| 摘要 |
PROBLEM TO BE SOLVED: To enhance precision by correcting a positional data based on a DOP value even under a moving condition. SOLUTION: This GPS navigation system has a receiving unit 2 for taking a signal from a positioning satellite for GPS in with a fixed timing to compute the positional data of a moving body, and for computing the DOP value in the timing to be output, and a controller 3 for averaging a summed-up momental position data Z provided by multiplying momental position data D1-D4 in the plural timings T1-T4 from the receiving unit 2 with respective countings K1-K4 found based on the respective DOP values in the respective timings to find an average value thereof as a corrected positional data P. |
