Errors
Dead reckoning may give the best available information on position, but is subject to significant errors due to many factors as both speed and direction must be accurately known at all instants for position to be determined accurately. For example, if displacement is measured by the number of rotations of a wheel, any discrepancy between the actual and assumed diameter, due perhaps to the degree of inflation and wear, will be a source of error. As each estimate of position is relative to the previous one, errors are cumulative.
Read more about this topic: Dead Reckoning
Famous quotes containing the word errors:
“When people put their ballots in the boxes, they are, by that act, inoculated against the feeling that the government is not theirs. They then accept, in some measure, that its errors are their errors, its aberrations their aberrations, that any revolt will be against them. It’s a remarkably shrewed and rather conservative arrangement when one thinks of it.”
—John Kenneth Galbraith (b. 1908)
“Their errors have been weighed and found to have been dust in the balance; if their sins were as scarlet, they are now white as snow: they have been washed in the blood of the mediator and the redeemer, Time.”
—Percy Bysshe Shelley (1792–1822)
“Repent, repent, and from old errors turn!’
Who listened to his voice, obeyed his cry?
Only the echoes, which he made relent,
Rung from their marble caves ‘Repent! Repent!’”
—William Drummond, of Hawthornden (1585–1649)