Spatial error correlation of GPS atmospheres as determined from simulations

Autor:	Gunnar Elgered, Per Jarlemark, Lubomir Gradinarsky, Borys Stoew, Jan M. Johansson
Rok vydání:	2001
Předmět:	business.industry Position (vector) Monte Carlo method Global Positioning System General Earth and Planetary Sciences Satellite Kalman filter Antenna (radio) business Geodesy Precise Point Positioning Signal Mathematics
Zdroj:	Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy. 26:451-456
ISSN:	1464-1895
DOI:	10.1016/s1464-1895(01)00082-5
Popis:	We have made Monte Carlo simulations in order to quantify the influence of several error sources on the atmospheric delay derived in our regular “Precise Point Positioning” analysis of GPS data. Satellite position and clock errors were found to be the greatest sources of error. The RMS size of the atmospheric delay error due to these sources is suggested to be 4–8 mm, and the correlation of the delay error over 1000 km is 0.5-0.7. In our real-time analysis of the atmospheric delay satellite orbits and clock offsets are modelled in the Kalman filter. The modelled errors suggest an uncertainty in the atmospheric delay of 10–13 mm, and a decrease in the correlation coefficients to about 0.65 over a distance of 1000 km. For both the Precise Point Positioning and the real-time analysis the influence from antenna signal scatter will give additional error contributions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::11c6342a4c7c3a3cc558a487460a7d23 https://doi.org/10.1016/s1464-1895(01)00082-5 Zobrazit plný text záznamu Full Text from ScienceDirect