engleski

Influence of the new Croatian height system on the benchmark heights in the national levelling networks

During the last ten years there were systematic works carried out in Croatia on the realisation and implementation of the new height system. The results of these works, based on the analysis and completely new processing of the existing archive data of geometric levelling measurements, are the basis for the introduction of the new Croatian height system into official usage. As the introduction of the new height system has direct impact on the changes of national control network benchmark heights, it is necessary to determine and investigate the changes and relations between the "old" and "new" heights of benchmarks. For this purpose, the benchmark heights in the national geometric levelling control networks have been compared and analysed at the north-western part of the territory of the Republic of Croatia chosen to be representative test area. Comparison results are achieved and presented in this paper.

benchmark heights; Croatia; geometric levelling; height datum; height sy

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