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DBCP Workshop, La Jolla, October 2006 Iridium communications for data buoy applications.

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Presentation on theme: "DBCP Workshop, La Jolla, October 2006 Iridium communications for data buoy applications."— Presentation transcript:

1 DBCP Workshop, La Jolla, October 2006 Iridium communications for data buoy applications

2 DBCP Workshop, La Jolla, October 2006 Iridium overview SAMS polar experience with Iridium Recent deployments Future plans SAMS DBCP

3 DBCP Workshop, La Jolla, October 2006 Satcom systems available globally to platform operators Inmarsat D+PagerGEO< 1 kbyte/day GOES, MeteosatMessagingGEO< 5 kbyte/day ArgosMessagingLEO< 5 kbyte/day Inmarsat CMessagingGEO< 10 kbyte/day OrbcommMessagingLEO< 50 kbyte/day IridiumVoiceBig LEO1 Mbyte/hr GlobalstarVoiceBig LEO (regional) 1 Mbyte/hr Inmarsat BGANInternetGEO50 Mbyte/hr

4 DBCP Workshop, La Jolla, October 2006 Low Earth Orbit and Geostationary Earth Orbit Field of View for LEO (Iridium) and GEO (Inmarsat)

5 DBCP Workshop, La Jolla, October 2006 Typical LEO polar orbit

6 DBCP Workshop, La Jolla, October 2006 Satcom systems available globally to platform operators Inmarsat D+PagerGEO< 1 kbyte/day GOES, MeteosatMessagingGEO< 5 kbyte/day ArgosMessagingLEO< 5 kbyte/day Inmarsat CMessagingGEO< 10 kbyte/day OrbcommMessagingLEO< 50 kbyte/day IridiumVoiceBig LEO1 Mbyte/hr GlobalstarVoiceBig LEO (regional) 1 Mbyte/hr Inmarsat BGANInternetGEO50 Mbyte/hr

7 DBCP Workshop, La Jolla, October 2006 Satcom systems available to POLAR platform operators ArgosMessagingLEO< 5 kbyte/day IridiumVoiceBig LEO1 Mbyte/hr Argos: 6 sats, 400 bits/s (will increase) Iridium: 66 sats, 2400 bits/s (will increase)

8 DBCP Workshop, La Jolla, October 2006 Iridium overview

9 DBCP Workshop, La Jolla, October 2006 Iridium traffic

10 DBCP Workshop, La Jolla, October 2006 Current constellation

11 DBCP Workshop, La Jolla, October 2006 Replenishment plans Requirements and Supplier Selection Satellite R&D Satellite PDR Deploy & Launch Satellites st Launch 2 Satellites Satellite Qualification Calendar Year...

12 DBCP Workshop, La Jolla, October 2006 Iridium ballpark costs Dial-up + SBD modem: $1000 SBD-only modem: $400 Monthly fee: $14 - $30 Call costs: ~$1 per minute $0.1 per kbyte for files > few kbyte Data costs: ~$1.50 per kbyte

13 DBCP Workshop, La Jolla, October 2006 SAMS activities in polar science Role of sea ice in climate change Several polar deployments Use of Iridium, Orbcomm and Argos EU GreenIce project CryoSat validation Opportunities during IPY Development of new platforms for flux, hydrographic and meteo measurements

14 DBCP Workshop, La Jolla, October 2006 Global oceanic heat flux

15 DBCP Workshop, La Jolla, October 2006

16 dalriada.nsm.ac.uk/ php

17 DBCP Workshop, La Jolla, October 2006 Temperature record

18 DBCP Workshop, La Jolla, October 2006 Battery voltage

19 DBCP Workshop, La Jolla, October 2006 Pressure data from co-sited SVPB

20 DBCP Workshop, La Jolla, October 2006 Transfer times for 37kbyte file Mode -> 3100 bps >4000 messages

21 DBCP Workshop, La Jolla, October 2006 New suitcase buoys: GPS only

22 DBCP Workshop, La Jolla, October (‘Taladega’) SBD modem

23 DBCP Workshop, La Jolla, October 2006 dalriada.nsm.ac.uk/ CryoSat

24 DBCP Workshop, La Jolla, October 2006

25 SAMS future plans: Ice platforms for IPY Surface meteorology Vaisala WXT510 multi sensor ? SVP-B drifter as met station Net surface radiation fluxes Kipp & Zonen CNR net radiometers Heat flux through sea ice Ice mass balance Boundary layer currents Sub-ice CTDs GPS Web cam Iridium and Argos comms

26 DBCP Workshop, La Jolla, October 2006 SAMS future plans: Solar powered Iridium drifters Transparent hulls from Technocean Solar panel equatorial plane SVPB sensor fit Li-ion batteries Iridium GPS Extensive diagnostics Participation in DBCP Iridium pilot programme….

27 DBCP Workshop, La Jolla, October 2006


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