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此项研究是国家科技攻关项目。在研究此课题以前,世界上采用的多光谱航空摄影机一直是小像幅的(大部分为6cmx6cm,代称为6MSP)。6MSP不能测图,分光“有害吸收”大,故图像质量差,且像幅小,飞行和后期加工量极大。本研究采用18cm×l8cm和23cm×23cm像幅航空摄影测量像机组成多光谱像机组,并设计了“截止滤光镜一特制感光胶片”组合的无“有害吸收”的分光系统,使本多光谱航空摄影像幅比6MSP加大了9倍和14.7倍,并能“一摄多用”,既能测图,又能进行资源调查和环境监测,其图像因无“有害吸收”,分光质量高,可供目视判读,也可输入计算机进行准确地物分类解译。18-23MSP是一项有效的航空遥感技术。
This research is a national scientific and technological project. Before studying this topic, the multispectral aerial video cameras used in the world were small pieces (mostly 6cmx6cm, known as 6MSP). 6MSP can not map, spectral “harmful absorption”, so the image quality is poor, and the image is small, flying and post processing volume is great. In this study, a multispectral imaging unit consisting of 18 cm × 18 cm and 23 cm × 23 cm pieces of aerial photogrammetric camera was designed and a “Harmless absorption” spectroscopy system with “a combination of cut-off filter and a special photographic film” was designed, Spectral aerial photographic image magnification 9 times and 14.7 times than the 6MSP, and can “take a photo with multiple”, both mapping, but also for resource investigation and environmental monitoring, the image because there is no “harmful absorption”, high spectral quality , For visual interpretation, can also be entered into the computer to accurately classified interpretation. 18-23MSP is an effective airborne remote sensing technology.