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The Ranging and Nanosatellite Guidance Experiment (RANGE)

Project Sponsor
Terra Bella (formerly Skybox) University Cubesat Partnership
Start Date
Project Status
Currently in orbit
Faculty Investigator
Dr. Brian Gunter
RANGE consisting of two 1.5 U cubesats, seeks to demonstrate an order-of-magnitude improvement in absolute orbital position knowledge compared with traditional CubeSats and inter-satellite distance measurement with mm-level precision using laser ranging measurements.


The RANGE mission involves two 1.5U cubesats flying in a leader-follower formation with the goal of improving the relative and absolute positioning capabilities of nanosatellites. The satellites’ absolute positions will be tracked using GPS receivers synchronized with miniaturized atomic clocks, and will be validated using ground-based laser ranging measurements. The relative position of the satellites will be measured using an on-board compact laser ranging system, which will also double as a low-rate optical communication system. The satellites will not have an active propulsion system, so the separation distance of the satellites will be controlled through differential drag techniques. The results of the mission should serve to enable more advanced payloads and future mission concepts involving formations and constellations of nanosatellites.


RANGE successfully launched into orbit on Monday, Dec 3rd, 2018, around 1:34 ET on board a SpaceX Falcon-9 rocket as part of Spaceflight’s SSO-A mission, becoming Georgia Tech’s first small satellite to reach orbit!  The mission is currently in a mission operations phase. Below is a photo of the launch:


Where is it now?