ARGOS-3/4

Pilot Projects

Dedicated to Met-Ocean Applications

Satellite Network

EUROPE / EUMETSAT

USA / NOAA

INDE / ISRO

NOAA IJuillet 1993

NOAA JDéc. 1994

NOAA K05/1998

NOAA L09/2000

NOAA M 06/2002

NOAA N 05/2005

NOAA N’2009

NPOESS C101/2013

METOP-A10/2006

METOP-B2011

METOP-C2015

SARAL2010

ARGOS 1 ARGOS 2 ARGOS 3

ARGOS 3

ARGOS 3

ARGOS 4

ARGOS Instruments in Operations

NPOESS C212/2015

Argos-3/4 PP

The purpose of creating Argos-3/4 Evaluation Pilot Projects is to

• i) independently and objectively evaluate Argos-3 for use by the global Met-Ocean community,

• ii) foster Argos-3 integration by manufacturers, and • iii) provide Argos-3 equipped in-situ tools to the

community for evaluation (CLS provides SVP and floats)

Argos-3 PP - Drifters

• DBCP 2008 in Cap Town,• 4 Manufacturers involved: Clearwater, Pacific, Gyre,

Metocean, Marlin Yug,• Buoys produced, tested via satellite and deployed• Hourly Sensor Data collection recovery: > 95%,• About 90% of power supply saving on Tx,

A typical Argos-3 buoy integration

MET – SVP B ID 82276

MET – SVP B ID 82276

Clearwater/ Deployed by IMEDEA Med. Sea - SVP BG 82233

ClearSat-15-III drifter

Deployment South of Majorca

Argos-3 SVP BG - ID 82233Argos-2 SVP - ID 94128

Argos-3 performances

Argos-3 PP - Floats

• Ifremer / Webb Research and University of Washington already involved

• 11 floats will be produced, and deployed• Goals:

– High Sensor Data collection recovery performances,– Higher data volume with secure transmissions (handshaking),– Reduction of the surfacing duration,

Approach # 1

Float Pops-Up

Tx

Rx: OFF Is th

ere

a sa

telli

te

over

-hea

d?

Rx: ON

$ NolockRx: ON $ Nolock $ Nolock

Transmissions of Low Resolution profileTr: 50 to 60 sec.

(Each message is different)

$ lock $ lock

Argos-3 satellite pass

Op

en s

essi

on r

eque

st

Go

!U

ser

mes

sage

1

AC

K m

sg1

Use

r m

essa

ge 2

AC

K m

sg2

Use

r m

essa

ge 3

AC

K m

sg3

M1

M2

M3

M4

M5

M6

End of transmissions of Low ResolutionProfile if needed then transmission of

High resolution profile if decided by FA

………………..

3 min

1 sec.

Approach # 1• Less time on surface (16 msgs, N=3, Tr: 30 sec.)

Approach # 2

DeploymentDay: D

Parking depth

X0 days(setting)

Y days

Rendez-vous in Y days

Z days

Rendez-vous in X0 days(optional)

Rendez-vous in Z days

Surface

Profiling depth

15

-min

ute

sa

t. p

ass

15

-min

ute

sa

t. p

ass

Up to 80 messages Tx and ACK by satellite

Approach # 2

We focus on a surfacing duration < 30 minutes

Improvements for floats

• High performance for collecting hourly sensor acquisitions• Reduction for the surfacing duration• Large reduction of the power consumption allowing Tx of more

sensor information in a secured and robust,• Optimization of the transmission leading to a better use of the

satellite network and then better performances for users,• Secured Tx (check sum control),• Remote command to potentially change the mission,