Martian Cartography |
Martian Cartography |
May 15 2006, 04:16 PM
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#16
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Member Group: Members Posts: 147 Joined: 14-April 06 From: Berlin Member No.: 744 |
I have recently freaked out a little bit about Martian maps of all sorts. And finally I was astonished with those highly detailed beauties that I list below. Nonetheless. some of them have huge inconsistencies (crater names) easily noticed when we compare the surroundings of Gusev crater. Enjoy:
http://www.ralphaeschliman.com/ http://planetologia.elte.hu/1cikkeke.phtml...arsmapinte.html http://pubs.usgs.gov/imap/i2782/ -------------------- |
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Mar 12 2021, 03:01 PM
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#17
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Member Group: Members Posts: 349 Joined: 20-June 07 From: Slovenia Member No.: 2461 |
On the subject of Percy's geoJSON precision. I've noticed that since the sol 20 update they started using 9 decimal places coordinates. This presupposes mm level positional accuracy.
The track line itself still uses 6 decimal places precision, or 0.1 m accuracy, which seems much more realistic. I guess mm "accuracy" comes from GIS data manipulation that uses 9 digit precison by default. |
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Mar 12 2021, 05:47 PM
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#18
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Member Group: Members Posts: 248 Joined: 25-February 21 From: Waltham, Massachussetts, U.S.A. Member No.: 8974 |
On the subject of Percy's geoJSON precision. I've noticed that since the sol 20 update they started using 9 decimal places coordinates. This presupposes mm level positional accuracy. The track line itself still uses 6 decimal places precision, or 0.1 m accuracy, which seems much more realistic. I guess mm "accuracy" comes from GIS data manipulation that uses 9 digit precison by default. The yaw_deg property is also changed to just yaw. Here is my updated map animation: https://bit.ly/PercyMAP I noticed that the provided elevation is about 1m higher than the MOLA DEM elevation at the current waypoint. Perhaps it marks the rover body but the rover reference frame is supposed to originate at ground level. [CORRECTION] I may have mixed up the way points. The MOLA and reported elevation are actually very close, at -2568.9m -------------------- --
Andreas Plesch, andreasplesch at gmail dot com |
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