4 Final Report - Emits - ESA

ESA CONTRACT No.
21096/07/NL/HE
* ESA CR( )No
ESA STUDY CONTRACT REPORT
SUBJECT
Geo-Oculus: A Mission for Real-Time
Monitoring through High Resolution
Imaging from Geostationary Orbit
*STAR CODE
No of volumes: 1
This is volume no: 1
CONTRACTOR
Astrium GmbH
GOC-ASG-RP-003
Issue 1-0
ABSTRACT:
This Final Report summarises the results of the study “Geo-Oculus: A Mission for Real-Time
Monitoring through High Resolution Imaging from Geostationary Orbit” performed from October 2007
to April 2009 and lead by Astrium GmbH in Friedrichshafen.
In the frame of the study a comprehensive survey of the potential user needs has been performed with
the result that a demand has been defined within the existing political and institutional framework for a
high resolution and high revisit mission from geostationary orbit. Out of the identified applications four
have been selected as primary mission objectives used to size a system and confirm principle
feasibility on a Phase-0 level.
Those primary objectives have been: Disaster monitoring, fire monitoring, algal bloom detection and
monitoring and water quality monitoring.
Taking the user requirements for these applications a set of mission and system requirements has
been derived and a first iteration of the payload, spacecraft and ground segment design has been
elaborated.
On the payload side the design lead to a telescope with an aperture of 1,5 m diameter and five focal
planes. The feasibility of implementing the envisaged GSD of around 10 m (at the equator) has been
confirmed. The feasibility of all selected applications has also been confirmed.
To tackle the stringent LoS requirements various techniques from disturbance suppression over image
processing and active LoS control have been studied. Also the application of image post processing
on ground with landmark detection (INR) has been considered.
On the spacecraft design emphasis has been placed on the AOCS. It has been confirmed that the
required agility of the system can be realized. It has been demonstrated that the allocated manoeuvre
time including tranquilisation is feasible which leads to an imaging capability of around 42 images per
hour for Geo-Oculus.
Finally a first iteration of the ground segment architecture has been elaborated investigating the main
challenges fast data dissemination and flexible mission planning taking into account on-demand
imaging (emergency missions) but also cloud dynamics.
The work described in this report was done under ESA Contract. Responsibility for the
contents resides in the author or organisation that prepared it.
Names of authors:
Astrium study team, lead by Astrium Study Manager Ulrich Schull
** NAME OF ESA STUDY
MANAGER:
Jean-Loup Bézy (EOP-PIO)
Earth Observation Programmes Directorate
* Sections to be completed by ESA
** Information to be provided by ESA Study Manager
** ESA BUDGET HEADING:
OUTPUT: 60 GSP
SUB-HEADING: 510 Special Studies