1 white sands complex (wsc) overview part 2 of 5
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White Sands Complex (WSC) Overview
White Sands Complex (WSC) Overview
Part 2 of 5
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STGT
WSC LocationWSC Location
• 50 Air Miles from the US - Mexico Border
• 16 Miles NE of Las Cruces, NM
• On US Army White Sands Missile Range and BLM property
• Host Tenant agreement with WSTF / JSC
• GSFC Space Network (SN) Project Management
NASA WSC
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STGT
WSGT
White Sands Test Facility
WSC Ground TerminalsWSC Ground Terminals
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TDRS
The
WSC Complex
WSGT
ETGTGRGT
STGT
&
The Space NetworkThe Space Network
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TDRS MissionTDRS Mission
Provide communications, data relay, and tracking services for
Low Earth Orbiting (LEO) satellites, Human Space Flight, Space Shuttle,
ISS, Expendable Launch Vehicles (ELV), and Scientific Customers.
WSC
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Space to Ground Link Terminals (SGLT)Space to Ground Link Terminals (SGLT)
SN Legacy Systems
F-8271°W
F-1041°W
F-6174°W
F-446°W
F-962.4°W
F-3275°W
45SGLTs
WSGT
White Sands Complex (WSC)
3 2 1SGLTs
STGT
WART IFL SGLT 6
WAN
Guam Remote Station (GRS)
F-5171°W
F-149°W
F-7150°W
Space to Ground Link
STTC STTCSGLT 7
GRGT
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WSC ResponsibilitiesWSC Responsibilities
• Two Satellite Ground Stations in Las Cruces, co-located with the NASA White Sands Test Facility.
– Five Space-to-Ground Link Terminals (SGLT-1, 2, 3, 4 & 5)
– Extended TDRS Ground Terminal (ETGT) and the WSC Alternate Remote Terminal (WART).
• One Satellite Ground Station (GRGT) on the island of Guam. – One Space-to-Ground Link Terminal (SGLT-6).
• SGLT-7 is currently in the design and testing phase. At this point it is only capable of supporting TDRS TT&C and one customer.
• Nine NASA Tracking and Data Relay Satellites (TDRS-1,3,4,5,6,7,8,9,10).
• Satellite Operations, Hardware and Computer Maintenance, Sustaining Engineering, Logistics, Facilities, and Security.
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WSC Ground TerminalsWSC Ground Terminals
STGT - Second TDRS Ground Terminal– Three 19m Dual S/K Band antennas
– Three Space Ground Link Terminals (SGLT)
– One 10m S-band TT&C (STTC)
– Three dual S/K band 4.5m End-to-End test antennas
– Data Interface System (DIS)
– Primary TDRS Operations Control Center(TOCC)
WSGT - White Sands Ground Terminal– Three 18.3m K Band antennas
– Two Space Ground Link Terminals (SGLT)
– One 10m S-band TT&C (STTC)
– Two dual S/K band 4.5m End-to-End test antennas
– Data Interface System (DIS)
– Limited capability TOCC
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WSC Ground TerminalsWSC Ground Terminals
• STGT– T-2 Main Ops Bldg. 71,400 net ft2
– T-3 Power Plant 6,300 net ft2
– T-4 Guard House 330 net ft2
– T-6 Facilities Storage Bldg 190 net ft2
– T-8 Vehicle Maintenance Bldg 2,400 net ft2
• WSGT– T-1 Main Ops Bldg. 56,100 net ft2
– T-5 ETGT Admin Facility 616 net ft2
– T-7 MIR Equipment Shelter 71 net ft2
– T-14 Wood Working Shop 1,230 net ft2
– T-15 ETGT Maintenance Facility 372 net ft2
– T-16 ETGT Bldg 1,700 net ft2
– T-17 Flammable Storage Bldg 380 net ft2
– T-18 Facilities Storage Bldg 240 net ft2
– T-19 Hazardous Storage Bldg 430 net ft2
– T-20 Technical Support Bldg 23,700 net ft2
– T-21 Guard House 330 net ft2
– T-22 Document Shredder Bldg 280 net ft2
– T-23 Facilities Work Shop 680 net ft2
– T-24 Open Storage Shed (S. Ant. Field) 420 net ft2
– T-25 Remote Generator Bldg 3,400 net ft2
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WSC Ground TerminalsWSC Ground Terminals
GRGT – Guam Remote Ground Terminal
– One 11m dual S/K Band Antenna
– One 16.5m dual S/K Band Antenna
– Two Space Ground Link Terminals (SGLT-6 & 7)
– Two dual S/K band 4.5m End-to-End test antennas
– Guam Data Interface System (GDIS)
– MA, S-Band, and K-Band services
– Remotely controlled from WSC
– Provides Zone of Exclusion (ZOE) coverage
WART – WSC Alternate Relay Terminal
– One 18.5m K-Band Antenna
– One modified Space Ground Link Terminal (SGLT)
