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

DBCP Workshop, La Jolla, October 2006

Iridium communications for data buoy applications


• Iridium overview• SAMS polar experience with

Iridium• Recent deployments• Future plans

• SAMS• DBCP


Satcom systems available globally to platform operators

Inmarsat D+ Pager GEO < 1 kbyte/day

GOES, Meteosat

Messaging

GEO < 5 kbyte/day

Argos Messaging

LEO < 5 kbyte/day

Inmarsat C Messaging

GEO < 10 kbyte/day

Orbcomm Messaging

LEO < 50 kbyte/day

Iridium Voice Big LEO

1 Mbyte/hr

Globalstar Voice Big LEO(regional)

1 Mbyte/hr

Inmarsat BGAN

Internet GEO 50 Mbyte/hr


Low Earth Orbit and Geostationary Earth OrbitField of View for LEO (Iridium) and GEO (Inmarsat)


Typical LEO polar orbit


Satcom systems available globally to platform operators

Inmarsat D+ Pager GEO < 1 kbyte/day

GOES, Meteosat

Messaging

GEO < 5 kbyte/day

Argos Messaging

LEO < 5 kbyte/day

Inmarsat C Messaging

GEO < 10 kbyte/day

Orbcomm Messaging

LEO < 50 kbyte/day


1 Mbyte/hr

Globalstar Voice Big LEO(regional)

1 Mbyte/hr

Inmarsat BGAN

Internet GEO 50 Mbyte/hr


Satcom systems available to POLAR platform operatorsArgos Messagin

gLEO < 5 kbyte/day


1 Mbyte/hr

• Argos: 6 sats, 400 bits/s (will increase)• Iridium: 66 sats, 2400 bits/s (will

increase)


Network Architecture

AZ, HI or AK

InternetNIPRNET

SBD, SMS(e-mail)

RUDICSServer

IP Address

PSTN

Landline Modem

AZ, HI or AKAZ, HI or AKAZ, HI or AK

InternetNIPRNET

SBD, SMS(e-mail)

RUDICSServer

IP Address

PSTN

Landline Modem

InternetNIPRNETInternetNIPRNETInternetNIPRNET

SBD, SMS(e-mail)

SBD, SMS(e-mail)

RUDICSServer

IP Address

RUDICSServer

RUDICSServer

IP Address

IP Address

PSTN

Landline Modem

PSTN

Landline Modem

PSTNPSTN

Landline ModemLandline Modem

Dial-up Data (DAV)Direct Internet SBDSMSRUDICS

Dial-up Data (DAV)Direct Internet SBDSMSRUDICS

Dial-up Data (DAV)SMSDial-up Data (DAV)SMS

Iridium overview


Network Traffic

May 2006130,000 commercial users30,000 DoD users

Iridium traffic


Current constellation


Replenishment plans

Replenishment Program Summary

CY 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Satellite Replacement ProfileFailures 0 1 1 1 0 1 1 2 1 1 1 1 2 2 2 4 5 5 5

Original Orbit Spares 14 13 12 11 11 10 9 7 6 5 4 3 1 -1 -3 -7 -12 -17 -22Replacements 2 4 2 2 4 4 6 4

Total Spares 14 13 12 11 11 10 9 7 6 5 4 5 7 7 7 7 6 7 6Cum Replacements 2 6 8 10 14 18 24 28

Number of Launches 1 2 1 1 2 2 3 2

2008 2009 2010 2011 2012 2013 2014 2015 2016

Requirements and Supplier Selection

Satellite R&D

Satellite PDR

Deploy & Launch Satellites ...

2017

1st Launch 2 Satellites

Satellite Qualification

Calendar Year...


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


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 2007-8• Development of new platforms

for flux, hydrographic and meteo measurements


Global oceanic heat flux


dalriada.nsm.ac.uk/php


Temperature record


Battery voltage


Pressure data from co-sited SVPB


Transfer times for 37kbyte file

108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140

S1

S3

0

50

100

150

200

250

300

350

Time(s)

Mode -> 3100 bps

>4000 messages


New suitcase buoys: GPS only


9601 (‘Taladega’) SBD modem


dalriada.nsm.ac.uk/CryoSat


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


SAMS future plans:Solar powered Iridium drifters

• Transparent hulls from Technocean

• Solar panel equatorial plane• SVPB sensor fit• Li-ion batteries• Iridium 9601 + GPS• Extensive diagnostics• Participation in DBCP Iridium

pilot programme….

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

Documents

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