The November 2023 Innovation article discusses the use of GPS Phase reflectometry on Hawaii’s Haleakalā, a complex known as “Science City”.

The site, which is located near the town of Lanai, is home to various optical telescopes and instruments, including the largest solar telescope in the world, a satellite laser ranging station, and the Department of Defense’s Hawaii Space Surveillance Complex.

The article focuses on the operation of the GPS-R system on Haleakalā, which uses reflected signals to gather information about the surface from which they were reflected.