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Real time Data Transfer Techniques of the Global MAGDAS Magnetometer Network

Real time Data Transfer Techniques of the Global MAGDAS Magnetometer Network. G.Maeda, S.Abe, T.Uozumi, L.M. Musafar, K.Yumoto. Presented at 2009 UN BSS & IHY Workshop 21-25 Sept, 2009 Daejeon, Korea. MAGDAS Data Volume. MAGDAS I (3 MB per day), creates about 1 GB per year.

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Real time Data Transfer Techniques of the Global MAGDAS Magnetometer Network

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  1. Real time Data Transfer Techniques of the Global MAGDAS Magnetometer Network G.Maeda, S.Abe, T.Uozumi, L.M. Musafar, K.Yumoto. Presented at 2009 UN BSS & IHY Workshop 21-25 Sept, 2009 Daejeon, Korea. G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 1/17

  2. G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 2/17

  3. MAGDAS Data Volume • MAGDAS I (3 MB per day), creates about 1 GB per year. • MAGDAS II (0.6 MB per day), creates about 0.2 GB per year. THEREFORE, THE MAGDAS ARRAY GENERATES ABOUT 42 GB/YEAR. G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 3/17

  4. MAGDAS I magnetometer • Data logger (main unit) • Cable to sensor (70m in length) 3. Fluxgate sensor G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 4/17

  5. Computer portion of the MAGDAS II magnetometer G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 5/17

  6. Right now there are 49 MAGDAS Stations Recent addition: (49) LGZ Legazpi, Philippines G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 6/17

  7. Types of Land Used by MAGDAS units in the field Observatory University campus G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 7/17

  8. Types of Internet connections used by MAGDAS in the field. Satellite regular IP IP via cellphone ISDN ADSL no Internet G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 8/17

  9. Original Telemetry Design of the MAGDAS I System (Year 2003) - Via modem and mobile satellite telephone - Via modem and regular phone circuits - Via Internet G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 9/17

  10. G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 10/17

  11. Two Challenging Countries for Real Time Data Transmission ● Philippines ● Indonesia G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 11/17

  12. TGG MUT LGZ CEB There are 5 MAGDAS Stations In the Philippines DAV G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 12/17

  13. In the Philippines MAGDAS uses Smart Bro (Internet service based on cellular telephone technology) Now over 384,000 subscribers in the Philippines Cost is about 20 USD per month G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 13/17

  14. There are 3 MAGDAS Stations in Indonesia: MND – Manado (most north) PRP – Pare Pare (central) KPG – Kupang (most south) MND Sensor KPG PRP G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 14/17

  15. Telemetry system used by MAGDAS in Indonesia was developed by L. M. Musafar (a graduate of Kyushu University but now working in Indonesia). To send data to Bandung (near Jakarta) using the country’s GSM cellphone network, there are three possible methods (according to Mr Musafar): 1. General Packet Radio Service (GPRS) 2. Short Message Service (SMS) 3. High Speed Downlink Packet Access (HSDPA) G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 15/17

  16. Eastern Indonesia Manado Western Indonesia FTP Server LAPAN Bandung Java Island Indonesia. Pare Pare Kupang Via Indonesia’s GSM cellphone network G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 16/17

  17. Thank you ! From the entire MAGDAS Project Team of SERC at Kyushu University G. Maeda - IHY Korea Workshop – MAGDAS Telemetry Slide 17/17

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