变异系数赋权法对水准网平差定权方法的改进

Improvement of Leveling Network Adjustment Based on Variation Coefficient Weighting Method

水准网平差中通常采用按距离公里数和按测站数2种传统的定权方法,但在复杂地形中往往不能自动区分平坦地形和陡峭地形。针对以上缺点,利用变异系数赋权法对上述2种定权方法进行了综合与改进,在定权时能够充分考虑地形特点,重新分配了距离公里数和测站数的信息所占的比重,使得定权结果更加合理。经实例计算,结果表明:利用变异系数赋权法进行定权的平差结果较传统方法精度更高,并且计算简便,是一种值得推广的定权方法。

Leveling network adjustment usually uses according to the distance of mileage and according to the survey station two traditional weighting methods. But in complex terrain, they often not automatically distinguish between flat terrain and steep terrain. According to the above disadvantages, the variation coefficient weighting method for the two kinds of weighting methods were integrated and improvement in power, which could consider the terrain features, the redistribution of the distance in kilometers number and numbers of survey station information share, made the result more reasonable weighting. The results show that the use of variation coefficient weighting method for weight adjustment results compared with the traditional method with higher accuracy, and simple in calculation. It is worthy of popularization in constant weight method.