著者
齋藤 宏文
出版者
ロシア・東欧学会
雑誌
ロシア・東欧研究 (ISSN:13486497)
巻号頁・発行日
vol.2007, no.36, pp.72-83, 2007 (Released:2010-05-31)
参考文献数
53

This research focuses on the process by which scientific information on Soviet genetics—particularly the Lysenko Doctrine—was accepted by Japanese academic groups in the field of biological science. Nakamura (1967) studied the Lysenko Controversy in Japan and illustrated the process whereby this debate resulted in the inevitable political conflict among Japanese biologists after the conference of the Lenin All-Union Academy of Agricultural Sciences in August 1948. In order to examine the possibility of the purely scientific debate on Soviet genetics, it is necessary to investigate the various types of literatures available in the few years immediately following Japan's defeat in World War II. In addition, there are three approaches that complement Nakamura's research. First, it is necessary to measure the ideological control given to Soviet science by the Soviet Government's scientific policies, because this control directly affected the quality of information on Soviet genetics. In particular, the discussion prepared by the editorial board of the Pod znamenem marksizma in 1939 will be highlighted as the turning point of this control. Second, Western scientific literatures were the most important channel of information transfer for Japanese biologists; in this case, it is necessary to consider the acceptance of this literature and the extent to which it influenced Japanese biologists. Third, Japanese academic groups lagged behind the West in accepting information, at least in the two years after the Japanese defeat in World War II; therefore, it is interesting to compare the acceptance times between the West and Japan. In 1946, the ideological control granted to Soviet science was at its weakest, and it was at this time that western biologists accepted the most detailed literatures and wrote numerous scientific criticisms on the Lysenko Doctrine. On the other hand, at this time, Japanese biologists were still concerned with the lack of availability of scientific literatures.
著者
齋藤 宏文 水野 貴秀
出版者
一般社団法人 日本航空宇宙学会
雑誌
日本航空宇宙学会誌 (ISSN:00214663)
巻号頁・発行日
vol.56, no.651, pp.88-96, 2008-04-05 (Released:2019-04-22)
参考文献数
9
被引用文献数
3

This review describes the on-orbit results and the lessons-learned of the small scientific satellite“INDEX”(Reimei) for aurora observations and demonstrations of advanced satellite technologies. INDEX is a small satellite with 72 kgmass, and is provided with three-axis attitude control capabilities for aurora observations. INDEX was launched into a nearlysun synchronous orbit on Aug. 23rd, 2005 (UT) from Baikonur, Kazakhstan by Dnepr rocket. The INDEX satellite has beenworking satisfactorily on orbit for 29 months as of January, 2008. Three axis control is achieved with an accuracy of 0.05 deg(la). INDEX indicates that even a small satellite launched as a piggy-back can successfully perform unique scientific missions.Reimei brings a dawn of advanced small satellites. This review concludes the perspective views for small satellites.
著者
海老沼 拓史 楠 知通 阿部 俊雄 齋藤 宏文
出版者
一般社団法人 日本航空宇宙学会
雑誌
宇宙技術 (ISSN:13473832)
巻号頁・発行日
vol.8, pp.15-21, 2009 (Released:2009-08-05)
参考文献数
8

This paper describes the design and development of a dedicated GPS receiver for spin stabilized launch vehicles. The receiver is built around a commercially available low cost GPS chip set and operates an enhanced firmware specifically adapted for high dynamics applications. In order to keep tracking a sufficient number of GPS signals even during the spinning motion, we use multiple GPS patch antennas and space them equally apart each other around the cylindrical launcher body. A new signal combining scheme was developed to avoid deep fading in antenna gain pattern. This technique requires phase control to keep signals received on multiple antennas in phase with each other. A dualantenna GPS receiver was developed to evaluate the proposed signal combining algorithm. The result showed that the proposed algorithm was capable of providing stable and continuous signal tracking under a high-rate spinning motion while simple RF combining through a power combiner was failed.
著者
福田 盛介 澤井 秀次郎 坂井 真一郎 齋藤 宏文 遠間 孝之 高橋 純子 鳥海 強 北出 賢二
出版者
一般社団法人 日本航空宇宙学会
雑誌
宇宙技術 (ISSN:13473832)
巻号頁・発行日
vol.8, pp.1-7, 2009 (Released:2009-02-11)
参考文献数
15
被引用文献数
1 1

