The top secret URSALA, RAQUEL, and FARRAH satellites

The URSALA, RAQUEL, and FARRAH satellites are a trio of small satellites developed by the US Air Force Research Laboratory's 12th Space Warning Squadron. These satellites are part of the Space-Based Infrared System (SBIRS) program, which aims to provide missile warning and tracking capabilities. The URSALA, RAQUEL, and FARRAH satellites are specifically designed to detect and track ballistic missiles during their boost phase. They are equipped with sensors that can detect the infrared radiation emitted by the missile's propulsion system. The satellites are expected to provide early warning and tracking data to the US military, allowing for timely and effective response to potential threats. The development of these satellites is a significant milestone for the SBIRS program, which has faced various delays and cost overruns in the past. The successful launch of the URSALA, RAQUEL, and FARRAH satellites marks a key step towards achieving the program's objectives.