[X] My Assistant

[Tman]

If they get Oppy rescue from his awkward position, what could they do to beware he of such a thing in future?

Have anyone a notion if they could gage the electric power consumption of each motor? If so, I think, they must get a suddenly change in consumption by slippage of a wheel, because of a change of the power consumption by less resistance - I think it becomes lower then.

[djellison]

Autonav is not the same as Visual Odometry

Auotnav takes a stereo hazcam pair - checks for hazards, continues driving, checks for hazards, continues driving, checks for hazards, continues driving, checks for hazards.

Visual Od has been used a few times to line the rover up infront of an IDD target - it takes hazcam images, identifies key features as identified on the ground, and drives until they match the positions requested by the ground. It was used in Eagle crater I believe.


Just to check I hadnt gone mad...

"Spirit began sol 178 by stowing the robotic arm and then backing up 1.5 meters (about 5 feet) from "Hank's Hollow" in order to properly place the miniature thermal emission spectrometer to get a good view of "Pot of Gold" and nearby rover tracks.

Engineers also took this opportunity to use visual odometry for the first time on Spirit. This is a technique in which the rover takes successive images of its surroundings during a drive and then matches features in those images on-board to compute how far and in what direction it has moved." - It had been auto-naving for almost 5 months by this point.





It aint autonav

the VisOd Navcam work that has been done has been done in areas of high slippage (Burns Cliff, climbing to Larry's Lookout etc) - and whilst I'm unsure of the exact data-volume burden - these have always been short drives of a few metres and not the 50-100m+ Autonav drives that Spirit and Opportunity have both managed.


Doug