Satellites

Satellites

Of or relating to any man-made object launched to orbit Earth or another celestial body.

Industry: Aerospace

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Satellites

Panchromatic

Aerospace; Satellites

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 ...

Any unwanted disturbance affecting a measurement (as of a frequency band), especially that which degrades the information-bearing quality of the data of interest. Noise determines the precision with ...

Radiometric reflective band calibration: radiance

Aerospace; Satellites

Calibration equations to convert unitless values from an optical satellite imager in Digitals Numbers (DNs) to engineering or scientific units such as at-satellite radiance or spectral radiance. ...

Data compression

Aerospace; Satellites

Any technique that condenses the available data so as to make data storage or transmission more efficient. Data compression can be lossy in which some amount of information (data) is lost or lossless ...

Return beam vidicon (RBV)

Aerospace; Satellites

As used on Landsat 1 and 2, a camera system which operated by shuttering three independent cameras simultaneously, each sensing a different spectral band in the range of 0.48 to 0.83 µm. The RBV ...

Ancillary

Aerospace; Satellites

Auxiliary; accessory. in remote sensing, ancillary data are secondary data, pertaining to the area or classes of interest, such as topographic, demographic, or climatological data. Ancillary data may ...

Orbital period

Aerospace; Satellites

The interval in time between successive passages (orbits) of a satellite through a reference plane. The orbital period of Landsat 7 is about 1.5 hours.