The construction of an independent coordinate system based on CGCS2000(2000 National Geodetic Coordinate System)is a new requirement for urban planning and expansion,as well as urban-rural coordinated development in China's new era.Combining project examples,this study conducts in-depth analysis and research on projection deformation calculation and commonly used methods for establishing independent coordinate systems.It demonstrates a method for constructing independent coordinate systems based on CGCS2000,leveraging the high-precision advantages of the geocentric coordinate system to enable independent coordinate system creation and result conversion.Furthermore,this study develops a graphical analysis program for projection deformation to make deformation analysis more intuitive,accurate,and fast.
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