1. Pirada Techavijit ptechavi@eoc.gistda.or.th ptechavi@eoc.gistda.or.th Ravit Sachasiri ravit@eoc.gistda.or.th ravit@eoc.gistda.or.th GISTDA

2. Public Organization Public Organization Responsible for: Responsible for:  remote sensing  space technology Operates Thailand Earth Observation System (THEOS -> Thai Chot) Operates Thailand Earth Observation System (THEOS -> Thai Chot) first Thai earth observation satellite first Thai earth observation satellite Thai Chot was launched on 1 st October 2008 Thai Chot was launched on 1 st October 2008 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

3. Taiwan’s civilian space agencyTaiwan’s civilian space agency Established in October 1991Established in October 1991 Involved in the several areas including:Involved in the several areas including: development of space explorationdevelopment of space exploration satellite construction and developmentsatellite construction and development research in aerospace engineeringresearch in aerospace engineering remote sensingremote sensing Sciences such as Astrophysics, atmospheric science, information science and defenseSciences such as Astrophysics, atmospheric science, information science and defense FORMOSAT-2 FORMOSAT-1 FORMOSAT-3 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

4. Cooperation Project Technical Workshop/Training Image Sharing Remote System management Satellite/Ground Anomaly Management Post-maneuvers evaluation Instrument Calibration and Evaluation Technical Assistance 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

5. Cooperation between GISTDA and NSPO  NSPO’s engineers visited GISTDA in 2010  Observe current system  Agreement on requirements and setup of communication channel 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Cheingmai

6. Remote System Management (Ground Sharing)  Increase system reliability  Co-operation with NSPO due to similarity of satellite system 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

7. Remote System and Anomaly Management  Setup of VPN connection between the two sites  Two parallel tunnels over different networks  The secure channel allow remote system management  Satellite anomaly and Ground system anomaly statistics and details are shared 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

8. Joint Programming 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai  Increased shared value  Decrease time between acquisition  Better response to emergency situation

9. Disaster Response 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

10. Technical assistance/workshop  Both organizations share their core competences  Done both in person and remotely  Remote assistance and workshop includes:  E-learning  Online training  Remote Access over secured network to sensitive equipments  Exchange of information 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

11. Topics for Technical Workshop Training Course  Degradation trend and parameter adjustment for degraded equipment  Experience training operation on redundant equipment  Experience from bug fixing on Flight Software  Optimization of Attitude and Orbital maneuvers 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

12. Network Implementation Plan 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai  Currently, all activities are done over the internet.  Current bandwidth available is approx. 5 Mbps BUT  All 3 of GISTDA’s site is connected to the UniNET  Which is part of TEIN 3 research network  NSPO is in discussion to connect to the TEIN3 network through the University in Taiwan  Possible Bandwidth – 20 Mbps

13. What would be possible? Uploading period to MY server o Tested files (THEOS images) was uploaded via internet connection o 3 Image files (199 MB, 189 MB, 748MB) = 1.5 GB o Using TEIN3 Route with UniNet server o Topology: ThaiREN Node – TEIN3 – Singapore Node o Bandwidth: 20 Mbps o Upload Time for 1.5 GB data: 4.52 min (748 MB data uses 2-3 min) 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai Loop Test Bangkok (UniNet) - Kuala Lumpur (Universiti Putra Malaysia)

14. S-Band Station (SiRacha) X-Band Station (Bangkok) Production Central Archiving Catalogue Server THEOS Image Telemetry Quick Delivery Media/FTP Service Ordering/Quotation Order Tracking Product Delivery Invoice/Billing Request Consultation User 14 Existing usage of UniNET - THEOS Polar station Programming X-Band PolarStation (Kiruna) Raw Data Storage International User (R&D/Universities) 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai 20 Mbps 155 Mbps DANTE: TEIN3/GEANT2 155 Mbps

15. Polar Station Data Transfer  Acquisition of Satellite data in Sweden  All Data are transferred for further processing in Thailand.  The polar station is connected with SUNET.  GISTDA’s station is connected with UniNet.  The data volume is around 690 MB to 30 GB image data per one orbits (~2 orbits/day) or upto 60 GB per day  Use of Data transfer over GEANT and TEIN3 greatly reduces transfer time in case of emergency situation Acquisition in Sweden Replay Production in Thailand Network 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

16. Network Topology: Overall 16 SSC Kirun a SUN ET NORD Unet Geant 2 TEIN3 Thai RE N Thai Sarn Uni Net GIST DA SSC Network *Kiruna-Stockholm *Own Investment 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

17. Network status monitoring at UniNet Bandwidth used during data download from Kiruna > 30 Mbps 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

18. Conclusion  GISTDA is employing the research network to improve response to emergency situations  Remote maintenance and assistance greatly reduce the cost of maintenance  Plans to connect to NSPO through the Research network  Tests show that bandwidth available will be multiple fold over the current available system 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

19. THANK YOU 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai

20. Existing Connection from TEIN 3 33 rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Cheingmai

21. Remote System management  GISTDA faces problem with S-band Antenna system  Slow recovery time due to foreign contractors  Reduced communication with THEOS  28 Jun 2010 : GISTDA-NSPO Meeting at NSPO  16 Sep 2010 : Cooperation Meeting between NSPO&GISTDA at SiRacha station Thailand on the Topic “Implementation of inter-operability between NSPO and GISTDA”  Both party agreed to implement the inter-operability of system.

