Slides

Report
Pirada Techavijit [email protected]
Ravit Sachasiri [email protected]
GISTDA
• Public Organization
• Responsible for:
 remote sensing
 space technology
• Operates Thailand Earth Observation System
(THEOS -> Thai Chot)
• first Thai earth observation satellite
• Thai Chot was launched on 1st October 2008
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
• Taiwan’s civilian space agency
• Established in October 1991
• Involved in the several areas including:
FORMOSAT-3
FORMOSAT-1
FORMOSAT-2
• development of space exploration
• satellite construction and development
• research in aerospace engineering
• remote sensing
• Sciences such as Astrophysics, atmospheric science,
information science and defense
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Cooperation
Project
Technical
Assistance
Technical
Workshop/Training
Instrument
Calibration and
Evaluation
Image Sharing
Post-maneuvers
evaluation
Remote System
management
Satellite/Ground
Anomaly
Management
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Cooperation between GISTDA and NSPO

NSPO’s engineers visited GISTDA in 2010
 Observe current system
 Agreement on requirements and setup of communication channel
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Cheingmai
Remote System Management (Ground Sharing)
 Increase system reliability
 Co-operation with NSPO due to similarity of satellite system
THEOS
RF
400 kbps S-Band D/L
S/C VC0, VC1
4 kbps S-Band U/L
S/C Command
RF
NSPO’s
satellites
RTS
NSPO
Non Real-time
- RTS Push of S/C VC0 and VC1
- SCC Push TLE
Real-time from RTS
S/C RT telemetry (VC 0)
VPN
TS1
1.6 Mbps S-Band D/L
S/C VC0, VC1
RF
SCC Process
VC0 and VC1
Push to SOCC
FTP
RF
4 kbps S-Band U/L
S/C Command
SBS
GISTDA
Real-time from RTS
S/C RT telemetry (VC 0)
VPN
Non Real-time
- SCC Push S/C VC0 and VC1
- SOCC Push TLE
VPN
TS2
VPN
TS3
Real-time to RTS
S/C RT telecommand
SCC
GISTDA
Real-time to RTS
S/C RT telecommand
SCC
GISTDA
VPN
SOCC
NSPO
FTP
Non Real-time
- Scheduled Request/Confirm
- Emergency Cases
Non Real-time
- Scheduled Request/Confirm
- Emergency cases
E-mail
E-mail
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
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
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Joint Programming
 Increased shared value
 Decrease time between
acquisition
 Better response to emergency
situation
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Disaster
Response
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
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
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
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
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Network Implementation Plan
 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
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
What would be possible?
Loop Test Bangkok (UniNet) - Kuala Lumpur (Universiti Putra Malaysia)
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)
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Existing usage of UniNET - THEOS Polar station
Image Telemetry
THEOS
Raw Data Storage
S-Band Station
(SiRacha)
X-Band Station (Bangkok)
X-Band PolarStation (Kiruna)
20 Mbps
Production
Programming
155 Mbps
Quick Delivery
Service
Media/FTP
Ordering/Quotation
Order Tracking
Product Delivery
Invoice/Billing
Central Archiving
Catalogue Server
155 Mbps
Consultation
DANTE:
TEIN3/GEANT2
Request
User
International User
(R&D/Universities)
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
14
Polar Station Data Transfer
Acquisition
in Sweden
 Acquisition of Satellite data in Sweden
 All Data are transferred for further processing in
Thailand.
 The polar station is connected with SUNET.
Network
 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
Replay Production
in Thailand
 Use of Data transfer over GEANT and TEIN3 greatly
reduces transfer time in case of emergency situation
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Network Topology: Overall
SSC Network
*Kiruna-Stockholm
*Own Investment
SSC
Kiruna
SUNET
NORDUnet
Thai
REN
ThaiSarn
TEIN3
UniNet
Geant2
GISTDA
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
16
Network status monitoring at UniNet
Bandwidth used during data
download from Kiruna > 30 Mbps
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
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
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
