The Space Based Space Surveillance (SBSS) System provides the only space-based sensor in the U.S. Air Force Space Surveillance Network with the ability to detect debris, spacecraft or other distant space objects without interference from weather, atmosphere or time of day. SBSS spacecraft features a visible sensor mounted on an agile, two-axis gimbal. That allows ground controllers to quickly move the camera between targets without having to expend the time and fuel to reposition the entire spacecraft. The satellite also has an onboard image-processing payload and software developed by Boeing that is reprogrammable to enhance mission flexibility and upgrades. The SBSS Satellite Operations Center has an open, flexible ground architecture with the ability to add additional satellites and sensors.