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Aerospace
Industry that includes methods of travel and spacecraft for navigating the air or space.
4Categories 22286Terms
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Aerospace > Satellites 
spectral signature
Aerospace; Satellites
The quantitative measurement of the properties of an object at one or several wavelength intervals. Spectral signature analysis techniques use the variation in the spectral ...
detector responsivity
Aerospace; Satellites
The radiometric response of an electronic detector that converts photons into voltage or current. Detector responsivity includes the end-to-end optical and electrical path, since ...
cross-calibration
Aerospace; Satellites
The radiometrical comparison of one sensor to another sensor on different satellites. Imagers are often considered to be cross-calibrated if they are calibrated to a common source ...
linear quantizing
Aerospace; Satellites
The range of grey shades from maximum to minimum is divided into contiguous intervals, each of equal length, and each grey shade is assigned to the quantized class which ...
transmittance
Aerospace; Satellites
The ratio of the energy per unit time per unit area (radiant power density) transmitted through an object to the energy per unit time per unit area incident on the object. In ...
signal-to-noise ratio (SNR)
Aerospace; Satellites
The ratio of the level of the information-bearing signal power to the level of the noise power. SNR determines the precision of a radiometric measurement. The signal-to-noise ...
attenuation
Aerospace; Satellites
The reduction in the intensity of radiation, with distance from its source due to atmospheric absorption and/or scattering; it does not include the inverse-square decrease of ...
Sub-categories
- Control systems (1744)
- Satellites (11359)
- Space flight (8863)
- Space shuttle (354)