Making driving Spirit more difficult than the average rover is the fact that commands take up to twenty minutes to reach her, and as long again for the results of a drive command to be returned to Earth. (Can you imagine trying to free your 4-wheel drive on Earth with that restriction?!) Plus, due to satellite limitations, Spirit’s drivers can only communicate with her twice a day. While Spirit can be told to drive to a certain location, such as a given bearing and distance away, due to wheel slippage, obstacles or other factors, the rover may end up in a slightly different location than expected. If multi-step navigational commands are sent at one time, and the first step is off, the final result may be quite different than desired.
(Visited 16 times, 1 visits today)