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0.63 - 0.69um Species differentiation for crop classification 
(chlorophyll absorption band); rangeland biomass 
estimation. 
0.76 - 0.90um Water body delineation; ratioed with 0.63 - 
0.69um band for vegetation and biomass studies. 
-— 
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on 
1 
1.75 um Vegetation moisture conditions (indicator of 
vegetation vigor); snow/cloud differentiation; 
surface water mapping; soil moisture measurement 
(after rainfall or irrigation). 
2.08 
2.35 um Discrimination of hydrothermally altered rock 
from unaltered zones, discrimination and mapping 
of rock types, and determination of plant vigor. 
10.4 - 12.5 um Crop classification and disease detection; 
vegetation density and cover-type identification; 
urban land use identification (temperature 
differences between man-made and natural objects); 
monitor temperature gradients in power plant out- 
falls, urban "heat islands," river/lake/estuary 
current, etc. 
Additionally, spatial resolution has been improved to a 30-meter instan- 
taneous field of view,and radiometric resolution (sensitivity) has been 
increased by improving signal-to-noise characteristics. 
Although the TM is expected to be the "workhorse scanner" of the 1980's, 
it may be the last satellite scanner to have moving optics. Developments 
are proceeding to perfect a scanner with no moving parts, using 
multilinear array detectors that will scan along the track, rather than 
across the track. Efforts are also being expended toward developing 
detectors for the thermal infrared region that do not require active 
cooling systems. Experimentation with such advanced scanning systems is 
not likely, however, before the mid- to late 1980's. 
Large Format Camera (LFC) - During the 1980-81 time period, a large 
camera system is planned for operation in orbit aboard the Space Shuttle. 
The LFC is a precision cartographic system that will provide high spatial 
resolution photography with high geometric fidelity. Stereo photographic 
images with large base-to-height ratios may be obtained by means of over- 
lapping film images up to 80 percent. The camera has a wide angle 
metric lens with 30.5cm focal length and f/6.0 aperture. The image 
format is 22.8cm x 45.7cm. A singie image from an altitude of 297km will 
provide a ground footprint of 222km by 445km. Image motion compensation 
is provided by means of image plane translation. The camera is capable 
of providing 1200 or 2400 frames of imagery per flight (610 meters or 
1220 meters of film, depending on the type selected]. 
The initial flight of the camera system will be for demonstration and 
evaluation of its capability for Earth resources applications. The