![]() Published in Acta Geodaetica et Cartographica Sinica ISSN 1001-1595 (Print) Publisher Surveying and Mapping Press Country of publisher China LCC subjects Geography. Journal founded in 1957, is director of China Association for Science, sponsored by China Institute of Surveying and Mapping Surveying and Mapping Science and Technology reflects the level of development of national comprehensive academic journal, impact factor and citation frequency ranking first in Chinese core journal Surveying, China Mapping the most influential journals, Ei core journals. Fourthly, the supply-side structural reform of surveying and mapping technology and industry has been put on the agenda, breakthrough changes should be taken place in all aspects. Ps converted waves on teleseismic seismograms will be unclear due to the interference of P waves. We try to measure the splitting parameters of Ps converted waves on seismogram directly. Thirdly, in order to improve the cultural connotation of the map, it should be initiative to move closer to several aspects of the cultural and social sciences. Traditional method to study anisotropy of crust utilizes Ps-converted waves from receiver functions. Secondly, the service direction of surveying and mapping products should be expanded from human to intelligent robot. Judgement matrix based correlation analysis of detectable and locatable gross errors in observations. One example In the sixties mathematicians resunied the non-least-squares problems and have made prominent progress in robust-estimation. ![]() First, we systematically investigate the principles of the TRDSS and CRDSS positioning, and then analyze the evaluation methods in terms of their positioning accuracy, real time, and coverage range. Acta Geodaetica et Cartographica Sinica, 34(1), 24-29. Firstly, the field of surveying and mapping services has extended from the surface of the earth to the virtual multi-dimensional space (cyberspace). As published studies regarding the RDSS positioning service are few, we analyze and compare the performances of the two RDSS positioning modes. (2019) Least-square variance-covariance component estimation method based on the equivalent conditional adjustment model, Acta Geodaetica et Cartographica Sinica, -, Journal of Geodesy and Geoinformation Science (), Vol.48. Four areas that should be paid special attention are put forward.
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