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 g3vzv@amsat.org!)

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