(Compensation for the description of Beijing54 coordinate system and Xian80 coordinate system The previous blog introduced the introduction of Beijing54 coordinate system and Xian80 in FME, here is a specific description. According to the definition rules of the coordinate system, these two coordinate systems define ellipsoid parameters, datum parameters and projection parameters. Taking the 75-degree band as the center longitude line and Gaussian projection as an example, the details are as follows:)
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