角峪铁矿普查项目采用现代大地测量的方法,利用已知的3个D级GPS点,以E级GPS控制网作为测区首级控制网,选用6个E级点构成骨架网,按照GPS网的效率、可靠性、精度,进行优化设计。在四等水准点的基础上,高程测量采用GPS拟合高程的方法。结果表明,应用此方法构造的E级控制网,精度完全符合矿区普查的需要。 Using the modern geodetic survey method, the Angleyu iron mine census uses the known 3 D-class GPS points, the E-class GPS control network as the primary control network of the survey area, and 6 E-class points to form the skeleton network. According to GPS Network efficiency, reliability, accuracy, optimized design. On the basis of the fourth-level standards, elevation measurement using GPS to fit the elevation method. The results show that the accuracy of the E-class control network constructed by this method is in full compliance with the needs of the mine survey.