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MSL statistics, Odometry progress and other figures
dilo
post Sep 6 2012, 05:37 PM
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After first month on Mars, I think it's time to start a topic similar to MER one...
First odometry plot to start:
Attached Image


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climber
post Sep 10 2012, 08:42 PM
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Thank you dilo! I was about to send you a PM to know when we'll opened up this topic smile.gif
As Curiosity jumped one step (from nil to n°8 position), I put this uptade in MSL's.
I also changed the second title from "from landing base" to "from landing place" since the term was no longer the right one.
I have no means where I am to check Oppy's distance to the landing place but I guess she get closer to Eagle since sol 2654 instead of further. If I'm wrong I'll correct it later unless someone give me the info. Thanks.

Actual total odometry
1. Lunokhod 2 37.00 km
2. Apollo 17 rover 35.89 km
3. Opportunity (3056) 35.02 km
4. Apollo 15 rover 27.76 km
5. Apollo 16 rover 26.55 km
6. Lunokhod 1 10.50 km
7. Spirit 7.73 km
8. Curiosity (29) 0.11 km
9. Sojourner 0.085 km

Actual maximum distance from landing place
1. Opportunity (2743) 19.48 km
2. Lunokhod 2 14.39 km
3. Apollo 17 rover 7.2 km
4. Apollo 15 rover 5.0 km
5. Apollo 16 rover 4.6 km
6. Spirit 3.62 km
7. Lunokhod 1 2.26 km
8. Curiosity (29) 0.08 km
9. Sojourner 0.01 km


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dilo
post Sep 10 2012, 09:03 PM
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QUOTE (climber @ Sep 10 2012, 09:42 PM) *
(BTW you mean "similar to MER", I guess).

Corrected, thanks!

About Oppy maximum distance from landing point, using Theseiner map on Google Earth I found 19.48 km on Sol2703 (Chester lake).


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climber
post Sep 11 2012, 01:25 AM
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QUOTE (dilo @ Sep 10 2012, 11:03 PM) *
Corrected, thanks!

About Oppy maximum distance from landing point, using Theseiner map on Google Earth I found 19.48 km on Sol2703 (Chester lake).

Thanks, also corrected


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dilo
post Sep 29 2012, 05:16 AM
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Cannot wait the end of the month...
Attached Image

2nd plot on picture statistics is based on figures reported on top of MSL "row images" pages and should include also thumbnails...


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dilo
post Oct 30 2012, 08:59 AM
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Update:
Attached Image


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dilo
post Nov 29 2012, 04:32 PM
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Update:
Attached Image


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dilo
post Dec 26 2012, 08:56 AM
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Update:
Attached Image



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dilo
post Jan 20 2013, 09:59 AM
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This time I used the "drive log" in the excellent "Curiosity Rover raw Image browser" for a new plot containing also elevation (referred to Bradbury station) and "instant" speed (actually, average speed during each single drive):
Attached Image

UPDATE on Jan,25: I added last drive (#42)
LAST UPDATE on Feb,24


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jmknapp
post Jan 21 2013, 06:21 PM
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It's tempting to think of the descent as going down a series of terraces.


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djellison
post Jan 21 2013, 06:23 PM
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Of course - that's a plot against time, not distance. But I think we would see a stair-step entering the Yellowknife Bay area.
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dilo
post Jan 22 2013, 09:43 PM
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QUOTE (djellison @ Jan 21 2013, 07:23 PM) *
Of course - that's a plot against time, not distance.

This plot confirms Doug's words:
Attached Image


PS: Further update on the odometry plot above highlight drive transitions.


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PaulH51
post Feb 4 2013, 12:38 PM
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Hi all,

I have searched through this thread as well as the internet and can not locate any statistics from the REMs weather station package on the MSL rover. I use the marsweatherdotcom page but this only provides selected information (max / min etc). If anyone knows where I can find the detailed archives or the site where I can see a wider range of raw data I would be eternally grateful.

TIA, Paul


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dilo
post Feb 23 2013, 09:23 PM
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New Odometry/pictures plots, based solely on JPL-MSL press release info:
Attached Image


In the meantime, I noticed Odometry fugures in the drive log were retouched (-1%) and now they are consistent with cumulative drive distance; perhaps, original NAIF data files were somehow refined (see updated plot above)


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jmknapp
post Feb 25 2013, 09:16 PM
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Yes, I fixed the drive log page so there's no longer a discrepancy between the odometer reading and the sum of the individual drives.

One thing that's kind of interesting philosophically though is how to exactly measure distance in the first place. The actual path of a point on the rover (say, the MSL_ROVER frame origin) in the "real world" can be quite complicated, akin to a fractal on smaller and smaller scales. For instance, say the whole vehicle is vibrating--intuitively we wouldn't want to count that toward an odometer reading, but it is moving!

My code samples the rover position as given in the NAIF data every second. I take the x,y and z coordinates of the rover and get the distance from the prior sample. Sampling at different intervals could well give different results, although probably not too different, particularly with somewhat idealized NAIF data.


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