Capabilities Of Multispectral Aerial Imagery For Military Geographic Information (MGI)

Theodore C. Vogel

doi:10.1117/12.954823

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8 September 1976 Capabilities Of Multispectral Aerial Imagery For Military Geographic Information (MGI)

Theodore C. Vogel

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Proceedings Volume 0079, Aerial Reconnaissance Systems: Pods/Aircraft I; (1976) https://doi.org/10.1117/12.954823
Event: 1976 SPIE/SPSE Technical Symposium East, 1976, Reston, United States

Abstract

To meet Army requirements for a more efficient method of obtaining terrain and environ-mental data, the U. S. Army Engineer Topographic Laboratories (ETL) designed and fabricated a unique multispectral aerial camera. This experimental camera employs a single lens, a beam dispersing system, and dichroic filters to divide the reflected light energy into four broad spectral bands: Blue, green, red, and near infrared. The resulting four spectrally separated images can be reconstituted into a number of displays using a four-channel, optical, additive color viewer. Over the past three years, the camera has been flown over the ETL remote sensor test areas to compare this system with conventional types of aerial photography for acquisition of MGI. During the test, multispectral imagery was obtained simultaneously with color, color IR, color negative, and panchromatic emulsions. In addition, ground data was also acquired during the overflight to ascertain the validity of imagery derived data. The initial results of the comparison indicate that the multispectral imagery provides the image interpreter with a highly flexible imaging system and a number of advantages over conventional emulsions. The advantages include better determination of drainage channels, better shoreline delineation, and better recognition of different vegetation species.

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Theodore C. Vogel "Capabilities Of Multispectral Aerial Imagery For Military Geographic Information (MGI)", Proc. SPIE 0079, Aerial Reconnaissance Systems: Pods/Aircraft I, (8 September 1976); https://doi.org/10.1117/12.954823

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