In this paper, a new standard bus system for a series of small scientific satellites in the Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS/JAXA) is described. Since each mission proposed for the series has a wide variety of requirements, a lot of efforts are needed to enhance flexibility of the standard bus. Some concepts from different viewpoints are proposed. First, standardization layers concerning satellite configuration, instruments, interfaces, and design methods are defined respectively. Methods of product platform engineering, which classify specifications of the bus system into a core platform, alternative variants, and selectable variants, are also investigated in order to realize a semi-custom-made bus. Furthermore, a tradeoff between integration and modularization architecture is fully considered.
著者
齋藤 宏文 金子 智喜 河野 宜幸 村上 圭司 國井 喜則 友田 孝久 田中 孝治 平子 敬一 中須賀 真一 白坂 成功
出版者
The Institute of Electronics, Information and Communication Engineers
雑誌
電子情報通信学会論文誌 B (ISSN:13444697)
巻号頁・発行日
vol.J104-B, no.7, pp.669-672, 2021-07-01

低高度地球観測衛星からのデータダウンリンクの高速化を目的に,シンボルレート300 Msps,64APSK変調,及び256APSK変調,左右円偏波多重方式のデータダウンリンクの軌道上実証実験を行った.64APSK変調にて2.65 Gbit/sec,256APSK変調にて3.3 Gbit/secの低高度衛星からの世界最高の通信速度が確認された.
著者
福田 盛介 水野 貴秀 坂井 真一郎 福島 洋介 齋藤 宏文
出版者
一般社団法人 日本航空宇宙学会
雑誌
日本航空宇宙学会論文集 (ISSN:13446460)
巻号頁・発行日
vol.57, no.660, pp.25-31, 2009 (Released:2009-02-17)
参考文献数
7
被引用文献数
1 2

REIMEI/INDEX (INnovative-technology Demonstration EXperiment) is a 70kg class small satellite which the Institute of Space and Astronautical Science, Japan Exploration Agency, ISAS/JAXA, has developed for observation of auroral small-scale dynamics as well as demonstration of advanced satellite technologies. An important engineering mission of REIMEI is integrated satellite control using commercial RISC CPUs with a triple voting system in order to ensure fault-tolerance against radiation hazards. Software modules concerning every satellite function, such as attitude control, data handling, and mission applications, work cooperatively so that highly sophisticated satellite control can be performed. In this paper, after a concept of the integrated satellite control is introduced, the Integrated Controller Unit (ICU) is described in detail. Also unique topics in developing the integrated control system are shown.
著者
齋藤 宏文
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. SANE, 宇宙・航行エレクトロニクス (ISSN:09135685)
巻号頁・発行日
vol.110, no.92, pp.169-180, 2010-06-17
被引用文献数
1

小型科学衛星"れいめい"は, 2005年8月に打ち上げられ,現在まで5年間軌道上にてオーロラ科学観測を行っている.重量70kg,開発経費約4億円の低価格衛星ながら,ホイール1機,磁気トルカ3機の構成ながら3分角の姿勢制御精度を達成する等,世界的に見ても高い機能を持っている.宇宙科学研究所の若手工学研究者が,衛星メーカの衛星開発とは一味違ったインハウス衛星開発を実施して達成できたプロジェクトである.高機能で,低コスト,そして5年間軌道上で動作しているという信頼性の高さを兼ね備えた実績により,平成21年度日本航空宇宙学会技術賞を受賞している.本講演では,"れいめい"衛星の成功のキーポイントであったと思われる,小型衛星搭載機器,小型衛星3軸姿勢制御技術,効率的な衛星運用技術,低コストな信頼性確保の手法を紹介する.合わせて,今後の小型衛星の展望を述べる.
著者
齋藤 宏文 MASUMOTO Y. MIZUNO T. MIURA A. HASHIMOTO M. OGAWA H. TACHIKAWA S. OSHIMA T. CHOKI A. FUKUDA H. HIRAHARA M. OKANO S
出版者
一般社団法人電子情報通信学会
雑誌
電子情報通信学会技術研究報告. SANE, 宇宙・航行エレクトロニクス (ISSN:09135685)
巻号頁・発行日
vol.100, no.465, pp.39-48, 2000-11-17

本論文は、オーロラ微細構造の観測と先端衛星技術の軌道上実証を目的とするピギーバック衛星INDEXの概要について紹介する。INDEX衛星は2002年にH2Aのピギーバックとして打上げられる事を目標に、開発中の50kg級の衛星である。フォールトトレラントな3重多数決高速CPUシステム(SH-3, 60MHz)によって、コマンド・テレメトリ処理、姿勢制御、理学データ圧縮等、衛星のほとんどの機能が制御される。姿勢制御は、0.2°以下の制御精度を目標とする3軸姿勢安定方式である。SOI宇宙用デバイス、太陽集光型高効率パドル、リチウムイオン電池、全方位アンテナGPS受信機、可変放射率素子等の、先進技術の軌道上実証を合わせて行う。