The procedures of GNSS-equipment accuracy testing are considered in the aspect of the matter of predicting the earth’s crust movements and deformations when substantiating the geoecological safety of highly radioactive waste disposal in geological formations. For verification, the 1st category reference basis of the Federal Scientific-Technical Center for Geodesy, Cartography and Spatial Data Infrastructurе was used. The experiment was performed with a two-system GNSS equipment of the geodetic class. The session of simultaneous observations at the points of the reference basis lasted 4 hours. A special technique is proposed for assessing the contribution to the total error of each measuring equipment set. The technique is based on the well-known procedure of determining the basis lengths from linear measurements in all combinations using the least squares method. Estimates of the GNSS measurements accuracy for simultaneous observing two global navigation systems GLONASS and GPS are obtained. The root-mean-square error of the contribution to measuring the baseline vector length of one equipment set was 2,9 mm.
Describes a device and methods for automated laser comparator for calibration of digital leveling equipment. The comparator created by the technology of the Finnish Geodetic Institute and placed in the building of the geodetic calibration laboratory of geodetic polygon of FSBE “Centre of geodesy, cartography and SDI”. Shows the main technical characteristics, modes of operation and basic procedures in the calibration of bar-code leveling rods. It is noted that the comparator is a complex measuring system in the form of high-precision optical-electronic stand, consisting of individual mechanical, optical and electronic components and assemblies. One of the features of the design of the comparator is the vertical positioning of its component parts, which allows to determine the error of position of the strokes of the scale of the rod in a working position. Based on the results of verification receive corrections to readings on a rod scale and a linear coefficient of expansion of the material from which rod is made. Lists the possible measurement errors in the verification process and the peculiarities of metrological assurance of operation of the comparator. Formulated one of the immediate tasks in the testing of the comparator
The article deals with the issues of standardization in the field of geodesy and cartography at the present stage. The matters of planning and developing draft national standards in the Russian Federation were highlighted. Information is provided on the process of development and approval of the annual National Standardization Program. The activities of technical committees for standardization in the field of geodesy, cartography and spatial data are described. The analysis of development and approval of national standards in the mentioned field in the Russian Federation over the recent 7 years was provided. The issues of information support of the national standardization system were highlighted. Examples of draft national standards development were presented. Proposals to increase the annual number of draft national standards for geodesy, cartography and spatial data were presented.
The principles applied in the complete revision of wholesale prices for map products and map industry services which become effective on January I , 1990 are examined. The entire way in which map industry business is to be conducted is undergoing revision, with many of the changes anticipated and in progress being described. Contractual arrangements will be used much more frequently than in the past and the relevant types of products and services are enumerated. Quality control and cooperation with foreign mapping organizations are to undergo radical changes as well. Translated by Edward Torrey, Alexandria, VA 22308 from: Geodeziya i kartograjiya, 1989. No. 5, pp. 15-19.
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