On the accuracy assessment of the consecutive releases of GOCE-based GGMs over the area of Poland
PBN-AR
Instytucja
Instytut Geodezji i Kartografii
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Newton's Bulletin
ISSN
1810-8555
EISSN
Wydawca
BUREAU GRAVIMÉTRIQUE INTERNATIONAL
DOI
Rok publikacji
2015
Numer zeszytu
nr 5
Strony od-do
49-62
Numer tomu
Identyfikator DOI
Liczba arkuszy
1,3
Słowa kluczowe
en
Free-air gravity anomaly
global geopotential model
GNSS/levelling
GOCE
height anomaly
Open access
Tryb otwartego dostępu
Otwarte czasopismo
Wersja tekstu w otwartym dostępie
Wersja opublikowana
Licencja otwartego dostępu
Inna
Czas opublikowania w otwartym dostępie
Razem z publikacją
Data udostępnienia w sposób otwarty
Streszczenia
Język
en
Treść
Since ESA released to the public domain the first Global Geopotential Model (GGM) based on GOCE satellite mission data, an extensive validation/evaluation of those models has been conducted worldwide to assess their accuracy. The paper provides an accuracy assessment of 1st – 5th release GOCE-based GGMs developed with the use of the direct solution and the time-wise solution strategies over the area of Poland. Free-air gravity anomalies and height anomalies computed from those GGMs have been compared with the corresponding ones obtained from EGM08. Moreover, height anomalies determined from GOCEbased GGMs were compared with the corresponding ones obtained from three different GNSS/levelling data sets with the use of the spectral enhancement method. The results obtained reveal clear improvement for the consecutive releases of GOCE-based GGMs investigated. The 5th release GOCE-based GGM developed with the use of time-wise strategy shows the best performance. Its fit over the area of Poland to the terrestrial data in terms of the standard deviation is 0.84 mGal for gravity anomalies and in the range of 2.8 – 3.4 cm for height anomalies.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
666809