Geology ReportsSearch

USGS · 70112275

The geographic applications program of the U. S. Geological Survey

Abstract

The fundamental objective of modern Geography is to improve man's level of living through a better understanding of man-environment inter actions. Related goals of the USGS program for applications of remote sensor data to Geographical research are: (1) the analysis and improvement of land use, with special emphasis on urban problems; and (2) more effective use of the total available energy budget, including insolation, mineral fuels, atomic energy, human resources, and mental energy, all of which are integrated into man-environment interactions. The collection of data through remote sensors in air craft and spacecraft is financed largely by funds from NASA, and is part of the much broader EROS Program of the Department of the Interior. Results to date have achieved much toward the identification of remote sensor signatures for Earth features and human activities, and toward evaluation of instruments for collecting essential information.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Arch C. Gerlach. 1969. The geographic applications program of the U. S. Geological Survey. https://pubs.usgs.gov/publication/70112275

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related USGS reports

Image resolutions for ERTS, SKYLAB and GEMINI/APOLLO

Early in 1972 the first Earth Resource Technology Satellite (ERTS-A) is scheduled for launch in near-polar orbit. It will carry three return-beam-vidicon (RBV) TB cameras and a multispectral scanner (MSS). In 1973 a post-Apollo manned space flight called SKYLAB will orbit the earth at an inclination of 50° to the Equator. In addition to other sensors it will carry a battery of six multispectral cameras identified as experiment S190. This paper compares the images expected from ERTS and SKYLAB with those already obtained from GEMINI/APOLLO, all in terms of the photographic criterion of resolution. Recently provided data have led to several changes in the resolution of ERTS-A forecast a year ago (Colvocoresses, 1970).

Photogrammetric Engineering

ERTS-A satellite imagery

The first satellite designed to survey the Earth's resources is scheduled to be launched in 1972. This satellite, known as ERTS-A, will telemeter frames of imagery each covering 100-nautical-mile squares of the Earth. Except for the internal anomalies in the sensor system, the imagery, after being properly scaled, rectified, and controlled, may be considered an orthographic view of the Earth and used as a planimetric photomap. The accuracy of this photomap will be limited, principally by the geometric fidelity of the sensor system rather than by external effects, such as relief displacement, which restrict the direct cartographic use of the conventional aerial photograph. ERST-A is not designed as a topographic mapping satellite but does have real potential' for thematic mapping particularly in areas now covered by topographic maps.

Photogrammetric Engineering

Photographic systems for Apollo

The primary objective of the Apollo Lunar Program is to provide data for landing sites. The primary objective of Skylab is to demonstrate the ability of men to operate in space for extended periods of time. As a consequence, neither the missions nor the cameras in either program are optimum for photogrammetric operations. Nevertheless they provide an opportunity to evaluate the contribution that photogrammetry and space can make to the exploration of our own and other planetary bodies in the solar system. New equipment includes: an 18-inch fl camera exposing 430 frames on a roll of 5-inch wide film; a panoramic system of 24-inch fl, 108° sweep, 4.5 by 45-inch film for 1650 exposures; a terrain camera of 3-inch fl, 4.5 X 4.5 film frame; a stellar camera of 3-inch fl on 35-mm film; and a laser altimeter. Six multispectral cameras, 6-inch fl on 70-mm film are planned for Earth photos from Skylab.

Photogrammetric Engineering