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AVIATR - Titan Airplane Mission Concept, Proposed unmanned aerial exploration of Titan
Juramike
post Apr 16 2010, 12:20 AM
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The AVIATR mission concept is an unmanned aerial vehicle that would fly over Titanís surface. Itís nominal one year mission would enable detailed high-resolution images of Titanís diverse landscapes for better comparison to Earthís geological processes. Selected regions could be imaged at resolutions near 30 cm/pixel, equivalent to current HiRise imaging of Mars. In addition, atmospheric sampling would allow a profile of Titanís thick lower atmosphere and how it relates to Earthís atmospheric processes and weather systems.

Further details of the AVIATR mission concept were presented at the Lunar and Planetary Sciences Conference 2010 and at Titan Through Time 2010.
See: Barnes et al. LPSC 41 (2010) Abstract 2551. ďAVIATR: Aerial Vehicle for In-situ and Airborne Titan Reconnaissance.Ē
Freely available here: http://www.lpi.usra.edu/meetings/lpsc2010/pdf/2551.pdf

And also: http://www.info.uidaho.edu/documents/2010%...18467&doc=1


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Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Greg Hullender
post Jul 13 2010, 02:33 PM
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I think I see. Part of my confusion is that, in the computer biz, when we talk about the resolution of a screen, we always just mean the pixels. So, if I understand correctly, when you guys talk about resolution, you include all the factors that could degrade the image: the pixel scale, of course, but also atmospheric noise, diffraction, probably even noise in the electronics themselves. Beyond a certain point (all other things being equal) increasing the pixel scale will not improve resolution at all. And so the dispute you two are having is not over the actual hardware being used but over the effect of these other factors?

Ralph: When you talk about doing science below the pixel scale, are you talking about making repeated observations of the same thing and computing a higher-resolution model from that? That is, you have to depend on having a static target. Or do you mean something more complex? (I may be guilty of seeing Bayesian and Markov Networks everywhere these days.) ;-)

--Greg
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rlorenz
post Jul 14 2010, 04:54 PM
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QUOTE (Greg Hullender @ Jul 13 2010, 10:33 AM) *
And so the dispute you two are having is not over the actual hardware being used but over the effect of these other factors?


I dont know what the dispute was about. As far as I am concerned there is no dispute, the resolution as normally
defined is 350m and that's that.


QUOTE (Greg Hullender @ Jul 13 2010, 10:33 AM) *
Ralph: When you talk about doing science below the pixel scale, are you talking about making repeated observations of the same thing and computing a higher-resolution model from that? That is, you have to depend on having a static target. Or do you mean something more complex? (I may be guilty of seeing Bayesian and Markov Networks everywhere these days.) ;-)


What you describe sounds a bit like how i understand 'super resolution' works. (I think with the procedure
can also be referred to as 'dithering' : it was used on Pathfinder, also on HST). Radio astronomers (with typically
low angular resolutions defined by the real aperture) use similar methods by e.g. allowing objects to pass
through the beam as the Earth or spacecraft rotate. The key is having a well-defined psf, and having a
precise enough pointing history to know where in the psf of the scene the pixels of the detector actually are.

