ERS and Envisat Precise Orbit Determination


Delft Institute for Earth-oriented Space Research (DEOS) provides highly precise orbits for the European Remote Sensing Satellites ERS-1, ERS-2 and Envisat, in support of altimetric and InSAR research. The orbit files and the supporting software can be downloaded freely through this site.

Precise orbits for ERS-2 are available from launch until a few months ago, and preliminary orbits up to a few weeks ago. For the really quick needs there are the fast-delivery orbits.

For ERS-1 the precise orbits that are now available span all ERS-1 mission phases until June 1996 when the altimeter was switched off. For the later part of the mission we have some operational fast-delivery ERS-1 orbits.


What's the current status of the orbit determination and what's NEW.
Access to the orbit files.
Access to on-line utilities and supporting software.
Details of the orbit determination and its precision.
Frequently Asked Questions (FAQ)
Some frequently asked questions and their answers.
List of references on ERS orbit determination.
Some results of the ERS precise orbit determination (SLR tracking, comparisons, ...)
See who's using the DUT/DEOS orbits regularly and register yourself as a user.
Related links on ERS-1, ERS-2, applications, background information, etc.

Status | Orbits | Details | FAQ | Literature | Results |
ERS orbits | Links | DEOS Home

DEOS Home This page was created by Remko Scharroo,
It is currently maintained by Eelco Doornbos,