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Brief description of the correction of the transverse defocus paraboloid and a corresponding device of the correction of parabolic antenna
Brief description of the correction of the transverse defocus paraboloid and a corresponding device of the correction of parabolic antenna
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机译:横散焦抛物面的校正的简要说明和抛物面天线的校正的相应装置
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摘要
A correction method for transverse defocussing of paraboloid oriented relative to the source initially aligned with the focus consists of securing said paraboloid to first platform, articulating said first platform through hinge means jointed to second platform, itself articulated through further hinge means jointed to a stationary part, and then orienting said hinge means to said focus, while providing moving means for said platforms, said moving means being servocontrolled responsive to pointing error detector thereby to hold permanently said focus close to the source. Provision is also made of a parabolic antenna comprising means for carrying out said method. The system is applied to radio and TV broadcast apparatus aboard satellites.
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