1 / 18

ARGOS SYSTEM PRESENTATION - CNES

Discover the feedback from user surveys on the Argos system and see the anticipated needs for the next-generation Argos-4. Learn about the preliminary overview of the Argos-4 system, focusing on enhancing data volumes, geolocation, and system capacity.

eberrier
Download Presentation

ARGOS SYSTEM PRESENTATION - CNES

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ARGOS SYSTEM PRESENTATION - CNES Responses to CLS User survey Synthesis of NOAA User consultation Anticipated Argos-4 needs ARGOS-3 : * System Heritage * Commissioning ARGOS-4 System : Preliminary Overview

  2. RESPONSES TO CLS USER SURVEY

  3. 1604 surveyed customers 238 replies Replies per application SURVEY CONTEXT

  4. Biologists USER SATISFACTION Argos services GLOBAL Meteo/Ocean Client support

  5. ARGOS SYSTEM METEO / OCEAN (1/2) Global Global Main users Main users

  6. SYNTHESIS OF NOAA USER CONSULTATION

  7. QUESTIONNAIRE • Distribution and Coverage • How many DCPs? Where? • Timeliness • How often transmit/receive to each DCP? • Latency requirements? • Direct read-out? • Link Reliability • Importance for transmit • Importance for receive • Throughput • How much data on each transmit / receive? • Geolocation • Use of Doppler geolocation • Use of GPS • Portability • Antenna size? • Volume and mass? • FutureTradeoffs • Argos DCS study report was issued on december 7,2005 • Questionnaire was issued to 33 people • 20 responses received : • 5 ocean • 11 biologists • 4 DCP manufacturers

  8. CONCLUSIONS • Survey responses indicate that next-generation of Argos DCS should focus on • Improving DCP transmit performance: increased data volumes with reduced size, mass and power • Improve Doppler geolocation to < 150m with a target of <50m • An order-of-magnitude improvement in data volumes and cost would make Argos DCS attractive to a new class of users • Argos system is not adapted to applications generating large amount of data per hour

  9. ANTICIPATED ARGOS-4 NEEDS

  10. NUMBER OF ACTIVE PLATFORMS IN THE SYSTEM Average growth > 12% per year

  11. NEED FOR ADDITIONAL CAPACITY Need for more than 15 Erlang capacity

  12. ARGOS USER NEEDS FOR ARGOS 4 • KEEP COMPATIBILITY WITH ARGOS-2 & ARGOS-3 PMTs • INCREASE AUTONOMY & REDUCE SIZE • Tx power drain decrease: factor 2 • Rx power drain : constant for increased capacity • Size & weight decrease : factor 2 • INCREASE DCP DENSITY: • Doubled number of platforms among which 25% are @ 4800 bps • Increase data volume transmission per pass : up to 100 kb per pass • IMPROVE LOCATION : 50 to 150 m • BETTER TIME RESPONSE : Average < 30 min • INCREASE DOWNLINK DATA VOLUME : > 1,2 kbps

  13. SATELLITE TRANSITION SCHEDULE

  14. ARGOS-4 SYSTEM: PRELIMINARY OVERVIEW (1/10) • BASIC SYSTEM CONSTELLATION • Reference constellation: NOAA-K, L, M & N • NPOESS-C1, C2 and METOP (3 main guaranteed orbits) * at equator

  15. ARGOS-4 SYSTEM: PRELIMINARY OVERVIEW (2/10) • IMPROVEMENT IDEAS • Satellite orbit control • NPOESS-C1, C2 and METOP + 1 equatorial orbit satellite * at equator

  16. ARGOS-4 SYSTEM: PRELIMINARY OVERVIEW (3/10) • IMPROVEMENT IDEAS • Satellite orbit control • NPOESS-C1, C2 and METOP + 2 equatorial orbit satellites * at equator

  17. ARGOS-4 SYSTEM: PRELIMINARY OVERVIEW ARGOS 3 Data throughput • STD + NG/400 bps: low power Tx • HD/4800 bps: 10 msgs - 50 kbits per pass Tx power: 5 W Capacity: • 12 processing units (3 HD) • 110 kHz frequency bandwidth Two-way link (400 bps) ARGOS 4 Data throughput • STD + NG/400 bps: low power Tx • HD/4800 bps: 30 msgs -140 kbits per pass Tx power: 3 W Capacity: • 40 processing units (10 HD) • 400 kHz frequency bandwidth (TBC) • Processor speed x 30 Two-way link (3 x 400 bps TBC)

  18. ARGOS-4 SYSTEM: PRELIMINARY OVERVIEW • ARGOS-4 PLANNING (TBC): • System study until spring of 2007 • Phase A study: until end of 2007 • Phase B: beginning of 2008 • First Flight Model provided in 2011

More Related