– No End-to-End Test capability
– SSAF/SSAR and KSAR Services
– Dedicated services to South Pole TDRS Relay (SPTR)
ZOE Closure
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WSC Back Up TerminalsWSC Back Up Terminals
ETGT – Extended TDRS Ground Terminal
– One 9.5m S-Band Antenna
– One 10m S-Band Antenna
– STTC Operation only
Other TDRS T&C Resources
– GN and DSN ground resources utilized for spacecraft emergency and supplemental Tone Ranging on TDRS spacecraft
– STTC Operation only
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WSC EvolutionWSC Evolution
WSGT Operational with TDRS-1 launch STGT Integration and Transition WSC System Modifications for F-7 support WSGT Ground System Upgrade TOCC Consolidation Relocation of SGLT-6 to Guam for ZOE closure TDRS – H I J Program Data Services Management Center (DSMC) Data Services Automation (DSA) Demand Access System Integration Space Network Expansion (SGLT-7) at GRGT
1983 – 1994 –
1991 – 1994 –
1993 – 1995 –
1994 – 1995 –
1996 – 1997 –
1996 – 1998 –
1998 – 2003 –
2000 – 2001 –
2002 – 2003 –
2002 – 2004 –
2005 – 2007 –
How we got to where we are TodayHow we got to where we are Today
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Space Network OperationsSpace Network Operations
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Forward DataForward Data
• MAF supports up to 300K, PN Spread
• SSAF supports up to 300K, PN Spread
• SSAF supports up to 7M, no PN Spread, BPSK
• KSAF supports up to 300K, PN Spread
• KSAF supports up to 25M, no PN Spread, BPSK
• Data Formats are NRZ-L,M,S
• Only Shuttle uses BiΦ-L and 1/3 Encoding
• I Carrier contains Short PN + Data
• Q Carrier contains only Range/Long Code
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Return DataReturn Data
• Data Formats are NRZ & BiΦ-L
• MAR is 300K/PN or Cross-Support >>> – MAF + SSAR I=150K/PN, Q=1.5M – TDRS 1 - 7
• SMAR is 300K/PN or I=1.5M, Q=1.5M – TDRS 8 – 10
• SSAR is 300K/PN (I/Q = 150K each)
• SSAR is 6M (I + Q) Encoded – no PN
• KSAR is 600K/PN (I/Q = 300K each)
• KSAR is 300M (I/Q = 150M) Un-encoded NRZ
• See Space Network User’s Guide (450-SNUG) for more accurate specifications
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PN RangingPN Ranging
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TDRS Bilateration RangingTDRS Bilateration Ranging
BILATERATION FORMS A LARGE RANGING TRIANGLE (WSC – ASCENSION OR ALICE SPRINGS OR AMERICAN SAMOA.) FUNCTIONS AS A USER SUPPORT, BUT USES A GROUND BASED TRANSPONDER. IT IS A SPECIALIZED CASE OF PN RANGING.
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STGT TOCCSTGT TOCC
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WSGT TOCCWSGT TOCC
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TOCC ConsoleTOCC Console
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SN Data Services OperationsSN Data Services Operations
TDRS Operations Control Centers
• Real Time data acquisition operations (24x7)
• Real time anomaly resolution
• Monitor and control resources
• Backup to automated systems
• Direct real time interface with network customers
• 24x7 Staffing
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Data Services Management Center (DSMC)Data Services Management Center (DSMC)
Scheduling• Space Network Scheduling
– SN Real Time Scheduling operations
– SN Forecast operations
• Ground Network Scheduling– GN Scheduling operations
– GN Forecast operations
Customer Support– Conflict resolution
– Anomaly resolution
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TDRS Ground OperationsTDRS Ground Operations
• Prime responsibility for ground operations is to monitor all ground system configuration and operation
• Site Specialist (SS) is responsible for overall ground station configuration including communications
• Communication Service Controller (CSC) is responsible for SGLT operation and customer interface
• SN Real-time Scheduler/Forecast Scheduler ensures customer support requests are prioritized and scheduled– Scheduler functions reside at STGT
• Hardware and Computer Technicians provide support for ground systems
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• Prime responsibility for Flight operations is to monitor the heath and safety of the TDRS fleet.
