The normality of locus/being the manner which decides abnormality on the basis of the abnormal decision

摘要

PROBLEM TO BE SOLVED: To provide an abnormality determination method and program for mobile body locus information, capable of discovering abnormal data from among the mobile body locus data obtained from the sensor and capable of eliminating abnormal values.;SOLUTION: A 1st distance is calculated, on the basis of the position of a locus to be determined and the position of the previous locus, while obtaining the running locus data from the vehicle 2, and a 2nd distance is calculated by multiplying the velocity at the locus of the previous locus or at the locus which is about to be determined, with the time difference between the acquisition time of day of the locus going to be determined and the acquisition time of day of the previous locus. The difference between the 1st distance and the 2nd distance is compared with the threshold; and if the difference between the 1st distance and the 2nd distance exceeds the threshold, abnormality decision in the locus data 12 is conducted. By eliminating the abnormal values of the locus data, based on the correct locus data, estimation of traveling route or the estimation of linked traveling time can be performed by the map-matching method.;COPYRIGHT: (C)2005,JPO&NCIPI