eseo - 2010 european student earth orbiter. eseo original gto orbit 2000-2008 eseo low earth orbit...
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ESEO - 2010
EuropeanStudent EarthOrbiter
ESEO original GTO orbit 2000-2008
ESEO Low Earth Orbit 2008 – today
EuropeanStudent EarthOrbiter
AMSAT 2008 subsystem requirements:
S Band TMTC Redundant transceiver
plus U/V linear transponder
plus 5.8GHz beacon
EuropeanStudent EarthOrbiter
AMSAT 2010 Payload requirements:
U/S FM Transponder
Plus U/V linear transponder
Plus STEM Payload similar to FUNcube
EuropeanStudent EarthOrbiter
AMSAT 2010 Payload specifications:
UHF receivers and monopole antenna
S Band FM tX – 3 watts to a turnstile
VHF TX 3 watts to a folded dipole
Plus STEM Payload similar to FUNcube
EuropeanStudent EarthOrbiter
ESEO - 2010
EuropeanStudent EarthOrbiter
Initial parameters:50 x2U cubesats independently built by Universities
Launch altitude <= 320km
Near polar orbit approx 79 degrees
Orbital lifetime –up to three months
teams will be provided with a standard sets of sensors (payload)
Subsystems not standardised
1U for the payloads & 1U for subsystems
Opportunity for a unique AMSAT cubesat
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
Ground Station Network & Frequency Allocation Working Group (GFWG)Initial invitees: Graham Shirville – G3VZVNeil Melville - PA9NMLars Mehnen – University of Applied Science Technikum ViennaDietmar Kubat – DLR GermanyWouter Jan Ubbels – PE3WEG - ISIS DelftHelen Page – ESA Education OfficePhil Beavis – Vega Co UKRepresentative from University of Vigo SpainCharles Swenson - Utah State University LoganReps from AMSAT organisations in USA, Germany France & Japan
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
Communication “issues”:How much data to download
Which band(s)?
Telecommanding legal requirement?
Telecommanding practical need?
Modulation methodologies? Risk of mutual QRM
Use of “spread spectrum”?
Use of time division multiplexing?
Could it use the whole 435-438MHz allocation?
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
Ground Station “issues”:How to track 50 satellites?
Initial TLE uncertainties then high drag
Link budgets?
Use of Software Defined Radio techniques?
Cost of harwdare
GENSO opportunity?
Use of GENSO MCC system or central data repository?
Centralized test / verification / certification ?
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
AMSAT/IARU “issues”:Is it a reasonable use of frequencies in the amateur satellite service?
Is a telecommand functionality needed?
How will the cubesats be named?
Frequency coordination?
How to deal with ITU Notification processes?
How would we use an Hamcube version?
How would we build a Hamcube version?
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
Provisional Mission Timeline:Application for funding from the European Commission - end 20102nd QB50 Workshop – 3rd /4th Feb 2011 (includes 1st GFWG meeting)Notification of funding outcome - May/June 20112nd GFWG meeting late June 2011
:::
Launch could be 2013/2014
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
Requests for support:
Definition of specs for, and development of, the flight hardware and software
Ditto for the ground segment
Interfacing with the University teams
Secretary and document management for the Working Group
(pls contact [email protected]!)
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research
QB50QB50, an international network of 50 CubeSats for multi-point, in-situ measurements in the lower thermosphere and re-entry research