GDQM-PL 13 - the new gravimetric quasigeoid model for Poland

• Autorzy: Szelachowska M. , Kryński J.

Warianty tytułu

PL

GDQM-PL 13 - nowy model quasigeoidy grawimetrycznej dla Polski

• Języki publikacji: EN

Abstrakty

EN

The new gravimetric quasigeoid model GDQM-PL 13 for Poland was determined. The 1' x 1' mean Faye anomalies, deflections of the vertical for the terrority of Poland, gravity anomalies from the neighbouring countries and the EGM2008 were used as input data. The remove-compute-restore (RCR) method and the least squares collocation approach with the planar logarithmic covariance function of gravity anomalies were applied. Height anomalies computed from the GDQM-PL 13 have been compared with the corresponding ones obtained from GNSS/levelling control traverse. The new quasigeoid model was also compared with the gravimetric quasigeoid model GDQ08 developed in 2008 for the area of Poland, with the EGM2008, and with the most recent global geopotential model based on GOCE data. The results of the comparison were analysed and the accuracy of the GDQM-PL 13 has been assessed and discussed.

PL

Opracowano nowy model quasigeoidy grawimetrycznej dla Polski o kryptonimie GDQM-PL 13. Jako dane wyjściowe wykorzystano średnie anomalie Faye'a w siatce 1' x 1', odchylenia pionu z obszaru Polski, anomalie grawimetryczne z sąsiednich krajów oraz model EGM2008. Obliczenia wykonano metodą kolokacji najmniejszych kwadratów z wykorzystaniem strategii remove-compute-restore" (RCR). Anomalie wysokości obliczone z modelu GDQM-PL 13 porównano z odpowiadającymi im anomaliami wysokości otrzymanymi z danych satelitarno-niwelacyjnych na punktach sieci POLREF, EUVN i ASG-EUPOS oraz na stacjach kontrolnego trawersu satelitarno-niwelacyjnego. Nowy model quasigeoidy porównano również z modelem quasigeoidy GDQ08 opracowanym dla obszaru Polski w 2008 roku, z modelem EGM2008 oraz z najnowszymi globalnymi modelami geopotencjału opracowanymi z wykorzystaniem danych z misji GOCE. Wyniki porównania poddano gruntownej analizie, a następnie oszacowano dokładność modelu GDQM-PL 13.

Słowa kluczowe

EN

gravimetric quasigeoid model; least squares collocation; GNSS/levelling data; global geopotential model

PL

model quasigeoidy grawimetrycznej; kolokacja najmniejszych kwadratów; dane satelitarno niwelacyjne; globalny model geopotencjału

• Wydawca: Instytut Geodezji i Kartografii
• Czasopismo: Geoinformation Issues
• Rocznik: 2014
• Tom: Vol. 6, no. 1(6)
• Strony: 5--19
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Szelachowska M.

• Instytut Geodezji i Kartografii, ul. Modzelewskiego 27, PL 02-679 Warszawa Tel.: [phone], Fax: [phone]

autor

Kryński J.

• Instytut Geodezji i Kartografii, ul. Modzelewskiego 27, PL 02-679 Warszawa Tel.: [phone], Fax: [phone]

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