Home of the SlimSAR SAR payloads for urgent ISR needs Operating altitude 3,000-25,000 ft AGL for UHF, L, and X ARTEMIS, Inc. has been supporting the Synthetic Aperture Radar (SAR) programs for over a decade with development and manufacturing. Our Receivers, Exciters, and Upconverters (REUs) are a part of Global Hawk, U-2, and ASTOR. Please email yuly@artemisinc.net for additional information.