Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Zbigniew Wiśniewski"'
Autor:
Zbigniew Wiśniewski, Waldemar Kamiński
Publikováno v:
Sensors, Vol 20, Iss 14, p 3913 (2020)
This paper proposes a method for determining the vertical deformations treated as random fields. It is assumed that the monitored surfaces are subject not only to deterministic deformations, but also to random fluctuations. Furthermore, the existence
Externí odkaz:
https://doaj.org/article/e433b4ddff78418f970a034724053386
Publikováno v:
Sensors, Vol 19, Iss 22, p 5047 (2019)
Sets of geodetic observations often contain groups of observations that differ from each other in the functional model (or at least in the values of its parameters). Sets of observations obtained at various measurement epochs is a practical example i
Externí odkaz:
https://doaj.org/article/8c093e681fce4f1e85b7e128c3593c48
Autor:
Zbigniew Wiśniewski
Publikováno v:
Journal of Geodesy. 96
Msplit estimation is a method that enables the estimation of mutually competing versions of parameters in functional observation models. In the presented study, the classical functional models found in it are replaced by errors-in-variables (EIV) mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::980b3d4c4420aaf174e6a666447d1084
https://doi.org/10.1007/s00190-022-01668-z
https://doi.org/10.1007/s00190-022-01668-z
Publikováno v:
Journal of Applied Geodesy. 15:87-104
The paper presents Msplit estimation as an alternative to methods in the class of robust M-estimation. The analysis conducted showed that Msplit estimation is highly efficient in the identification of observations encumbered by gross errors, especial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0fb662ccf3fb7cdf500dc828555989f
https://doi.org/10.1515/jag-2020-0009
https://doi.org/10.1515/jag-2020-0009
Autor:
Zbigniew Wiśniewski, Robert Duchnowski
Publikováno v:
Studia Geophysica et Geodaetica. 64:153-171
This paper concerns squared Msplit(q) estimation and its robustness against outliers. Previous studies in this field have been based on theoretical approaches. It has been proven that a conventional analysis of robustness is insufficient for Msplit(q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b990f50a8c9c758c9c5d65a9349b8915
https://doi.org/10.1007/s11200-019-0356-y
https://doi.org/10.1007/s11200-019-0356-y
Publikováno v:
Survey Review. 53:263-279
This paper proposes methods for the determination of covariance matrices of Msplit(q) estimators. The solutions presented here allow Msplit(q) estimation to be supplemented by the operations from t...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fca5f7b69fbf87995ca801efe59936f
https://doi.org/10.1080/00396265.2020.1733817
https://doi.org/10.1080/00396265.2020.1733817
Autor:
Krzysztof Karwowski, Zbigniew Wiśniewski, Andrzej Wilk, Piotr Chrostowski, Władysław Koc, Paweł Dąbrowski, Cezary Specht, Krzysztof Czaplewski, Mariusz Specht, Jacek Szmagliński
Publikováno v:
TransNav: International Journal on Marine Navigation and Safety of Sea Transportation, Vol 13, Iss 4, Pp 895-900 (2019)
Satellite measurement techniques have been used for many years in different types of human activity, including work related to staking out and making use of rail infrastructure. First and foremost, satellite techniques are applied to determine the tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1cbae5cda6874d976fe3940945d24249
Autor:
Zbigniew Wiśniewski, Robert Duchnowski
Publikováno v:
Studia Geophysica et Geodaetica. 63:390-417
Msplit(q) estimation is a development of M-estimation which is based on the assumption that a functional model of observations can be split into q competitive ones. The main idea behind such an assumption is that the observation set might be a mixtur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60b6698290067cff86646ba595866e11
https://doi.org/10.1007/s11200-018-0548-x
https://doi.org/10.1007/s11200-018-0548-x
Autor:
Zbigniew Wiśniewski
Publikováno v:
Geodesy and Cartography, Vol 66, Iss 1, Pp 117-135 (2017)
MPestimation is a method which concerns estimating of the location parameters when the probabilistic models of observations differ from the normal distributions in the kurtosis or asymmetry. The system of Pearson’s distributions is the probabilisti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::709dfd94b507c58013f48d7ff27de125
https://doi.org/10.1515/geocart-2017-0001
https://doi.org/10.1515/geocart-2017-0001
Publikováno v:
Sensors
Volume 19
Issue 22
Sensors, Vol 19, Iss 22, p 5047 (2019)
Volume 19
Issue 22
Sensors, Vol 19, Iss 22, p 5047 (2019)
Sets of geodetic observations often contain groups of observations that differ from each other in the functional model (or at least in the values of its parameters). Sets of observations obtained at various measurement epochs is a practical example i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d99d5b503d7eb6049fb17ad19b64d1ba