ARGOS 3 THE NEXT GENERATION Bill Woodward SAI

ARGOS 3 – THE NEXT GENERATION Bill Woodward – SAI Christian Ortega - CLS DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

TODAY’S PRESENTATION ► SYSTEM FEATURES AND CAPABILITIES ► HOW THEY CAN BE APPLIED ► LAUNCH SCHEDULE & PLANNED CONSTELLATION DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

Argos Space Segment NOAA 14 NOAA 12 Argos 1 NOAA 15 NOAA 16 Argos 2 NOAA 17 Argos 2 ADEOS II Argos 1 Argos 2+ NOAA 11 NOAA N (18) Argos 2 (February 2005) Argos 1 DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

ARGOS 3 ü HIGH DATA RATE CHANNEL - 4, 800 BITS/SEC ü TWO-WAY CAPABILITY ü HIGHER RCVR SENSITIVITY – MINUS 137 d. Bm ü WIDER BANDWIDTH – 110 KHz ü 12 PROCESSING UNITS ü NEW XMTR MODULATION DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

APPLYING THE NEW FEATURES q PROFILING FLOAT ► Surface Time Decrease: 10+ Hours 10 minutes ► Float Lifetime Extended: Xmit Only During Sat. Pass ► Send Complete 75 Level Profile in One Argos Message! ► Send 500+ Level Profile in One Satellite Pass! ► Lower Power XMTR – Shift Frequency DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

APPLYING THE NEW FEATURES q DRIFTER ► Drifter Lifetime Extended ü XMIT only when triggered ü XMIT only when satellite is overhead ► Send More/Different Data ► Lower Power XMTR – Shift Frequency DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

APPLYING THE NEW FEATURES q MOORED BUOYS ► Send large data sets (TRITON-TAO) ü 8 TRITON hourly data sets in one Argos message ü 24 data sets in a single satellite pass ► Increase lifetime, Use less batteries P XMIT only when satellite is overhead P Reduce redundant transmissions DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 Local Equatorial Crossing Time 0530 C 6 NPOESS C 3 (A 4) (A 3) ? 0930 17 NOAA NPOESS C 4 C 1 METOP (A 3) M 2 NPOESS M 3 (A 3) ? (A 3) (ADEOS 2) 1330 NOAA N 16 POES METOP (A 3) N’ C 2 NPOESS DBCP XX Scientific and Technical Workshop October 18, 2004, Chennai, India NPOESS C 5