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Satellite just launched by SpaceX more interesting than presented
| My best guess short summary: This Spanish sat working with the 2 German sats can do high-resolution trinocular 3D radar imaging. Since they are in the same orbit but not in the same position at the same time this would not be 3D for transient or moving objects but for static or fixed objects. The period for the 3 of them to image the same spot is 11 days so that's the transient vs fixed time delta. Or same place for 11 days (worst case if one sat is right next to the other) = 3D high res image. The phrasing of the "calibration" statement suggests the 3D scientist involved or some of his previous students. If he is involved it is correct accurate and well designed. Trinocular is much more accurate then the binocular imaging that the existing pair of sats are likely engaged in. In addition trinocular imaging requires much less computational resources than binocular and ambiguity tends toward zero for the visible surface. If one wanted full minimal ambiguity in all directions it would require the target object to be in space with a tetrahedral arrangement of imagers so this is a minimal resource, optimum solution, for a 3D image of the surface of the earth (shell). |
[Forum.NasaSpaceFlight] DLR German Aerospace Center, Corporate Communications, Linder Hoehe, 51147 Koeln, Germany -
Posted by: 3dc 2018-02-24 |
