Remotely sensed satellite imagery is becoming increasingly common as satellites equipped with technologically advanced sensors are continually being sent into space by public agencies and private companies around the globe.
ry, GIS data sources, & Image Archives - if you require data or imagery these are some fine resources and portals available for your use.
Satellite Imagery: Digital data obtained from sensors carried in satellites. It includes collecting data both in the visible and non-visible portions of the electromagnetic spectrum.
More ry support
Improved support for RADARSAT-2 and SPOT 5 imagery, and added support for others.
satellite image A picture of the earth taken from an earth-orbital satellite. Satellite images may be produced photographically or by on-board scanners (e.g., MSS). scale See map scale.
s are available too, users can zoom in until they see cars and, in some cities, people can be seen walking in the street (appearing as tiny black dots).
 Satellite imagery
False color IR image of Washington DC, taken by Landsat 7.
ry acquired daily at a variety of resolutions from a variety of sensors (i.e., Advanced Very High Resolution Radiometer (AVHRR) and Geostationary Operational Environmental Satellite (GOES)); ...
See Image and Image Processing. Land Records Glossary Page 6
An image of a portion of the surface of the earth that is captured by image sensors onboard an orbiting satellite and subsequently transferred to a control station on the ground.
Landsat satellite imagery and BIL information are used in RS Landsat. In one format, using BIL, pixel values from each band are pulled out and combined. Programs that use this kind of information include IDRISI, GRASS, and MapFactory.
Adding a ry Thematic Base Layer using the OpenLayers Plugin ...
Classifying Satellite Images with MultiSpec
Designing for Visibility
Zakem Bridge View Corridors ...
Free EarthSat ry
The preceding article demonstrated how to access and process free Canadian Landsat 7 data from the Canadian Geogratis site. Unfortunately, this site only offers Canadian coverage.
Cox, C. 1992. Satellite imagery, aerial photography and wetland archaeology. World Archaeology 24 (2): 249-67.
Defence Mapping Agency, 1984. Geodesy for the Layman. US Naval Observatory Report TR 80-003, Washington D.C., 16th March 1984.
Figure 3. A was draped on a 3-D terrain model using Able Software's R2V package.
The more adjacent columns having the same value, the greater the compression.
satellite image A picture of the earth taken from an earth-orbital satellite. Satellite images may be produced photographically or by on-board scanners (e.g.
Even aerial and ry can be incorporated into a GIS and viewed along with other data for the same area, as long as the ground extent of the image can be identified.
on the other hand, satellite imagery, which is an important source of environmental data is raster-based
C. SOURCES OF DATA
If color quality of color composites seems to appear poor, run r.colors on the selected satellite channels.
For example, digital satellite images can be analyzed to produce a map like layer of digital information about vegetative covers.
Aerial photography differs from ry in that the results are almost instantaneous and require only developing, ...
Satellite imagery such as Landsat TM and SPOT provide multispectral images of the earth, some containing seven or more bands.
SPOT ry for mapping Kirtland's warbler wintering habitat in the Bahamas. Wildl. Soc. Bull. 18:252-257. MURPHY, D. D., AND B. D. NOON. 1991. Coping with uncertainty in wildlife biology. J. Wildl. Manage. 55:773-782. NELSON, J. W.
IKONOS DEM Overlays - The author demonstrates how one can easily use free ortho rectified, aligned and georeferenced satellite imagery along with free data from the gisdatadepot and create stunning 3D imagery. (Oct. 2001) ...
Imagine is a specialized image processing software application developed mainly for analyzing remotely sensed ry. ArcGIS supports Imagine files with its Imagine Image Format Extension.
For example, digital satellite images generated through remote sensing can be analyzed to produce a map-like layer of digital information about vegetative covers.
Natural resource-oriented users will find that up-to-date ry, aerial photographs, as well as topographic, climatic and hydrographic data are all useful in environmental planning and resource monitoring.
Image map - (1) A map created from aerial photographs or satellite images by assembling them spatially (i.e. making a mosaic), correcting them geometrically (i.e. georeferencing and scaling) and adding cartographic symbols and place names, ...
These may include such items as digital terrain data, orthophotographs, and ry. These data may provide tremendous capability, but must be managed in ways different from traditional vector information.
(GTC) are developing a prototype GIS tool that integrates satellite imagery with layers of statewide GIS datasets. In addition, standard business process and site-selection methods are being created in the hopes of developing new industry standards.
National government users that employ aerial photography or ry in mapping or intelligence activities use Bentley Descartes. These include military, census, cadastre, and mapping agencies.
Can a property ownership map be related to a satellite image, a timely indicator of land uses? Yes, but, because digital data are collected and stored in various ways, the two data sources may not be entirely compatible.
See also: Satellite, Image, GIS, Information, Map