22. Introduction S-Band System The system consists on a 4.5 meter diameter antenna with S-band capabilities providing simultaneous transmission and reception capabilities for LEO satellites. The antenna provides satellite tracking by means of Program Tracking mechanisms.

23. Maintenance Weekly maintenance GMCs and CORTEX: Restart Grease Pump Oil Pump Monthly maintenance Antenna and Hexapod (Nut, bolt and cable) Rack Maintenance: Visual inspection and remote function LAN Hub CORTEX and ADU: Visual inspection Operation with GMC2 Scan virus GMC (G/T) S-Band System

24. Maintenance Yearly maintenance  Rack Maintenance: Visual inspection and local function  Switch Control Unit  Test Interface Unit: G/T (Signal test) and visual inspection  F&T Subsystem  COETEX: Cleaning  Down Converter  Up Converter  MCG  GMCs: Backup data  Servo Control Unit  Anemometer  Line Amplifier: Signal test  SSPA S-Band System

25. Maintenance Yearly maintenance (cont’d) Antenna Drive Unit: Visual and power check Dehydrator Antenna and HXP: Cleaning and corrosion Level Diagram Change Oil and Grease S-Band System

26. List of anomaly Software Monitoring and control program. Behavior: Error in this program caused malfunction of other equipments. Solution: 1. Request for support from software owner (updated patch, re-configuration, etc.). 2. Back up software. 3. Use as it. Cause: Bug in software. S-Band System

27. List of anomaly Software Servo driving unit program. Behavior: Error in this program caused hexapod can’t be controlled. Solution: 1. Request for support either on-site support or remote support from Zodiac Cause: ESD in EEPROM of servo driving unit S-Band System

28. List of anomaly Hardware HPA Behavior: 1. Inconstant output power. 2. No output available. 3. Lost communication with M&C program. 4. Completely break down 5. High temperature Solution 1. Repair by HPA owner. Cause: Short circuit in HPA. High electrical power drive to HPA S-Band System

29. List of anomaly Hardware Hexapod Behavior: Cracking. Solution: Request on-site support from Zodiac Cause: Bolt brake broken S-Band System

30. Inter-Operability  Inter-operability present itself as a solution  Increase system reliability  Co-operation with NSPO due to similarity of satellite system

31. Cortex Parameters: Tele-command GISTDA - NSPO Workshop at Sriracha THEOS Parameters: FS-2 Parameters: Carrier Frequency: 2035.9625 MHz Polarization: RHCP IF Carrier Frequency: 70,000,000 Hz Operating Mode: PM Modulation Index: 1.2 rad. Filter Bandwidth: none IF Sweeping: OFF Sweep Rate: 30,000 Hz/s Sweep Range(+-): 80,000 Hz Data Bit Rate: 4 Kbps PSK Subcarrier Frequency: 16,000 Hz PCM Code: NRZ-L Subcarrier Shift Keying: BPSK Carrier Frequency: 2039.645833 MHz Polarization: RHCP IF Carrier Frequency: 70,000,832 Hz Operating Mode: PM Modulation Index: 1.0 rad. Filter Bandwidth: none IF Sweeping: RZ Sweep Rate: 20,000 Hz/s Sweep Range(+-): 75,000 Hz Data Bit Rate: 4 Kbps PSK Subcarrier Frequency: 16,000 Hz PCM Code: NRZ-L Subcarrier Shift Keying: BPSK 23 May 2011 GISTDA - NSPO Workshop at Sriracha

32. Cortex Parameters: Telemetry THEOS Parameters: FS-2 Parameters: Carrier Frequency: 2211 MHz Polarization: RHCP & LHCP Diversity Combining Enable: Yes Operating Mode: Combining IF Input Frequency: 70,050,000 Hz Acquisition Range: 150 KHz Carrier Acquisition: Normal AGC time Constant =1ms Loop Filter bandwidth = 0.3% PCM Demodulation: BPSK Frame Sync. Enable: Yes Sync Word (Hex): 1ACFFC1D Sync Word Size: 32 bits Carrier Frequency: 2215 MHz Polarization: RHCP & LHCP Diversity Combining Enable: Yes Operating Mode: Combining IF Input Frequency: 70,000,000 Hz Acquisition Range: 130 KHz Carrier Acquisition: Normal AGC time Constant =1ms Loop Filter bandwidth = 0.3% PCM Demodulation: BPSK Frame Sync. Enable: Yes Sync Word (Hex): 1ACFFC1D Sync Word Size: 32 bits 23 May 2011 GISTDA - NSPO Workshop at Sriracha