• Two Satellite Controllers control and monitor 9 TDRS– Flight Operation function resides at STGT
• Monitoring function includes executing procedures to safe the TDRS in case of an anomaly. Spacecraft Engineering is called in to resolve anomaly.
TRW TDRS 1-7 *
Boeing TDRS 8-10
* TDRS 2 Lost in Challenger Disaster
We operate two different types of spacecraft buses on the same systems.
TDRS Spacecraft OperationsTDRS Spacecraft Operations
• We conduct spacecraft housekeeping activities on a non interference basis to ongoing customer tracking services. Some of these activities include :
– Momentum unloads– Station keeping / Obit determination– Battery management– Ephemeris uploads
• SatCon executes procedures to safe the TDRS in event of an anomaly.
• Operations perform via alternate command/telemetry system: – TDRS 1-7 recovery performed via RCTS/RTMS-2– TDRS 8-10 recovery via ADPE– TDRS 8-10 has limited command capability via RTMS
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SN Data Services Operations (continued)SN Data Services Operations (continued)
Technical Operations/Analysis • Perform data loss analyses with customers • Supports Interface testing for new network customers • Supports operations for critical customer events, Shuttle launch, ELV launch,
ISS critical, etc. • Represent Operations for system software, hardware, firmware design reviews
(PDR through ORR) • Provides test plans/checkout and testing before any deliveries of SW, HW,
FW, or system change is installed on the operational system • Develop training packages and documentation changes
Operational Database Management• Provides database control over several databases unique to WSC:
– ADPE– NCCDS– RTMS– ANCC– TDRS
• Utilizes Local and external procedures to coordinate and implement changes
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TDRS Spacecraft EngineeringTDRS Spacecraft Engineering
TDRS Analyst functions: • Perform spacecraft ACS and System anomaly analyses
• Perform spacecraft station-keeping maneuver and drift planning
• Perform Momentum management
• Perform Trending and State of Health
– Perform eclipse and intrusion management
– Perform battery reconditioning
• Spacecraft Engineering on call for recovery and anomaly resolution
• Provide TDRS Systems and ACS training to SatCons
• Represent Operations for system software, hardware, firmware design reviews
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Forecast Scheduler• Advance Planning• Conflict Avoidance• External interface
• WSC Long resource planningOperations Database Manager• Ops DB management and control• Customer support
SN
C
US
TO
ME
RS
TDRS Analyst• Monitors and Trends TDRS(s)• Station Keeping Planning/Direction• Momentum Planning• Direct (ETO) Recovery Operations • Document Spacecraft Status (DRD
1.5.a)
Spacecraft Engineer • Monitors and Controls SGLT• Monitors Customer Support• SGLT Contingency Operations
Communications Service Controller
• Responsible for Data transport to/from customers. Off-site interface.
• Coordinates / executes contingency procedures
Site Specialist
Space Network Real Time Operations
Operations Supervisor• Senior On-Shift Manager• Single Point Responsibility for End-to-End
Network Anomalies• Summarizes and Reports Network Status to WSC
Management
TDRS Operations Control Center - STGT
• Reschedule due to outage/slips • BRTS Scheduling Per Requirements• Manage Schedule Rejects
Real Time Scheduler STGT TOCC
Forecast Scheduler
SatCon WART• Monitor and Controls TDRS A• Schedules SPTR Supports
SatCon• Monitor and Controls 8 TDRS
• Station Keeping Executions• Momentum Monitor and Executions• Contingency Operations
TDRS Console Operations STGT TOCC
Field Technicians• PM • Anomaly response• Level 1 repair
GRGT Field Tech
• PM • Anomaly response• Level 1 repair
GCE Tech
Tech Ops (TOA) • Support customer anomalies• System testing with new customers
OET• Software Test and Eva;• Training
DSMC
OS ControlOps SupportCustomer Interface
TDRS OperationsTDRS Operations
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We utilize the following processes for Space Network Operations:– Certified Operators: Extensive Training and Certification program.
– Procedures: WSC employs Local Operating Procedures (LOPs) that are used whenever keyboard ground or spacecraft commanding is required. Procedures are also utilized for fault isolation, handover of TDRS from one resource to another (including DSN and GN), and maintenance activities. All LOPs are developed and controlled locally.
– Two person verification: Critical keyboard commanding to ground or TDRS requires a second person verifier.
