Jeff Quitney
[ Link to YouTube ]
Overview – On developing the Defense Navigation Satellite (Navstar) satellite system, later known as the Global Positioning System. Public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
“Global Positioning System: "Defense Navigation Satellite Development Program" circa 1979 USAF” をダウンロード
watch – 323 回のダウンロード –