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| Optical Path Multiplication Measurement Based on Error Elimination Principle |
| LIU Hong-guang1,LI Qing1,LI Ling-mei1,CHEN Jie1,LI Jun-feng2,LU Rui-jun1 |
1. Tianjin Institute of Metrological Supervision and Testing, Tianjin 300192, China
2. National Institute of Metrology, Beijing 100029, China |
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Abstract Aiming at the problem of traceability of large-size laser ranging instruments, a long-distance measurement method based on error elimination principle of optical path multiplication was studied. A measurement model with error elimination characteristics was established. The system achieved four times the optical path multiplication. It has the advantages of simple structure with double range, high measurement accuracy, good measurement stability and continuous measurement. The virtual length baseline of 13m in the room was repeated and the feasibility of the measurement method was verified. The method shortens the distance between the mid-range and the baseline field to indoor completion.
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Received: 09 January 2019
Published: 01 September 2019
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2019, Vol. 40 