– Software Automated processes: We employ automated fault detection software for both the ground and space segments.
– Anomaly Identification and Resolution: We utilize procedures for anomaly resolution and utilize a Comprehensive Discrepancy Reporting system to document and correct anomalies for customer and WSC related issues.
– Root Cause Corrective Action: In the event of a system failure or operator error we activate our RCCA process. “Drill down”
– Report Generation: We provide reports on a daily, weekly, monthly, and semi-annual basis.
We require ISO certification to ensure ISO standards are inherent in all of our processes
Space Network OperationsSpace Network Operations
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Operations TrainingOperations Training
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Operations New Hire TrainingOperations New Hire Training
“Overview Classes” (Approx 7 to 10 days)• WSC System Overview: a top level intro to the WSC
and its’ functions in the SN.
• WSC Hardware Overview: provides a good foundation in principles of the WSC hardware interrelationships.
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Operations New Hire Training (cont)Operations New Hire Training (cont)
• Software Overview: provides a foundation in principles of the WSC Legacy ADPE and NCCDS
• Operations Overview: covers responsibilities of each of the operator positions
• TDRS Level I: an overview of the TDRS. Usually provided after certification
• TDRS Level II: detailed discussion of the TDRS. This course provided for SatCon only
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SMTF TrainingSMTF Training
• Approximately 4 weeks: provides the trainee with the foundations of TOCC operations.
– Man/Machine interface
– USS/TTC commanding/Status collection
– Contingency procedures; ETO recovery, inclement weather and TDRS handovers
– SHO and PSHO entry
– ADPE cold-starts
• Provides a smooth transition to OJT
• Real-time scenario simulation: provided by the Hardware Simulator (HSIM), NCCDS/DIS Simulator (NSIM) and the TDRS Spacecraft Emulator (TSE).
• Shortens Certification Period
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OJT/CertificationOJT/Certification
OJT• Approximately 3 to 5 months
• Day shift only: provides an improved atmosphere for training as more activities are taking place and Subject Matter Experts are more readily available. In addition, several instructors provide a more complete exposure to TOCC operations than a single instructor.
• Utilize existing training plans/skills catalogs
Certification• Evaluators for all positions identified
• Takes approximately 2 to 3 days
• Certification determination made by Trainer and OS
• Trainee assigned to a permanent rotating shift crew
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Hardware Maintenance Depot (HMD)
Hardware Maintenance Depot (HMD)
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HMD ResponsibilitiesHMD Responsibilities
• Responsible for all Hardware in the GCE associated with each SGLT up to and including the antennas
• Responsible for all Automated Data Processing Equipment (ADPE)
• Responsible for the EOS GSIF and the STS/ISS VHF equipment
• First Response LRU replacement
• Depot Repair to component level
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Ground Control Equipment (GCE) AreaGround Control Equipment (GCE) Area
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GCE Area and HMDGCE Area and HMD
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Equipment InventoryEquipment Inventory
• 540 Racks of hardware at three sites
• 2800 Chassis - Most are unique and custom-built
• 42 Vax Clusters, 110 Vax Workstations
• 1649 Test Equipment Items
• 20 Antennas
– 3 - 19 Meter Dual Band (Ku & S) Beam Waveguide (STGT)
– 3 - 18.3 Meter Ku Band (WSGT)
– 2 - 10 Meter S-Band (WSGT/STGT)
– 1 - 11 Meter Dual band (Guam)
– 2 - 16.5 Meter Dual band (Guam)
– 6 - 4.5 Meter Dual Band End-To-End Test (1 at Guam)
– 2 - S Band ETGT antennas, 1 - 9Meter, 1- 6.2 M
– 1 - Ka Band End-To-End Test
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HMD TrainingHMD Training
• General Skills Catalog Training:– Approximately 45 days
• TDRS Overview Class:– a top level intro to the WSC and its functions in the SN
• TDRS 880 Class: – a technical overview of the TDRS and all of its subsystems
• Crew Assignment: – Once clearance has been obtained
Hardware and Computer Technician New Hire Training
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HMD TrainingHMD Training
Computer Tech OJT:• Perform ADPE corrective and preventive maintenance
• ADPE communication with the GCE
• Understand roles and responsibilities of all of the TOCC positions.
Hardware Tech OJT :• Data Interface System (DIS)
• TT&C
• USS
• Shuttle Unique Equipment
• GRGT
• Test Equipment
Certification:• Once all of the skill sets have been mastered, the final certification
determination is made by the supervisor/manager