@article{oai:nagasaki-u.repo.nii.ac.jp:00009320,
 author = {久野, 俊行 and 合田, 政次 and 中根, 重勝},
 journal = {長崎大学水産学部研究報告, Bulletin of the Faculty of Fisheries, Nagasaki University},
 month = {Mar},
 note = {We measured the usable time and got position fixes from two foreign fixed stations in order to evaluate the positioning accuracy of GPS in terms of the difference in location between the stations. We received positioning signals from 6 satellites and also obtained position fixes by means of two satellites. The usable time measured at Honiara and Sydney was shorter than that measured at Nagasaki, but three-dimensional positioning accounted for 40～50% of the total time and most of the data were on a high level. We eliminated not a few data in both stations because their errors were larger than 1 nautical mile. These data accounted for 10% of the total number, especially in Honiara. There were no obvious locality differences found in 2D3 (two-dimensional positioning by means of three satellites) and 3D (three-dimensional positioning), i.e. the positioning errors in them were smaller than 0.1 nautical mile. But we observed that there were some locality differences in the usable time and the arrangement of the satellites., 長崎大学水産学部研究報告, v.67, pp.21-29; 1990},
 pages = {21--29},
 title = {GPSの測位精度-6 : 海外の二定点における測定},
 volume = {67},
 year = {1990}
}