Targeting Sensor is a technology that can be researched at the War Center in Tech Level 4. It costs 300 Food and 200 Nova, and gives Mechs, Ships, Command Centers, Fortresses, and Turrets +1 attack, range, and line of sight. External Sensor Pod must be researched before it becomes available.
Like the previous upgrades, this is very useful for improving base defenses, Mechs, and Ships. With these upgrades, it's harder for the enemy's Assault Mechs to outrange base defenses, and easier for the player's Mechs to outrange the enemy's defenses.
"Targeting Sensor technology again applies to Mechs, Ships, and defensive structures, granting them even greater attack strength, range and line of sight."