- Industry: Aerospace
- Number of terms: 16933
- Number of blossaries: 2
- Company Profile:
The Executive Branch agency of the United States government, responsible for the nation's civilian space program and aeronautics and aerospace research.
Describing an image in which image displacements due to tilt and relief have been removed.
Industry:Aerospace
Describing films or detectors that are sensitive to broadband electromagnetic radiation (the entire visible part of the spectrum). Landsat 7 has a 15 m "panchromatic" band that extends into the near-IR and covers the spectral region between 0.52-0.9 µm.
Industry:Aerospace
Each Landsat image collected is called a scene. Each Landsat scene is dimensionally 115 x 106 (185 x 170 km) miles. The globe is divided into 57,784 scenes, and each Landsat 7 scene has about 3 billion bytes of data.
Industry:Aerospace
Either of the two points at which the orbit of a heavenly body intersects a given plane, especially the plane of ecliptic. With respect to Landsat, the orbital nodes occur at the equator, one on the descending, or daylight, track of the orbit and the other on the ascending, or nighttime, track.
Industry:Aerospace
Electromagnetic radiation of shorter wavelength than visible radiation but longer than X-rays; roughly, radiation in the wavelength interval between 10 and 4,000 angstroms.
Industry:Aerospace
Electromagnetic radiation of the wavelength interval to which the human eye is sensitive; the spectral interval from approximately 0.4 to 0.7 µm (4,000 to 7,000 angstroms).
Industry:Aerospace
Encompasses all the various operations which can be applied to photographic or image data. These include, but are not limited to: image compression, image restoration, image enhancement, preprocessing, quantization, spatial filtering, and pattern recognition techniques. The term usually refers to the application of such operations by digital means.
Industry:Aerospace
Energy emitted as a result of changes in atomic and molecular energy states and propagated through space at the speed of light, i.e., energy transfer in the form of electromagnetic waves or particles that propagate through space at the speed of light. The term radiation is used commonly for this type of energy, although it actually has a broader meaning. Also called electromagnetic energy. See electromagnetic spectrum.
Industry:Aerospace
Equations converting unitless digital numbers (DN) from the satellite imager to brightness temperature, a measure of the amount of energy being radiated by the target. Brightness temperature is not the internal (kinetic) temperature of the target except when the emissivity of the target is unity. The at-satellite brightness temperature includes atmospheric radiance so it does not represent the brightness temperature of the surface.
Industry:Aerospace
