摘 要：gps动态定位要求建立函数模型和随机模型。函数模型描述的是观测值和待估参数之间的物理和几何关系，随机模型描述了gps观测值的统计特征，并通过观测值的方差协方差给定了每个观测值对最后的定位结果的贡献。正确给定函数模型和随机模型对于gps定位结果的估计和观测值的粗差探测均至关重要。
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