著者

山越 寿夫 片岡 巌 山越 寿夫 竹内 清 金井 康二 伊藤 泰義 植木 紘太郎 野間口 道義 綾 威雄 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所 船舶技術研究所

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.8, no.7, pp.207-208, 1971-12

著者

伊藤 泰義 井上 圭典

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.34, no.3, pp.99-140, 1997

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This paper is divided into two parts. Hie first part outline of GPS,while the second part describes the method of fixing the position ,which can minimize the effect of SA, and gives the result of an experiment that attests to the efficacy and advantage of the method. Starting with introductory remarks the first part deals with the following themes : the principle of position fix, code pseudoranges, phase pseudoranges, the kinematic method, the OTF technique, and lastly DGPS network both in Japan and the rest of the world. The second part addresses itself to the following contents: the calculating method of satellite coordinates and its examples, the relationship between the age of ephemeris and the degrees of precision of satellite coordinates, the construction of the observation equation and its solution, the relationship between the stability of the solution and the determinant of the coefficient matrix, examples of inferior precision caused by the effect of SA, and examples in which errors caused by SA are reduced. Whereas the effect of SA normally produces random variation for a fixed position with the error ranging from 50 to 150 meters, our method could reduce the amount of variation of the error by 50 % approximately. A glossary of GPS terminology is appended at the end of the paper.

著者

兵藤 知典 竹内 清 中田 正也 宮坂 駿一 金森 善彦 東原 義治 梅田 巌 木村 逸郎 山越 寿夫 高橋 善昭 古田 悠 内田 俊介 田中 義久 片岡 巌 播磨 良子 布施 卓嘉 中井 優 島村 光 大久保 正紀 田中 俊一 三浦 俊正 伊藤 泰義 西村 達雄 中村 尚司 金井 康二 山路 昭雄 植木 紘太郎 木邨 祐二 竹村 守雄

出版者

一般社団法人 日本原子力学会

雑誌

日本原子力学会誌 (ISSN:00047120)

巻号頁・発行日

vol.15, no.5, pp.312-321, 1973-05-30 (Released:2010-04-19)

参考文献数

74

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This is a report on the activities of the Research Committee on Neutron Shielding (Apr. 1970-Mar. 1973), Atomic Energy Society of Japan. The Committee studied the present status and problems in Japan and the trends in foreign countries in such fields as neutron reactor shielding, including transport calculations, duct streaming, spectroscopy, shielding optimization and cross sections for shielding calculations. Three working groups established in the Committee-Neutron Transport, Duct Streaming and Cross Section for Shielding-undertook such activities as (a) calculations of the five benchmark problems for testing computational methods in neutron transport, (b) a survey of theoretical and experimental approaches to duct streaming, and (c) intercomparison of nuclear data for particular nuclides related to shielding in data libraries such as ENDF/B-I, III, KFK-120 and -750.