THANK YOU
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Chiangmai
Existing Connection from TEIN 3
33rd Asia-Pacific Advanced Network Meeting, 13-17 February 2012, Cheingmai
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.
S-Band System
Introduction
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.
S-Band System
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
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
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
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
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
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
List of anomaly
• Hardware
• Hexapod
Behavior: Cracking.
Solution: Request on-site support from Zodiac
Cause: Bolt brake broken
Inter-Operability
Inter-operability present itself as a solution
Increase system reliability
Co-operation with NSPO due to similarity of
satellite system
Cortex Parameters: Tele-command
THEOS 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
FS-2 Parameters:
•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
GISTDA - NSPO Workshop at Sriracha
23 May 2011
Cortex Parameters: Telemetry
THEOS 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
FS-2 Parameters:
• 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
GISTDA - NSPO Workshop at Sriracha
23 May 2011
Cortex Parameters: Telemetry (2)
THEOS 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
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: 1,600 Kbps
• Matched Filter: Integral
GISTDA - NSPO Workshop at Sriracha
23 May 2011
History
Date
Activity
Result
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
OK
Jan – Feb
2011
Actual satellite pass test
between the two hosts
OK
Mar 2011 present
Software test, NSPO support
for GISTDA daily passes
OK
GISTDA - NSPO Workshop at Sriracha
Remark
NSPO added
extra
functionality
to the cortex
to support
GISTDA
23 May 2011
Test Record prior GISTDA’s visit to NSPO
Date
Activity
Satellite
Monitoring&Control
Result
Remark
26/1/2011
TT&C
FORMOSAT-2
NSPO SOCC, Hsinchu, GISTDA, Siracha,
Taiwan
Thailand
TM: OK
TC: Fail
Antenna
problem
28/01/2011
TT&C
FORMOSAT-2
NSPO SOCC, Hsinchu, GISTDA, Siracha,
Taiwan
Thailand
TM: OK
TC: Fail
Antenna
problem
31/01/2011
TT&C
FORMOSAT-2
NSPO SOCC, Hsinchu, GISTDA, Siracha,
Taiwan
Thailand
TM: OK
TC: Fail
Antenna
problem
8/02/2011
Tainan site
installed an
additional
TMU-B
-
OK
ZODIAC
provided
9/02/2011
TT&C
FORMOSAT-2
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
-
S-Band Station
NSPO Cortex,
Tainan, Taiwan
NSPO SOCC, Hsinchu, GISTDA, Siracha,
Taiwan
Thailand
NSPO SOCC, Hsinchu, GISTDA, Siracha,
Taiwan
Thailand
GISTDA - NSPO Workshop at Sriracha
TM: OK
TC: OK
TM: OK
TC: Fail
NSPO Software
Processing error
23 May 2011
Record after GISTDA’s visit to NSPO
Date
Satellite
Monitoring&Control
S-Band Station
Result
Remark
THEOS
GISTDA -SOC,
SiRacha, Thailand
NSPO Tainan,
Taiwan
TM: OK
TC: OK
First Extraction
of THEOS VC0
and VC1
THEOS
GISTDA -SOC,
SiRacha, Thailand
NSPO Tainan,
Taiwan
TM: OK
TC: OK
Successful test
of VC1
extraction
Software
THEOS
GISTDA -SOC,
SiRacha, Thailand
NSPO Tainan,
Taiwan
TM: OK
TC: OK
2nd test of VC0
and VC1 successful
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
3/3/2011
3/3/2011
28/3/2011
19/4/2011
Activity
Software
Software
GISTDA - NSPO Workshop at Sriracha
23 May 2011
Record after GISTDA’s visit to NSPO - continued
Date
Activity
Satellite
Monitoring&Control
S-Band Station
Result
Remark
22/4/2011
TT&C
THEOS
GISTDA -SOC,
SiRacha, Thailand
NSPO Tainan,
Taiwan
TM: OK
TC: OK
Tainan 1-pass
per day
NSPO Tainan,
Taiwan
TM: OK
TC: OK
First evening
pass and
mission upload
22/4/2011
TT&C
THEOS
GISTDA -SOC,
SiRacha, Thailand
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
GISTDA - NSPO Workshop at Sriracha
23 May 2011
Inter-operability schedule 2010 – 2011 (Draft)
2010
Sep
Oct
Cooperation
Meeting
Verify Link
& Network
2011
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Work Shop at
GISTDA : THAILAND
Cortex
Preparation
/Configuration
Work Shop at
NSPO:TAIWAN
Activity
Satellite TT&C
test
Work Shop at
GISTDA:THAILAND
Summarization of TEST &
Ratification of ICD
NSPO
support
for THEOS
Daily Pass
GISTDA - NSPO Workshop at Sriracha
23 May 2011
Future Plan/Discussion
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
GISTDA - NSPO Workshop at Sriracha
23 May 2011

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