33. Cortex Parameters: Telemetry (2) THEOS Parameters: FS-2 Parameters: Frame/Block Size: 1279 Bytes Operating Mode: Normal Descrambling: Descrambling R-S decoding: On Frame Sync Input: Internal Roll-off factor = 0.1 PCM Code: NRZ-L Data Rate: 400 Kbps Matched Filter: Integral Frame/Block Size: 1279 Bytes Operating Mode: Normal Descrambling: Descrambling R-S decoding: On Frame Sync Input: Internal Roll-off factor = 0.1 PCM Code: NRZ-L Data Rate: 1,600 Kbps Matched Filter: Integral 23 May 2011 GISTDA - NSPO Workshop at Sriracha

34. History DateActivityResultRemark Sep-Oct 2010 Setup of Virtual Private Network (VPN) and verification of communication channel OK Nov 2010 – Jan 2011 Cortex Preparation and configuration, Setting up of the connection between host satellite operation software and remote S-Band system OKNSPO added extra functionality to the cortex to support GISTDA Jan – Feb 2011 Actual satellite pass test between the two hosts OK Mar 2011 - present Software test, NSPO support for GISTDA daily passes OK 23 May 2011 GISTDA - NSPO Workshop at Sriracha

35. Test Record prior GISTDA’s visit to NSPO DateActivitySatelliteMonitoring&ControlS-Band StationResultRemark 26/1/2011 TT&C FORMOSAT-2 NSPO SOCC, Hsinchu, Taiwan GISTDA, Siracha, Thailand TM: OK TC: Fail Antenna problem 28/01/2011 TT&C FORMOSAT-2 NSPO SOCC, Hsinchu, Taiwan GISTDA, Siracha, Thailand TM: OK TC: Fail Antenna problem 31/01/2011 TT&C FORMOSAT-2 NSPO SOCC, Hsinchu, Taiwan GISTDA, Siracha, Thailand TM: OK TC: Fail Antenna problem 8/02/2011 Tainan site installed an additional TMU-B - - NSPO Cortex, Tainan, TaiwanOK ZODIAC provided 9/02/2011 TT&C FORMOSAT-2 NSPO SOCC, Hsinchu, Taiwan GISTDA, Siracha, Thailand TM: OK TC: OK 10/02/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK 17/02/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK 17/02/2011 TT&C FORMOSAT-2 NSPO SOCC, Hsinchu, Taiwan GISTDA, Siracha, Thailand TM: OK TC: Fail NSPO Software Processing error 23 May 2011 GISTDA - NSPO Workshop at Sriracha

36. Record after GISTDA’s visit to NSPO DateActivitySatelliteMonitoring&ControlS-Band StationResultRemark 3/3/2011 Software THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK First Extraction of THEOS VC0 and VC1 3/3/2011 Software THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK Successful test of VC1 extraction 28/3/2011 Software THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK 2 nd test of VC0 and VC1 - successful 19/4/2011 Software FORMOSAT-2/ THEOS --- Completion of VC extraction software 20/4/2011 Software FORMOSAT-2/ THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan - Successful test of VC extraction software 21/4/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand -- S-band antenna failure 23 May 2011 GISTDA - NSPO Workshop at Sriracha

37. Record after GISTDA’s visit to NSPO - continued DateActivitySatelliteMonitoring&ControlS-Band StationResultRemark 22/4/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK Tainan 1-pass per day 22/4/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK First evening pass and mission upload 26/4/2011 Manual FORMOSAT-2/ THEOS --- Initiation of ICD and SOP 2/5/2011 TT&C THEOS GISTDA -SOC, SiRacha, Thailand NSPO Tainan, Taiwan TM: OK TC: OK Start of Tainan 2-pass per day 5/5/2011 Software THEOS - NSPO Tainan, Taiwan - STOL Operational 23 May 2011 GISTDA - NSPO Workshop at Sriracha

38. 20102011 SepOctNovDecJanFebMarAprMayJun Activity Inter-operability schedule 2010 – 2011 (Draft) Cortex Preparation /Configuration Satellite TT&C test Summarization of TEST & Ratification of ICD Work Shop at GISTDA:THAILAND Cooperation Meeting Work Shop at NSPO:TAIWAN Work Shop at GISTDA : THAILAND Verify Link & Network NSPO support for THEOS Daily Pass 23 May 2011 GISTDA - NSPO Workshop at Sriracha

39.  Weekend passes  Antenna training and Information Exchange  Further workshop as needed  After the success of ICE with NSPO, GISTDA hopes to extend ICE with other operators  Create a pool of resources  Several organization sharing knowledge and skills Future Plan/Discussion 23 May 2011 GISTDA - NSPO Workshop at Sriracha