Geology, geography and global energy

Scientific and Technical Journal

Assessment of the accuracy of the network of the concentration on the example of development triangulation

2013. №4, pp. 191-198

Myachina Anastasiya A.  - Post-graduate student, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,, romashko_nastya@mail.ru

Barmin Aleksandr N.  - D.Sc. in Geography, Professor, Astrakhan State University, 1 Shaumyan sq., Astrakhan, 414000, Russian Federation,, abarmin60@mail.ru

If the density of the points of the state geodetic network (SGN) is not enough, then build a network of concentration, which are used as input to create justification for the shooting of topographic surveys. Network of geodetic stations on the ground have compiled according to her project. The practice of the measurements shows that no matter how carefully the measurements using the most precise instruments, with their multiple repetition of all the numerical values of the measured values will be different, different from each other, as each measured value contains an error. The values of the errors of geodetic measurements and methods of calculation are determined by the conditions in which the measurements are made. Therefore, they are characterized not only accuracy but also define conditions under which the results can be obtained with the required measurement accuracy. That’s why when dealing with issues related to the definition of the necessary precision geodetic and topographic data during the survey work, it is necessary to know the ways of counting errors of measurement and to determine the conditions of their occurrence, in which measurements can be performed with the required accuracy and cost. Accounting errors made on the basis of the theory of measurement errors. Reducing the impact of these errors on the final result is achieved in the process of alignment or balance. [14] In this paper, we present conditions comply accuracy of network design, assess the accuracy of the calculations are reflected in different stages of construction, as well as identify characteristics such provisions of accumulation, as the total error of initial data, the weight and value of the inverse weight underdog network, the accuracy of the basis of the parties, the error of the logarithm of the weak parties and others. The evaluation of the accuracy of the project have class triangulation network concentration.

Key words: State Geodetic Network,design of the network concentration,geodetic measurement,reverse weight measurement result,the accuracy of the basis of the parties

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