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| 引用本文： | 吕志鹏,伍吉仓,孟国杰.?????????????η???????????????[J].大地测量与地球动力学,2013,33(6):126-129. |
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| 作者姓名： | 吕志鹏 伍吉仓 孟国杰 |
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| 摘 要： | ?????????η??????????У????????????????????????????????????????????????????????????????????????????????????????????о??????????????????????????4.3????????????????????λ???????????????????????????η????????????????????????????4.3????????????????????
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| 关 键 词： | ?????? ????? ???? ?????η? ??? |
EFFECTS OF CONDITION NUMBER ON PRECISION OF GROUND ??
STRAIN CALCULATION FOR TRIANGLE METHOD |
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| Abstract: | The main factors that affect precision of strain tensor calculation by a triangular unit are triangular shape and its orientation in the coordinate system. This paper introduces the condition number of coefficient matrix and discusses its relationship with precision of strain components. The results show that the threshold value of condition number for strain tensor calculation is 4.3 so as to keep that the precision of strain components and displacement data is in same level. |
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| Keywords: | condition number ground strain precision triangle method threshold value |
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