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美国西北部圣海伦火山爆发前,曾用Hughes飞机公司为美国海军A-6E飞机制造的夜袭系统——探测和测距仪(DRS)拍摄了红外热图,供地质学家监视温度异常区用。火山于1980年5月18日爆发后,又用一架海军的TC-4C Gulbstream型飞机作为监视平台拍摄了红外照片。该机停在圣海伦火山西北230km处,供训练A-6E机上人员使用DRS系统用。DRS有一稳定平台,可以负仰角进行跟踪,所记录的图像可立即重放。 DRS操作人员先用雷达屏幕对目标定位,然后转用热成像系统。后者有变焦功能,可以放大目标图像。该系统还包括一激光目标指示测距仪以及激光指向探测器。该系统作地质应用时,可事先探测到热量正从地底涌向地表的地区,并可在黑夜、雾天和烟雾中工
Before the outbreak of Mount St. Helens in the northwestern United States, an infrared heat map was taken with the Hughes Aircraft Nightfall Systems - Sounding and Rangefinder (DRS) for the US Navy's A-6E aircraft for geologists to monitor areas of abnormal temperature use. After the volcano erupted on May 18, 1980, an infrared photograph was taken using a navy's TC-4C Gulbstream aircraft as a surveillance platform. The aircraft parked at 230km northwest of Mount St. Helens for training A-6E crew members to use the DRS system. DRS has a stable platform that can track negative angles of elevation and the recorded images are immediately replayed. The DRS operator first targets the target with the radar screen and then switches to the thermal imaging system. The latter has a zoom function, you can enlarge the target image. The system also includes a laser target indicating range finder and laser pointing detector. The system for geological applications, the heat can be detected in advance from the ground to the surface area, and in the dark, fog and smoke workers