Original document(14 pages) Authorized document(13 pages) 中文版
    An optical nutation sensing method and apparatus is provided which is functional at low spin rates and during thruster firings while being relatively insensitive to spacecraft flexures. The advantageous operation of the present invention is afforded by provision of first and second beams of coherent light energy in opposite directions into a coil of optic fiber or other suitable means for restraining the path thereof. The coil lies in a plane normal to the transverse angular momentum vector. The beams are combined at the output ends of the coil in such a way as to create an interference pattern which varies as the satellite nutates. The variation in the interference pattern is detected by photodetector circuitry to provide an output signal representative of the nutation.
Application Number
申请号		 87104556 Application Date
申请日		 1987.07.01
Title 名称 Detecting process and device for optical nutation
Publication Number
公开号		 1016225 Publication Date
公开日		 1988.02.03
Approval Pub. Date 1991.04.10 Granted Pub. Date 1991.04.10
International Classification 分类号 G01C21/24
Applicant(s) Name
申请人		 Hughes Aircraft Co.
Address 地址
Inventor(s) Name 发明人 Valen Yaspor
Attorney & Agent 代理人 LI QIANG
More information 更  多  信  息


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