But it can be as simple as taking an image (many pixels) of an object which is geometrically smaller than a
pixel (e.g. a star) but whose image, as defined by the telescope optical system, is much larger. The information
obtained by sampling many pixels allows you to estimate where the star was to much less than one pixel, if
the point-spread function is known. That's a nicely-posed problem for a point source like a star, the cleverness
(Maximum Entropy, Bayesian, whatever) comes in how you deconvolve that psf from the image to make a
best estimate of a more complex scene (non-point objects like planets, many stars, plus some noise).
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Posts in this topic
- Juramike   AVIATR - Titan Airplane Mission Concept   Apr 16 2010, 12:20 AM
- - Juramike   This is an artist's impression of the AVIATR a...   Apr 16 2010, 12:23 AM
- - nprev   ...niiiiiiiice!!!! Sweet image, Mi...   Apr 16 2010, 12:33 AM
|- - vjkane   Also check out http://futureplanets.blogspot.com/2...   Apr 16 2010, 06:08 AM
- - Juramike   Image showing the proposed AVIATR Titan airplane f...   Apr 20 2010, 03:14 AM
- - Juramike   Recent video showing NASA's Global Hawk UAV re...   Apr 30 2010, 01:12 PM
- - Juramike   Smithsonian Air and Space article on Titan AVIATR ...   May 20 2010, 05:35 PM
- - Juramike   Video of Jason Barnes presenting the AVIATR missio...   Jun 13 2010, 03:32 AM
- - Juramike   Future Planetary Exploration blog entry on AVIATR ...   Jun 17 2010, 01:44 PM
- - algorimancer   I'm really bothered by the very low (2 Gb) pro...   Jun 23 2010, 01:30 PM
|- - Jason W Barnes   QUOTE (algorimancer @ Jun 23 2010, 06:30 ...   Jun 28 2010, 03:51 AM
||- - algorimancer   QUOTE (Jason W Barnes @ Jun 27 2010, 10:5...   Jun 28 2010, 05:45 PM
|- - Jason W Barnes   QUOTE (algorimancer @ Jun 23 2010, 06:30 ...   Jun 28 2010, 04:07 AM
|- - rlorenz   QUOTE (Jason W Barnes @ Jun 27 2010, 11:0...   Jul 11 2010, 02:45 PM
|- - Jason W Barnes   QUOTE (rlorenz @ Jul 11 2010, 07:45 AM) H...   Jul 12 2010, 01:29 AM
|- - rlorenz   QUOTE (Jason W Barnes @ Jul 11 2010, 09:2...   Jul 12 2010, 12:20 PM
- - djellison   You're not going to get 30cm resolution from o...   Jun 23 2010, 04:16 PM
|- - Drkskywxlt   QUOTE (djellison @ Jun 23 2010, 11:16 AM)...   Jun 23 2010, 05:08 PM
|- - Jason W Barnes   QUOTE (djellison @ Jun 23 2010, 09:16 AM)...   Jun 28 2010, 04:23 AM
- - stevesliva   Note that the figure is two gigabytes, and calling...   Jun 23 2010, 04:52 PM
- - djellison   I was going from http://mars.jpl.nasa.gov/mro/ (b...   Jun 23 2010, 06:00 PM
|- - Drkskywxlt   QUOTE (djellison @ Jun 23 2010, 01:00 PM)...   Jun 23 2010, 06:25 PM
- - djellison   The internet hates me.   Jun 23 2010, 06:27 PM
|- - algorimancer   Doug, my intent wasn't to suggest 30mm/pixel r...   Jun 23 2010, 08:18 PM
- - jekbradbury   It's certainly a shame the mass spectrometer c...   Jun 28 2010, 02:59 PM
|- - Jason W Barnes   QUOTE (jekbradbury @ Jun 28 2010, 07:59 A...   Jun 29 2010, 10:15 PM
- - Juramike   AVIATR image posted in Planetaria blog: http://we...   Jun 30 2010, 04:54 PM
- - Drkskywxlt   Jason (or anybody in the know) -- What is the exp...   Jun 30 2010, 05:35 PM
|- - Jason W Barnes   QUOTE (Drkskywxlt @ Jun 30 2010, 10:35 AM...   Jul 1 2010, 08:27 PM
- - Jason W Barnes   Another point of comparison for missions' data...   Jul 9 2010, 08:30 AM
- - Greg Hullender   Forgive my ignorance, but shouldn't the resolu...   Jul 12 2010, 08:58 PM
|- - Jason W Barnes   QUOTE (Greg Hullender @ Jul 12 2010, 01:5...   Jul 12 2010, 11:21 PM
|- - rlorenz   QUOTE (Jason W Barnes @ Jul 12 2010, 06:2...   Jul 13 2010, 12:46 AM
- - nprev   Speaking as a layperson, very interesting discussi...   Jul 13 2010, 01:00 AM
- - Greg Hullender   I think I see. Part of my confusion is that, in th...   Jul 13 2010, 02:33 PM
|- - vjkane   Properly speaking, resolution should be interprete...   Jul 13 2010, 09:08 PM
|- - rlorenz   QUOTE (Greg Hullender @ Jul 13 2010, 10:3...   Jul 14 2010, 04:54 PM
- - Juramike   Artists impression of AVIATR aeroshell and parachu...   Sep 7 2010, 03:58 AM
- - Juramike   Artistic impression of AVIATR Titan Airplane over ...   Sep 28 2010, 03:28 AM
- - Juramike   Reworked some of the AVIATR images with the latest...   Jun 10 2011, 01:11 AM
- - Juramike   Link to OPAG AVIATR mission presentation slides by...   Nov 19 2011, 06:16 PM
|- - ngunn   Some of your images there Mike? Don't be shy...   Nov 19 2011, 10:58 PM
- - nprev   Nice. I'd like to see this one fly (literally)...   Nov 20 2011, 12:23 AM
|- - Jason W Barnes   QUOTE (nprev @ Nov 19 2011, 06:23 PM) Onl...   Nov 24 2011, 01:39 AM
- - stevesliva   Uses an ASRG now. First nuclear plane. That...   Nov 20 2011, 03:53 AM
- - nprev   Ah! Thanks, Jason; feelin' warmer & fu...   Nov 24 2011, 01:59 AM
- - Mongo   I wonder if, instead of a virtually financially im...   Nov 26 2011, 02:35 AM
|- - Paolo   QUOTE (Mongo @ Nov 26 2011, 03:35 AM) I a...   Nov 26 2011, 05:07 PM
|- - vjkane   QUOTE (Mongo @ Nov 25 2011, 06:35 PM) I w...   Dec 24 2011, 09:46 PM
- - vjkane   Your idea of a number of lower cost missions has b...   Nov 26 2011, 05:00 PM
- - nprev   Guys, in the name of keeping this thread on topic,...   Nov 26 2011, 05:09 PM
- - Jason W Barnes   The AVIATR team has published a paper about the mi...   Dec 23 2011, 11:25 PM
|- - vjkane   Jason - Has your team every looked into including...   Dec 24 2011, 06:02 AM
- - stevesliva   Interesting that the Mongolfiere requires an MMRTG...   Dec 24 2011, 02:43 AM
- - Greg Hullender   We're looking far enough in the future that la...   Dec 25 2011, 07:13 PM
- - nprev   (sigh)...Guys, once again, please keep this thread...   Dec 25 2011, 10:26 PM
- - Juramike   AVIATR mission concept written up in Universe Toda...   Jan 3 2012, 02:06 AM
- - Juramike   space.com article: http://www.space.com/14191-tit...   Jan 11 2012, 04:48 PM
- - nprev   Great write-up & illustrations. Congrats, Jaso...   Jan 11 2012, 06:22 PM


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