5 ms·
Because the direction of the offsets in the plane is at the plane's direction it is much more likely caused by the plane's speed than its altitude or the speed
by tomerico 16y ago
Because the direction of the offsets in the plane is at the plane's direction it is much more likely caused by the plane's speed than its altitude or the speed of Ikonos.
- techiferous 16y agoWhich agrees with what Luc said. Essentially he's saying that Ikonos has to factor out its own motion. Hence the only motion left that's not factored out is the plane's.
- teaspoon 16y agoNot quite. Even if the plane had zero ground speed, and the Iknonos were offsetting the four images to account for its own motion, the effect would still appear. That's because the offsets that align features on the ground will not be the same offsets that align features on a nearer plane (no pun intended), due to parallax.
- getonit 16y agoIf it was a parallax issue, there would be fringes of colour on anything tall. (The plane is very low in that image, probably going to or coming from the runway just to the southwest)
- Luc 16y agoOr this plane happens to be travelling in the direction of the satellite? EDIT: here's another plane with the same (grey, red, green, blue) sequence: http://maps.google.com/maps?oe=utf-8&ie=UTF8&gl=us&ll=33.343032,-111.960728&t=h&z=19 http://maps.google.com/maps?oe=utf-8&ie=UTF8&gl=us&#... The sideways offset seems to be roughly half as much as the offset in the direction of movement of the plane, so at least that component would be due to the sensor platform moving...
- michaelfairley 16y agoThat plane is headed straight for PHX, and isn't too far away, meaning it's probably traveling a lot slower than the other.