GPS Modernization - Stanford University€¦ · Back-to-Basics Investments •Extensive flight-like...
Transcript of GPS Modernization - Stanford University€¦ · Back-to-Basics Investments •Extensive flight-like...
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GPS Modernization: GPS III On the Road to the Future
Dr. Keoki Jackson
Vice President, Navigation Systems
Space Systems Company
Stanford PNT Symposium
November 13-14, 2012
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GPS III Summary
• On track to deliver first vehicle on schedule in 2014
• Back-to-Basics up front investments are reducing risks
early and demonstrating results
• GPS III Non-Flight Satellite Testbed (GNST) integrated
and SV01 products delivering
• Program has affordable, low-risk capability on-ramps: on
track for dual launch starting with SV09
• Launch & Checkout Capability supports 2015 launch
• GPS III delivers needed capabilities beyond Block II:
Increased M-code power, improved accuracy, L1C signal,
extended life
Executing to deliver on schedule in May 2014
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Rockwell
Block I
Boeing (Rockwell)
Block II/IIA
Lockheed
Martin
Block IIR
Lockheed
Martin
Block IIR-M
Boeing
Block IIF
Lockheed
Martin
Block III
• L1 (CA) Navigation signal
• L1 & L2 (P Code) Navigation signal
• 5 Year Design Life
• Std Service • Single Frequency (L1) • C/A code navigation • Precise Service • Two frequencies (L1 & L2) • P (Y) -Code navigation • 7.5 Year Design Life • Reprogrammable Nav. Processor on
Block IIR
Demonstration system
Basic GPS Provides Initial Navigation Capabilities
IIA/IIR Capabilities “Plus”
• 2nd Civil Signal L2 (L2C) • Earth Coverage M-Code on L1/L2 • L5 Demo • Anti-Jam Flex Power • 7.5 Year Design Life
IIR -M Capabilities “Plus”
• 3rd Civil Signal L5 • Increased Accuracy requirement • 12 Year Design Life
IIF Capabilities “Plus”
• Increased accuracy • Increased M-code
Earth Coverage power
• 4th Civil Signal (L1C) • Increased Integrity • 15 Year Design Life • Dual Launch-able
1978 - 1985 1989 – 1997 1997- 2004 2005 - 2009 2010 - Present 2014 - 2024
11 (10) Satellites 28 Satellites 13 (12) Satellites 8 Satellites 12 Satellites Up to 32 Satellites
GPS Evolution -Space Segment
Evolution has increased Space System capabilities and user benefits
Signal Power
Accuracy
10x
4x
3x 1x
1x
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Modernization - GPS III Program
• Next Generation GPS – Improved performance for both
military and civilian users
– Superior system security,
accuracy, and reliability
• Strategic Teammates – U.S. Air Force
– Lockheed Martin Space
Systems Company
– ITT Exelis Corporation
– General Dynamics
– Honeywell
• Heritage of Success – GPS IIR/IIR-M success
– Time-tested A2100 bus
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GPS III Capability Comparison Area Attributes GPS II GPS III
Bus Modern scalable bus No Yes
Navigation Signals
L1 / L2: C/A, P(Y), M-code; L2C Yes Yes
L5: I, Q Yes Yes
L1C No Yes
Flexibility: additional codes / frequencies No (SMI)
Integrity GPS III Integrity Monitoring No Partial
Anti-Jam
GPS IIR-M / IIF Flexible power No Yes
Increased M-code power (3x-8x) No Yes
Spot Beam No (SMI)
Network Comm
S-Band Up / Down links Yes Yes
USB Up / Down links No (SMI)
UHF Crosslinks Yes Yes
Crosslink network for on-demand Command/Control No (SMI)
Range Error Less than 1 meter (4x improvement) No Yes
Other
Dual Launch capable (vs. Direct Inject) No Yes
NuDet Detection System (NDS) Yes Yes
Compatibility with modernized NDS No (SMI)
Space Modernization Initiative (SMI) No Yes
Increased Security / Information Assurance No Yes
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GPS III Program Plan
SV01 Integration Underway Following Successful GNST Pathfinding
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Calendar Year
1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4
GPS III SV01 - SV02
GNST
SV01 & SV02 DELIVERY
Production SV Options
2014 2015 2016 2008 2009 2010 2011 2012 2013
Eng Development Unit (EDU) Deliveries
Qualification Unit Deliveries
SV01 Flight Unit Deliveries
GPS Satellite
Simulator PDR
Critical Design Review ATP
5/08 IBR
5/09 6/08 8/10
Long Lead (LL) 3-4
Today
Development
SV01 PSR
SV02 PSR
Comm Units Delivery
Nav Panel Delivery
Ship L+ To Denver
Ship To Cape
SV01 Nav Pnl Delivery
SV01 Comm & Propulsion Core Delivery
