Trigonometric vertical distancemeasurement analysis by the method of freedom setting station
Sun Yin · Beijing Surveying and Mapping · 2011
This paper elaborated the height measurement by the method of freedoms station at the midway and accuracy,and had proven this method can meet the requirements of three-order leveling precision and precision request under the definite condition,Specially suit the height measurement,such as mountain area superhighway and railroad...etc.control diagraph.