dead reckoning
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌdead ˈreckoning noun [uncountable] TTcalculating the position of a ship or aircraft without using the sun, moon, or stars 〔不依靠天文观测而测定船只或飞机位置的〕航位推测法
Examples from the Corpus
dead reckoning• Most of our navigation was pure pilotage and dead reckoning over unfamiliar, sometimes hostile territory and some very bad weather.ˌdead ˈreckoning nounChineseSyllable
calculating without or of ship a the Corpus aircraft position
dead reckoning
ˌdead ˈreckoning
noun [uncountable]
calculating the position of a ship or aircraft without using the sun, moon, or stars
ˌdead ˈreckoning
noun [uncountable]calculating the position of a ship or aircraft without using the sun, moon, or stars