Which method estimates position by tracking movement from a starting point?

Which method estimates position by tracking movement from a starting point?

• A. Desire paths
• B. Traveling salesman problem
• C. The Steiner Tree Problem
• D. Dead reckoning

Answer: (D)

Estimating position by tracking movement from a known starting point is dead reckoning. Start with a precise starting location, then update your estimate as you move by keeping track of the direction you travel and the distance covered (often speed × time). By projecting your position along the measured path, you arrive at a current location estimate even without external references. This method is handy when signals like GPS aren’t available, but tiny errors in speed or heading accumulate over time, causing drift unless you get occasional corrections. The other ideas don’t fit this approach: one describes informal routes people choose, another is about finding the shortest route to visit multiple places, and the last is about connecting points with a minimal network.

Estimating position by tracking movement from a known starting point is dead reckoning. Start with a precise starting location, then update your estimate as you move by keeping track of the direction you travel and the distance covered (often speed × time). By projecting your position along the measured path, you arrive at a current location estimate even without external references. This method is handy when signals like GPS aren’t available, but tiny errors in speed or heading accumulate over time, causing drift unless you get occasional corrections. The other ideas don’t fit this approach: one describes informal routes people choose, another is about finding the shortest route to visit multiple places, and the last is about connecting points with a minimal network.