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| Comparative Research on the Error Correction Methods for the Experimental Data of Track Settlement |
| WANG Xi-ming |
| (China Railway Group Limited，Beijing 100039，China) |
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Abstract Abstract:Research purposes: The data obtained from the field experiment can’t Oe directly used for the statistics and analysis，so that it must go through some necessary data preprocessing first. Through the error correction of tlie measured data，it can provide more accurate and reliable track settlement data for tlie follow^ - up data analysis. In this paper，the basic principle and practical way of reference point correction method and error plane correction method are introduced. Then the two methods were used to revise the track settlement data that obtained from field experiments respectively. Finally the results that obtained from the two methods are compared and analyzed. Research conclusions:(1) Both of the two error correction methods can effectively modify the height measured data in some extent. (2) The reference point correction method has concise thinking and quick calculation， and has no additional requirements to the field experiments，but can ’ t reflect the difference of the error correction value between different observation points. ( 3 ) The error plane correction method has solved the problem that the different observation points have different error correction values，the calculating result is more accurate，but the calculation is complex，and also proposes additional requirements to the field experiments. (4) Comprehensively，the error plane correction method is better than the reference point correction method. (5 ) The research results can be applied to the error correction of tlie track settlement data obtained from the field experiment.
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Received: 06 June 2016
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2017, Vol. 34 
