Whisk broom scanner

Source: Wikipedia, the free encyclopedia.
Visualization of how a whisk broom scanner captures imagery. The dark blue squares represent the subset of the area seen by the scanner at any given time and the lighter blue squares show previously scanned areas. The size of the subset may change between a single pixel (one square) or a spotlight (multiple squares) but the motion remains the same.

A whisk broom or spotlight sensor, also known as an across-track scanner, is a technology for obtaining

detector which collects data one pixel
at a time.

The moving parts make this type of sensor expensive and more prone to wearing out, such as in the

swath width. Because the detector is only focused on a subsection of the full swath at any time, it typically has a higher resolution than a push broom
design for the same size of scan swath.

All sensors aboard the

Landsat series of satellites used the whisk broom design until Landsat 8 which used a push broom sensor.[1]

See also

References

  1. ^ a b Shippert, Peg. "Push Broom and Whisk Broom Sensors". Exelis VIS. Exelis Visual Information Solutions. Retrieved 27 February 2015.

External links

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