The GPS Control Measurement of a Large Area Wing Farm

The fourth-order GPS control network is established to meet requirements of primary control survey for a wind farm.According to the topographical features of the wind farm and measurement requirements,the location of GPS network points are fixed.On this basis,check survey part of the side length and elevation of the GPS control network to ensure the accuracy by combining total station length measurements and trigonometric leveling,analyze accuracy and test reliability.After these steps,the primary control network met the requirements is built.Data processing and accuracy analysis shows that the control of GPS and total station combination measurements of large area and topography complication zone has the characteristics of high precision,easy operation and so on.