Free state determination at a high precision is made by using a simpler mechanism. A vehicle position detection device is configured to: store conditional probability information which associates each of values to be taken in vehicle information on a state of an own vehicle, a matching conditional probability that the value occurs in a matching state, and a free conditional probability that the value occurs in a free state; use the conditional probability information to acquire the matching conditional probability and the free conditional probability corresponding to the acquired value of the vehicle information; calculate a probability index in the matching state and a probability index in the free state based on the conditional probabilities; and determine which state is to be selected based on the probability index in the matching state and the probability index in the free state.
VEHICLE POSITION DETECTION DEVICE AND PROGRAM
VORRICHTUNG UND PROGRAMM ZUR ERKENNUNG DER POSITION EINES FAHRZEUGS
DISPOSITIF ET PROGRAMME DE DÉTECTION DE LA POSITION D'UN VÉHICULE
2016-01-27
Patent
Electronic Resource
English
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