Transcript Communication_TT5

Organisation of the Benin AOC ( Cotonou)
C. Peugeot/S. Galle : link with TT5, and with AMMA hyperspace
A. Borgstedt : coordination, link with AOC
J.M. Bouchez : tech. coordination
A. Dadé: secretary
Local Operation Centre in Djougou/ tasks during SOP :
Human resources, teams, parnerships with african,
Which data to transmit ..
tbd, following outcomes of the Leeds meeting
Tasks : upon request, depending on our capabilities
Support / assistance for teams,
•Site preparations, support for missions
•Design of telecommunication facilities
•Credit for SOP operation made available through IRD
(french and EU funds)
•Assistance in material shipping, custom clearence
Bénin communication - Djougou
9.9
Rain recorder
Rain bucket
Kopargo
limnigraph
Bira
Automatic piezometer
RONSARD
Daily piezometer
9.8
Meteorological station
Béléfoungou
Watershed borders
Transect (fig A1.1)
scintillometer
Nalohou
radar
Donga
9.7
Disdrometer
Djougou
VAN
VHF + UHF
Network :
Nangatchori
X-Port
Photometer
9.6
GPS
1.5
1.6
1.7
1.8
1.9
2
IDAF
0
5
10
15
20 km
Bandwidth needs considered (from PI’s feedback)
NO REAL-TIME PROCEDURES !!!
RONSARD :
200 ko every 15 minutes, if convection, idle otherwise
 800 ko/hour 
at most 20 Mo/day
NANGATCHORI:
NOx-measurements
Ceilometer/MW-Profiler/Micro Rain Radar
UHF
VHF
Total
1,5 Mo/day (compressed data)
0.15 Mo/day (not compressible)
48 Mo/day
12 Mo/day
62 Mo/day
OTHER SITES : DJOUGOU, PARAKOU(RS), COTONOU-Airport : nothing
RONSARD (Copargo)
Equipment : satellite modem R-BGAN, Inmarsat,
Bandwidth : 144 kbps, ~50 kbps effective
Cost :
Modem
External antenna + cable
Activation+ 1 year subscription
550
997
474
2022
Transmission : 6.20 €/Mo
Estimate : average of 10 Mb/day x3 months 5580
Total estimated cost (3 months)
7602 €
Funded on AOC budget (API)
To be checked : attenuation by rainfall !!
Related issue : Bi-static : real-time comm. with RONSARD
must be funded/installed by DLR team
VHF/UHF facilities and other instruments in Nangatchori
Equipment : V-SAT link (LIPTINFOR),
Bandwidth : 64/64 kbps, dedicated link recommended
Re-use of existing IRD parabola (saves some euros !!)
Cost : (euros)
Antenna head upgrade + installation
6712
UPS 1KVA
1170
Esquipment sub-total
7882
Dedicated band 64/64 : 991 €/month (recommended) – (Mesh tech.)
Shared band (p.m.) 572 €/month
8 months, dedicated link (2006) :
7928
Total estimated cost
15810 €
Funded on VHF budget (API) : missing 3800 euros for 2006 !!
Facility shared with all other instruments on the site/emissions in turn
following priorities
To be checked : attenuation by rainfall !!
Djougou (X-Port, GPS)
No transmission requests from instruments PI’s
BUT : existing INMARSAT link for the GPS station, some IP ports available
Equipment : Inmarsat M4 from Thrane & Thrane
Probably, activation of this link for the local Operation Center
Cost : equipment already funded (API)
Transmission costs : 6.80 $/min
needed : negociation with GPS PI’s ; under way
Phone communication
To be updated depending on operational needs
(e.g. location of site coordinator, scientific secretary, ..)
•Djougou (National+International lines)
• phone line (+ fax if needed) at IRD house
• phone at X-port site
• phone + fax at the hotel (backup solution)
• cell phone works well
•Nangachori and Copargo : unreliable cell phone network : limit of
coverage
3 INMARSAT satellite phones (2 lent by german IMPETUS project + 1
owned by IRD).
Flow of information (tentative !!)
Quick-looks sent to AOC-web site (automated FTP)
RONSARD
Kopargo
Sat./cell phone
GPS
Sat./cell phone
X-Port
« Rest of The World »
Phone/fax/Internet
Djougou
VHF + UHF
Other instr.
Simplified data sent to
Toulouse+AOC-web site
(automated FTP)
Nangatchori.
Quick-looks/data : sent directly from the sites.
Local OC (Djougou )
Collect from sites and transmit to AOC : instr. status ; ground data of interest,
Data needed from Parakou and Cotonou ? (under some flight paths, eg. I1.3, I.17)