Kalman filtering method is widely used in data adjustment of dynamic surveying system, whose unit variance is usually computed with innovation vector of parameters and residual vector of observations.
卡尔曼滤波方法已广泛应用于动态测量数据的处理，其单位权方差通常按新息向量和观测值的残差向量进行计算，增加了观测值残差向量的计算。
This paper describes the basic principles and specific content of error theory and surveying adjustment practice system construction, which including teaching practice and production practice.
本文首先对循环经济的实质进行了界定 ，在此基础上分析了建设循环经济的实践体系。
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