FIELD: physics, navigation.
SUBSTANCE: disclosed is a positioning method for a navigation device and a navigation device. The positioning method includes steps of receiving a global positioning system signal; reading preceding position, velocity and time data; reading the preceding result of comparing with a map; and calculating current position, velocity and time data in accordance with at least one of the preceding position, velocity and time data and the preceding result of comparing with a map.
EFFECT: improved positioning.
7 cl, 8 dwg
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