33?3??piai1ai1x??piai1ai2y??piai1li?i?1i?1i?1正规方程为?
333?paax?paay?pal?ii2i1??ii2i2ii2i?i?1i?1?i?1代入数据得
?x?1.434?45x?y?62.2解得 ????x?14y?31.5?y?2.352?v1?0.022?将x、y代入误差方程可得?v2?0.012
?v??0.016?3则测量数据单位权标准差为???pvi?132ii3?2?0.039
?d11求解不定乘数 ??d21?d11?0.022
?d22?0.072?45d11?d12?1?d12???d11?14d12?0
d22?45d?d?0??2122???d21?14d22?1解得 ?x、y的精度分别为?x??d11?0.006 ?y??d22?0.010 6.2
6.8
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