Abstract
In recent years, development of a proper country-specific height system has become a major challenge for the scholars and specialists working in the field of geodesy. The National Geodetic Services of many countries are trying to establish a new system that can provide the customers and decision-makers with high accuracy basic geodetic data obtained by modern satellite measurements. Although, Mongolia has a long tradition with geodesy and land surveying, the country still lacks a refined height system that can be effectively used for mapping and other purposes. In the present study, we tried to solve the problem related to the Mongolian height system using of a modern satellite technology. The research had some very important results: 1) evaluation of the main height network and height system of Mongolia, 2) development of a new method for calculating the normal height system in Mongolia, and 3) creation of the height unified system by considering surface potential of the global ellipsoidal level as normal.
Highlights
In Mongolia, there are a very few research studies dealing with a height system and determination of a normal-altitude based on satellite technologies
The National Geodetic Services of many countries are trying to establish a new system that can provide the customers and decision-makers with high accuracy basic geodetic data obtained by modern satellite measurements
We tried to solve the problem related to the Mongolian height system using of a modern satellite technology
Summary
In Mongolia, there are a very few research studies dealing with a height system and determination of a normal-altitude based on satellite technologies. In most post-socialist countries, establishment of such a system is mainly related to new organizational and financial requirements, occurred in the processes of geodesy, mapping and cartography due to newly developed market economy It is connected with the changes in geodetic precision and measurement technologies required for development of efficient modern satellite methods. Within the framework of this research, the rationale for solving the problem associated with the height system has been identified by the use of a modern satellite technology For this purpose, the GNSS measurements and detailed quantitative spatial model of quasi-geoid were compared with the average value of multi-year observations at the continuously operating origin point. As a result of the study, we solved the problems related to the height network and normal height system of Mongolia
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