Dynamic Signature System Airborne Calibration Device

Effective radar calibration is a crucial element of RCS metrology. Legacy dynamic calibration techniques include balloon launched passive calibration spheres, trihedral reflectors, and active repeaters, as well tower based calibration devices (CDs) adjacent to the radar scan volume. These techniques can be costly and have a potential environmental impact. This program emphasizes the development of a recoverable, reusable CD to improve reliability and repeatability calibration measurements for signature measurement radar systems, while decreasing cost and environmental impact. Dynamic test ranges, need recoverable and reusable calibration devices, however, other innovative calibration options that meet the minimal needs will be considered. The work completed during this SBIR Phase I effort evaluated several alternative outdoor, long range radar calibration devices and methodologies as candidates for developing a prototype CD within a follow-on Phase II continuation of the program. The result of the evaluation of candidate alternatives, the Autonomous Flying Sphere was determined to offer the most potential as a next-generation CD, in terms of technical development risk versus operational benefit to the U.S. Government versus commercial viability and potential business growth for STAR Dynamics.