Timeline for How does a spacecraft like Worldview-3 manage 29 different spectral bands? One giant filter wheel, or...?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Mar 9, 2019 at 14:59 | vote | accept | uhoh | ||
| Jul 23, 2018 at 3:30 | comment | added | Carlos N | @BobJacobsen - Yup. Even those in the know misuse the word. I'll admit it is a loose definition. And then there is "whiskbroom" to add to the confusion. Hence I prefer "scanning sensor". | |
| Jul 23, 2018 at 3:28 | comment | added | Bob Jacobsen | @CarlosN note that the pushbroom quote is from Worldview | |
| Jul 23, 2018 at 3:26 | comment | added | Carlos N | Careful with the use of the word "pushbroom". In its purest sense a pushbroom satellite uses the satellite's motion around the earth to move the line scanner. Thus your image "rectangle" is always aligned with the ground track. WorldViews, Ikonos, and OrbViews do not rely on this technique. They actively rotate the spacecraft, allowing them to scan in any direction (E-W, W-E, N-S, S-N, diagonal). Otherwise, and excellent answer. A combination of different sensors and diffraction gratings is indeed how it is done. | |
| Jul 19, 2018 at 23:31 | comment | added | uhoh | Very nice! Other examples of "pushbrooming" here and here. | |
| Jul 19, 2018 at 22:57 | history | edited | Bob Jacobsen | CC BY-SA 4.0 |
added 91 characters in body
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| Jul 19, 2018 at 22:51 | history | answered | Bob Jacobsen | CC BY-SA 4.0 |