This paper introduces one practical method of free network quasi-stable adjustment applied in 2 dimension constrained adjustment of GPS control network.
According to the method, a dynamic scheme which concerns the influence of crustal movement be-tween two re-surveys on the observed elevation difference is proposed.
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该方法采用经典自由网平差和坐标转换法实现基于拟稳基准的GPS控制网2维约束平差。
This method realizes the 2 dimension constrained adjustment of GPS control network based on quasi-stable datum using classical adjustment of free networks and coordinate transformation method.