【摘要】 GPS定位技术现已成为建立矿区地表首级控制网的主要手段,而GPS网平差阶段的质量控制方法是影响整个矿区测量基准精度的重要因素,因而重点对受到粗差污染的矿区GPS网平差质量控制方法进行研究。针对传统抗差模型的缺点,在标准化残差构造的抗差模型基础上,对IGGⅢ权因子函数进行改进,并提出将迭代过程中的单位权中误差改为由中位函数计算,导出了相应的抗差迭代解式,给出了GPS网平差成果的检验方法。算例结果表明:该抗差模型能够有效抵御不同形式的粗差对平差结果的影响,为高精度矿区测量基准的建立提供了更为可靠的数据源。更多还原

【Abstract】 GPS location technology has been main method for setting up surface 1st rank control mesh of mining area and quality control method of GPS mesh adjustment is a main factor influencing surveying precision of whole mining area.In order to overcome shortcoming of traditional robust model,this paper improved IGGⅢ weight factor function on the basis of robust model of standardization residual error construction,and put forward that changing unit weight error into median function in iteration.Corresponding robust iteration equation was derived and examination method of GPS mesh adjustment was present.Calculation result of examples showed that this robust model could effectively resist the influence of different forms of gross error on adjustment result and this provided reliable data resource for setting up high-precision surveying criterion of mining area.更多还原