ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,723, issued on Feb. 24.
"RTK group positioning using a temporary base terminal device" was invented by Sangjoo Lee (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for calculating the precise positions of multiple terminal devices without the cost for permanent reference stations or local base station equipment includes combining the multiple terminal devices into a group, selecting the most appropriate terminal device from the group as a temporary base terminal device, checking if the temporary base terminal device is placed at a specific point whose position is known or easily knowable on a map, repeatedly performing rel...