Elevation Tracking is a technology that can be researched at the War Center in Tech Level 2. It costs 150 Food, and gives Mechs, Ships, Command Centers, Fortresses, and Turrets +1 attack, range, and line of sight. It must be researched before External Sensor Pod becomes available.
"This Tech Level 2 technology enhances Mechs and Ships, as well as Command Centers, Fortresses, and Turrets, with bonuses to their attack ratings, their maximum range and their line of sight."
—Manual description