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1. 发明专利

JP2004146898A Extendable mesh antenna 审中-公开
标题翻译：可扩展的天线
公开(公告)号：JP2004146898A
公开(公告)日：2004-05-20
申请号：JP2002306639
申请日：2002-10-22
申请人： National Aerospace Laboratory Of Japan , Nec Toshiba Space Systems Ltd , Nec東芝スペースシステム株式会社 , 独立行政法人航空宇宙技術研究所
发明人： IIKURA SHOICHI , NAGAOKA NOBUAKI , YAMAGUCHI ISAO , KASAI TOKIO , IGAWA HIROTAKA , NAKAJIMA ATSUSHI
IPC分类号： B64G1/22 , B64G1/66 , H01Q1/08 , H01Q1/28 , H01Q15/20
摘要： PROBLEM TO BE SOLVED: To provide an extendable mesh antenna which has light weight, the small number of components and high reliability for extending.
SOLUTION: The mesh antenna 29 comprises at least two sets of approximately parallelepiped link mechanisms each composed of a mirror surface transversal member 10, a back transversal member 11, a central longitudinal member 12 and a peripheral longitudinal member 13, and a truss composed of a pair of skew members 14a, 14b flexible to spread and house the link mechanisms, and a fingertip operation umbrella mechanism having a compression coil spring 19 for spreading the skew members. The coil spring is mounted between an upper and lower slide links 17, 18 of the umbrella mechanism. A cable 33 is fixed at the top end to the upper slide link and the cable feed rate from a drum 32 is controlled to regulate the elevation of the upper slide link. A rotary dumper 60 fixed to the drum controls the spreading speed of the truss due to the expanding force of the coil spring.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种具有重量轻，部件数量少，扩展性高的可伸缩网格天线。网格天线29包括至少两组近似平行六面体的连杆机构，每组由镜面横向构件10，后横向构件11，中央纵向构件12和周边纵向构件13以及桁架构成由一对挠性构件14a，14b构成，其能够弹性地扩展和容纳连杆机构;以及指尖操作伞式机构，其具有用于扩展歪斜构件的压缩螺旋弹簧19。螺旋弹簧安装在伞形机构的上滑动连杆17和下滑动连杆18之间。电缆33在顶端固定到上滑动连杆，并且来自滚筒32的电缆进给速度被控制以调节上滑动连杆的高度。固定在滚筒上的旋转自卸车60由于螺旋弹簧的膨胀力而控制桁架的铺展速度。版权所有（C）2004，JPO

2. 发明专利

JP2004191329A Gps type wave direction measuring method 有权
公开(公告)号：JP2004191329A
公开(公告)日：2004-07-08
申请号：JP2002362806
申请日：2002-12-13
申请人： National Aerospace Laboratory Of Japan , 独立行政法人航空宇宙技術研究所
发明人： KASAI TOKIO , YAMAGUCHI ISAO , IGAWA HIROTAKA , HARIKAE MASATOSHI
IPC分类号： G01C13/00 , G01S19/14 , G01S5/14
摘要： PROBLEM TO BE SOLVED: To provide a GPS type wave direction measuring method which has an algorithm capable of performing automatic simple and stable wave direction analysis, by making it possible to perform wave direction analysis of a wave based on GPS positioning data.
SOLUTION: On the basis of the transverse two-dimensional displacement of a floating body such as a buoy robot floating on the wave obtained by GPS positioning, this GPS type wave direction measuring method presumes the transverse speed of the wave at approximately maximum peak points of the wave height by numerical differentiation, at a plurality of points near the peak point existing in a period of the wave specified by a zero-up crossing method. The wave direction of the wave in that period can be found from the transverse speed. The instrumentation of the direction of the sea wave does not involve artificial judgment, and objective and precise instrumentation can be performed.
COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2004205368A Multipoint strain measuring system using ofdr method 有权
公开(公告)号：JP2004205368A
公开(公告)日：2004-07-22
申请号：JP2002375302
申请日：2002-12-25
申请人： Data Science:Kk , National Aerospace Laboratory Of Japan , Natl Space Development Agency Of Japan , 宇宙開発事業団 , 有限会社データサイエンス , 独立行政法人航空宇宙技術研究所
发明人： IGAWA HIROTAKA , KASAI TOKIO , YAMAGUCHI ISAO , MURAYAMA HIDEAKI , TAKAGI SEIZO
IPC分类号： G01B11/16 , G01D5/26 , G01D5/353
CPC分类号： G01M11/3172
摘要： PROBLEM TO BE SOLVED: To upgrade a real-time property and a speed of response of a measurement by improving a data analyzing method in a multipoint strain measuring system using an OFDR (optical frequency domain reflectometry) method in which a plurality of FBGs are arranged in an optical fiber.
SOLUTION: In the multipoint strain measuring system, the plurality of fiber Bragg gratings (FBGs) which make up a periodic structure of refractive index inside the core of the optical fiber, are arranged in one optical fiber, and the measuring method (OFDR) which uses periodic changes in interferential intensity of light, is conducted. The system also has such a function that signals from the FBG on a specific position are quickly separated by using a band-pass filter with a preset bandpass range which filters out detected light signals.
COPYRIGHT: (C)2004,JPO&NCIPI

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