美国空军正在对几种红外传感技术做出评价,这些技术将改善探测、跟踪敌方弹道导弹或巡航导弹及准确地计算出其弹着点的能力。凝视和扫描型焦平面阵列都在被考虑用于下一代早期预警飞船。该飞船计划将于九十年代初期交付北美防空指挥部投入使用。目前USAF/TRW防御支援计划(DSP)中,早期预警卫星使用的传感器为360度扫描器,它监测对应于地球大气中水份和二氧化碳光谱带的2.7μm光谱线。十几年来,一组由三颗离地球高度22300海里同步卫星组成的系 The U.S. Air Force is evaluating several infrared sensing technologies that will improve its ability to detect, track enemy ballistic missiles or cruise missiles and accurately calculate its impact point. Both gaze and scanning focal plane arrays are being considered for the next generation of early warning spacecraft. The spacecraft is scheduled to be delivered to North American Air Defense Command in the early 1990’s. Currently in the USAF / TRW Defense Support Program (DSP), the sensor used by early warning satellites is a 360-degree scanner that monitors a 2.7-μm spectral line corresponding to the water and carbon dioxide spectral bands in the Earth’s atmosphere. For more than a decade, a group of three geostationary satellites at a height of 22,300 nautical miles from Earth has been deployed