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seen and device for bestemma companies of a body in forhallande to a line of sight
seen and device for bestemma companies of a body in forhallande to a line of sight
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机译:在forhallande的尸体最佳视线公司的视线和设备
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摘要
The position of a body is determined using a beam of electro-magnetic waves directed along a sight line generally towards the body. The cross-section of the beam is changed and a sensor mounted on the body senses these changes in cross-section and from the time periods in which electro-magnetic waves are received by the sensor two signals are produced in sequence, a first signal representative of a first co-ordinate position of the body within the cross-section of the beam and a second signal representative of a second co-ordinate position of the body within the cross-section of the beam.
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