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Introduction

The EPN Analysis Combination Centre (ACC) generates the daily and weekly combined EPN position solutions (SINEX format) based on inputs from EPN Analysis Centres (AC). This solution is tied to successive reference frames (in accordance with the IGS).

Official products

Weekly combined positions of the EPN tracking stations and their covariance information (based on final weekly EPN AC solutions).

Downloadable each Monday, with a delay of up to 37 (for the last day of the week) days, from:

Daily combined positions of the EPN tracking stations and their covariance information (based on final daily EPN AC solutions).

Until GPS week No 2237, downloadable from :

From GPS week No 2238, downloadable from :

Other product

Rapid daily combined positions of the EPN tracking stations and their covariance information (based on rapid daily EPN AC solutions).

Until GPS week No 2237, downloadable with a delay of one day from :

From GPS week No 2238, downloadable from :

Combination Strategy

The strategy used to generate the combined EPN position solution as well as its reference frame has evolved since the start of the EPN. A short description of the method is available from the weekly summary files (*.sum) of the combination, which are distributed through EUREF Mail (example) or in the combination reports that are sent out to the LAC's.

Details on the present combination strategy & Overview of the successive reference frames.