Monitoring Earth Resources from Aircraft and SpacecraftScientific and Technical Information Office, National Aeronautics and Space Administration, 1971 - Всего страниц: 170 |
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1969 Photointerpreter's results A/M A/C A/M A/C A/M Ac SB aerial photographs Agricultural Crop aircraft alfalfa altitude Apollo 9 Apollo 9 photography April 23 B-BS B/M B/M B/D barley fields black-and-white BSm BSd errors C/M C/M camera Color Plate commission errors conifer cotton crop categories crop type dates deciduous delineated Earth resource enhancement evaluating fields ber FIGURE film-filter combinations filter forest FRSL geologic graphs ground data Ground truth Total high-altitude imagery high-altitude photography identified Imperial Valley Incorrect indicate Infrared Ektachrome Infrared Ektachrome photograph land landforms legend March 12 Mesa test multiband multidate multistage sampling obtained optical Percent commission percentage correct identification Philco-Ford Phoenix Photointerpreter's results Ground plants preters Ranking results Ground truth S065 Apollo imagery sampling SB W BSm September 30 sequential soil sorghum space photographs space photos sugar beets taken test images tion Total fields Total percentage correct wildland
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Стр. 159 - ... harmonious and coordinated management of the various resources, each with the other, without impairment of the productivity of the land, with consideration being given to the relative values of the various resources, and not necessarily the combination of uses that will give the greatest dollar return or the greatest unit output.
Стр. 159 - American people; making the most judicious use of the land for some or all of these resources or related services over areas large enough to provide sufficient latitude for periodic adjustments in use to conform to changing needs and conditions...
Стр. 159 - Multiple use" means the management of all the various renewable surface resources of the national forests so that they are utilized in the combination that will best meet the needs of the American people; making the most judicious use of the land for some or all of these resources or related services over areas large enough to provide sufficient latitude for periodic adjustments in use to conform to changing needs and conditions; that some land will be used for less than all of the resources; and...
Стр. 143 - RC ALDRICH, and RC HELLER. 1969. Multi-stage sampling of forest resources by using space photography — an Apollo 9 case study.
Стр. 13 - A special color wheel used in this system results in the additive-color mixing of red and green hues. Sixteen levels of density can be referenced within each channel and "digitized" for subsequent quantification. The "level select" feature is nominally linear and can be expanded and contracted as with the IDECS system; each density level can also be modified should the image analyst prefer to weigh its importance in the display. An example of the output from this console viewer appears in Color Plate...
Стр. 154 - Judging from that table there are only four main categories of vegetation for which information is sought, viz, agricultural crops, timber stands, rangeland vegetation, and brushland vegetation.
Стр. 159 - ... second to forest resources. Agriculturists recently were asked to list, crop by crop, the specific applications of remote sensing that might prove profitable in terms of cost/ benefit ratios and total savings that might be effected. This resulted not only in their listing the six categories of information appearing in table 10-1 but also in their selecting the most important "candidate problems" in US agriculture — all dealing with damage that is done each year to specific crops by specific...
Стр. 150 - The results to date are encouraging on two counts: (1) the very practical problems of an operational survey are being faced and solutions are being found, and (2) it would seem that a fully operational agricultural inventory using space photography is not beyond the scope of present technology.
Стр. 148 - ... comparisons with ground data on the 32 sample plots) and to tabulate estimates of the acreage of barley and wheat in each cell without regard to the specific location of individual fields. The agricultural area within Maricopa County was divided into three nearly equal portions, and one interpreter was assigned to each area. The interpreters, chosen on the basis of high performance on preliminary photointerpretation tests, were trained using photos and ground data maps of areas they would not...
Стр. 151 - CW, et al. 1969 A system of regional agricultural land use mapping tested against small scale Apollo 9 color infrared photography of the Imperial Valley.