The next-generation missile warning system

November 26, 2005 The team developing the United States's next-generation missile warning system has completed preparations to enable the payload for the first Space-Based Infrared System (SBIRS) geosynchronous orbit (GEO) satellite to begin engineering thermal vacuum testing. The SBIRS GEO payload consists of a scanning sensor and a staring sensor, with sensor pointing achieved by the spacecraft's Pointing Control Assembly (PCA). The scanning sensor is designed for continuous observation and surveillance of traditional intercontinental ballistic missile threats, while the staring sensor is designed to detect very low signature, short-burn-duration theatre missiles. The staring sensor recently completed its flight-acceptance test. One of the most significant program milestones, thermal vacuum testing verifies the payload functionality and performance in a vacuum environment, where the payload is stressed at temperature extremes greater than those expected during on-orbit operations. The baseline ambient functional tests as well as radiometric tests will be repeated in this "test-it-like-it-flies" environment with the infrared sensors at their cryogenic operating temperatures.

« Back to The next-generation missile warning system