原文连接：http://scienceandglobalsecurity.org/archive/sgs12wilkening.pdf

This analysis assumes that a sensor like SBIR-High will be deployedto support boost-phase ballistic missile defense. The capability of a notional space-based infrared system like SBIRS-High has been examined in a recent American Physical Society (APS) study.7 This detector consists of a 30 cm telescope with a HgCdTe focal plane array that stares at 1/24 of the Earth’s surface every 33 msec, thus scanning the entire surface in less than one second unless it focuses intentionally on a narrow region of high interest. The APS study assumed that this sensor operated in one of the infrared atmospheric windows (e.g., 2.0–2.5 μm or 3.5–5 μm) as opposed to an infrared absorption band likeDSP, thereby allowing the sensor to see down to the Earth’s surface under clear conditions, with a 1 km× 1 km pixel footprint at the Earth’s surface.