SV02 Nav Pnl Delivery
SV02 Comm Units Delivery
12/10
LL7-8
LL5-6 Production
(PR) 3-4 PR5-6 PR7-8
SV01 Avail For Launch
SV02 Avail For Launch
Development GPS III SV09+
LCC Qual
dSRR dSDR dPDR
SV09+ dCDR
dPDR
BL
Schedule Margin 6 months (33%) Margin to SV01 Available for Launch Milestone
Legend ATP – Authority to Proceed
IBR – Interim Business Review
LCC – Launch and Checkout
Capability
PDR – Preliminary Design
Review
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GPS III Recent Highlights
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GNST in Dynamics Pathfinding GNST Navigation Payload Shipped
SV01 Propulsion Subsystem Delivered SV01 L-Assembly
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GPS Processing Facility (GPF), Denver
TVAC Chamber
Anechoic Chamber
GPF High Bay
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Shipped to GPF
Full Nav Payload in test
Antenna qual test complete
Nav Payload Interface testing complete (NPE-Lite)
Early panel shock test
Core Mate
Antenna Panel installation
Mass properties & modal survey
Acoustic pathfinding
Nav Payload TVAC & Delivery Nov 2012
Nav Payload Integration Dec 2012
Ship to Cape Canaveral Apr 2013
GNST Integration & Test Pathfinding Progressing in GPF Ahead of SV01
GPS Non-Flight Testbed (GNST)
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GNST Core Mate in GPF (Denver)
Transport to Modal & Acoustic
Spin Test
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Virtual Production Pathfinding
Error-Proofing in the Collaborative Human Immersive Lab (CHIL) 11
Work cell simulation
• Cycle times reduced 25% or
more
• Integration sequences, tooling
and ergonomics validated or
revised
Factory Layout and Flow
• Distance traveled: 62%
reduction
• Lifts: 56% reduction
• Cycle time: 39% reduction Preliminary Notional Factory Floor
Discrete Event Simulation
System Module – Core Mate
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GPS III Space Vehicle 01 Core Structure
delivered
Integration commenced in GPF
Comm subsystem hardware
Launch Exercise #1
Propulsion subsystem delivered
System Module Initial Power On in Nov 2012
Nav Payload Mar 2013
SV01 Initial Integration in GPF
Initial Integration of SV01 Started – Propulsion System Delivered
SV01 Propulsion Subsystem, Stennis, MS
Launch Exercise #1
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Back-to-Basics Investments • Extensive flight-like engineering
models drove out issues early – 30-70% reductions in discrepancies,
manufacturing hours, cycle time
• GNST pathfinding all SV01 activities and test products a year ahead of SV01
• Early Software Integration identifying, resolving issues before SV testing
• Rigorous traceability and systems engineering enabling requirements verification ahead of typical programs
Back-to-Basics Investments Demonstrating Returns
AI&T Procedure Cycle Time:
70% Reduction from GNST to SV01
Comm Box Build Time (hrs):
62% reduction from Qual to SV01
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SV01 Launch and Checkout
LM Newtown facility complete
Launch & Checkout Capability (LCC) hardware, initial software installed
Exercise 1 complete – Aug 23, 2012
• Supports SV01 May 2015 Launch & On-Orbit Test
• Incorporates Raytheon OCX Launch & Checkout System (LCS)
LCC/LCS Enables SV01 Launch in 2015
Launch Exercise #1
Team in LCC
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Dual Launch and Capability/Affordability Insertion
• Dual Launch feasible, added to SV09+ baseline
Joint study with ULA completed Nov 2011
ULA estimates $0.7 – 1.5B savings in launch costs
Study to achieve System Requirements Review maturity
• Other Key Capabilities added on GPS III SV09+
– NDS upgrades, affordability modifications
– Unified S-Band (USB)
– Flexible Digital Waveform Generation
– Search/Rescue Payload (SAR-GPS) and Laser Retro-reflector
Array (LRA)
SAR/GPS
UHF Rx
Antenna
Dual Launch
Stack on Atlas V
SV09+ delta-PDR on Track for Feb 2013
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Conclusion
• GPS III Brings New Capabilities – Higher Power
– Greater Accuracy
– Additional Signals
• On-Ramps for Additional Capabilities at SV09 – Dual launch
– Search and Rescue payload
– Flexible signal generator payload
• On Track for SV01 Delivery and Launch – GNST in test
– SV01 in assembly
On Track for SV01 Delivery and Launch 16