Mapping Awareness Nov 99 Distant Sensing Traits And Purposes Ofhigh-resolution Area Imagery

floor pixel measurement of 1m of the new commercial high-resolution scanner images is equivalent to 2m in terms of their actual floor resolution. In this context, the Kell factor gives the relationship that 1 line pair (lp) is roughly equivalent to 2 pixels. (b) These scanner techniques are designed to be operated on long period missions – usually with a planned life of 3 to 5 years.

the Carter administration issued in 1978, the US authorities had restricted the bottom decision of American space imagery to 10m – as in the case of the Large Format Camera (LFC) launched in 1983. The results of the primary Russian decision was the easing of this restriction by the Reagan administration. Under Presidential Directive 23 issued in

March 1994, the development of commercial satellites producing imagery to the 1m ground pixel level was allowed. On this foundation, licences had been issued to several American-based

could additionally be present in the image. In which case, rubber sheeting methods (based on the use of polynomials) are employed to suit https://www.webku.net/system-of-the-image-motion-compensation-in-a-satellite-camera/ the picture to the map reference system.

(a) They are often operated on brief duration missions lasting two to four weeks, though the older American Big Bird (KH-9) satellites had a much larger film provide and a much longer operational life.