| 摘要 |
PROBLEM TO BE SOLVED: To reduce errors due to compression of a correction amount in which values included in a pseudo range and a carrier wave phase have the same sign and the same sensitivity, to avoid the reduction in weight of a corrected GNSS observation value in positioning computation of a receiver due to the increase in error variance value of the correction amount over time, and to suppress the reduction in accuracy of interpolation and extrapolation computation even in the case of the correction amount being largely varied with time and being obtained at long time intervals.SOLUTION: A GNSS positioning device comprises: a reinforcing information reception unit 1 which receives reinforcing information; a correction amount interpolating/extrapolating unit 3 which outputs a first correction amount for a position of a receiver; a receiver position prediction unit 4 which predicts the position of the receiver; a GNSS signal reception unit 5 which outputs a navigation history and an observation value of a GNSS satellite; a satellite position computation unit 6 which computes a satellite position; a correction amount estimation unit 7 which outputs a second correction amount for the position of the receiver; a correction amount averaging unit 8 which outputs a third correction amount obtained by weighted averaging of the first correction amount and the second correction amount; and a position computation unit 9 which uses the third correction amount and the like to compute the position of the receiver. |
