Abstract: Aiming at the problems in timing and calculating mileage for taximeter, the method of using GNSS+INS+Odometer integrated navigation technology in terms of the taxi is put forward. Using integrated navigation technology in the process of the taxi passenger mileage and time calculation, on the one hand, can avoid the traditional mileage in the process of using odometer itself and human factors to change the actual mileage, affect the accuracy of pricing. On the other hand, the method can avoid the single odometer valuation process once appear fault, the results of mileage will appear larger error or unable valuate, etc., increasing the reliability of the taxi pricing system. The car experiment proves that integrated navigation technology applied to taxi valuation system is able to valuate taximeter mileage, timing, and such key problems as low valuation made great improvement, accuracy and reliability are improved significantly. Avoid contradiction between the passengers, taxi drivers, safeguard the legitimate rights and interests of both sides. This has played a good role in promoting the development of integrated navigation technology.

Key words: integrated navigation, odometer, valuation principle, range error rate