中文摘要：

研究了GPS控制网平差模型，探讨了采用MATLAB进行GPS网三维平差的可行性，并结合GPS控制网三维无约束平差实例的结果进行分析。实例证明，基于MATLAB进行GPS网平差具有精度高、编程简单、工作效率高、平差过程清晰等优点。为解决复杂的GPS网平差计算提供了新的便捷途径。

英文摘要：

It is very important to solve fast 3D adjustment of GPS network. The paper introduced characteristics and the advantages of MATLAB programming firstly, and then introduced the GPS control network adjustment model in detail, and discussed the feasibility of GPS net adjustment based on MATLAB, and finally analyzed the result of GPS control network three-dimensional unconstrained adjustment instance. Three-dimensional unconstrained adjustment instance has been got the ideal high quality results. It has been proved that GPS net adjustment based on MATLAB is not only has high precision, but has a simple programming, high work efficiency, clear adjustment process, etc. MATLAB cannot just provide a new and convenient way for solving complex GPS net adjustment calculation in engineering, but can be applied to teaching, and it is very suitable for mastery and understanding of knowledge.