOL) platforms. The key innovation is a unique extension of radar altimeter functionality when used with ground navigation beacons realized by Radio Frequency (RF) repeaters. The proposed solution is intended to support helicopter and Advanced Air Mobility (AAM) autonomous operations.