Which process estimates one's position based on previous information?

The process that estimates one’s position based on previous information is known as dead reckoning. Dead reckoning relies on a previously determined position and uses a set of mathematical calculations to estimate the current position, factoring in variables such as speed, time, and direction. This method is especially useful when immediate position-finding tools, like GPS, are unavailable or unreliable.

For instance, in aviation or maritime navigation, dead reckoning involves calculating current coordinates based on the last known position, along with factors such as wind and currents that may affect the vessel or aircraft's path. This process is integral to navigation and ensures that even in the absence of fresh positional updates, navigators can make informed estimates of where they might be located.