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北太平洋西部海域におけるGPSとロランCの相対誤差


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Title: 北太平洋西部海域におけるGPSとロランCの相対誤差
Other Titles: Relative Error between GPS and Loran C in the Western Area of the North Pacific Ocean
Authors: 久野, 俊行 / 合田, 政次 / 中根, 重勝
Authors (alternative): Kuno, Toshiyuki / Goda, Masaji / Nakane, Shigekatu
Issue Date: Dec-1993
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.74・75, pp.1-7; 1993
Abstract: In order to put a hybrid navigation with GPS and Loran C in practice, we evaluated the relative error between the position fixes obtained by simultaneous measurement with GPS and Loran C in the western area of the North Pacific Ocean. We assumed that the difference of the relative error was caused by the relation between the position fixes for the measurement and the Loran C stations. Before the evaluation, we divided the observation area into three parts (area A, area B and area C) according to the values of the 95% radial error and the distance from the slave stations. The values of the 95% radial error of area A and B were less than 1.0 nautical mile (n.m.) and the dividing line was along the line running from the master station to the halfway point between the two slave stations. In area C its value was from 1 to 2 n.m.. In areas A and B, the maximum relative error (average error+standard deviation) was less than 0.5 n.m., but in area C, it was about 1 n.m.. We may conclude that the difference of the relative error resulted from a attenuation of the signal strength and the occurrence of the lane slip because of the distance from the master station.
Keywords: GPS / gloval positioning system / 相対誤差 / relative error / 北太平洋 / North Pacific Ocean / ロランC / long range navigation C system
URI: http://hdl.handle.net/10069/29799
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第74,75号

Citable URI : http://hdl.handle.net/10069/29799

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