What is another word for dead reckoning?
Pronunciation: [dˈɛd ɹˈɛkənɪŋ] (IPA) 
Dead reckoning refers to the process of determining one's position by using a previously known location and taking into account the speed and direction of movement. It is commonly used in navigation and aviation. There are several synonyms for dead reckoning, including deduced reckoning, derived reckoning, and projected reckonings. Other phrases that are often used synonymously with dead reckoning include navigation by dead reckoning, pilotage, and celestial navigation. All of these terms allude to the process of determining one's position on the basis of calculations or predictions rather than direct observation. Despite the various synonyms for dead reckoning, the basic concept remains the same in all situations.
