eloran terrestrial prs quality timing
play

eLoran Terrestrial PRS Quality Timing Charles Curry B.Eng, FIET - PowerPoint PPT Presentation

Aug 23, 2022 •16 likes •306 views

eLoran Terrestrial PRS Quality Timing Charles Curry B.Eng, FIET MD, Chronos Technology Ltd ITSF 3-5 Nov 2009 - Rome Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD www.chronos.co.uk T: +44 (0)

  1. eLoran – Terrestrial PRS Quality Timing Charles Curry B.Eng, FIET MD, Chronos Technology Ltd ITSF 3-5 Nov 2009 - Rome Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  2. Contents Introduction & Background The Loran System New UK Loran Station Test Results Report from ILA38 in Portland, Maine Latest Loran Developments The GAARDIAN Project Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 2 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  3. The Enhanced Loran (eLoran) System Internationally Standardized PNT System (Positioning Navigation and Timing) Latest evolution of the LO ng RA nge N avigation system Meets Accuracy, Availability, Integrity and Continuity requirements of � Aviation non-precision instrument approaches � Maritime harbour entrance and approach manoeuvres � Land-mobile vehicle navigation � Location-based services � Precise source of time and frequency for applications such as telecommunications Independent, Dissimilar complement to GNSS Systems � Uses a different part of the electromagnetic spectrum � Time traceable to UTC independently of GNSS � Interoperable with GNSS for positioning, navigation and timing Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 3 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  4. Other Loran Facts Loran/Chayka networks in many countries/regions � USA, Europe, Russia, Saudi Arabia, China, Japan, India, South Korea � All funded and active with different functional capabilities Interference Immunity � Not susceptible to GPS impacting interference � Unique adaptive notch filtering to mitigate LF interference 100KHz LF Transmission Frequency � Different part of spectrum to GNSS (1-2 GHz) � Better building penetration Pulsed signal transmission � Allows separation of ground/skywave � Different to DCF77 or MSF 60KHz Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 4 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  5. Red = Loran Green = Chayka Picture Courtesy GLA Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 5 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  6. Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 6 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  7. Recent Events Press Release, 30 May 2007 � “Today, the General Lighthouse Authorities of the United Kingdom and Ireland announce the award of a prestigious fifteen-year contract to VT Communications (part of VT Group plc) for the provision of a state-of- the-art enhanced Loran (eLoran) radionavigation service to improve the safety of mariners in the UK and Ireland” � 15 Year Funded Program by UK Government (Dept for Transport) Anthorn Progress � 7 July 2007 – experimental transmitter moved from Rugby � 1 October 2007 – first signals from Anthorn for test and verification � 1 December 2007 – trial signals operational � 21 January 2008 – UK eLoran Station “Enters Service” Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 7 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  8. There is growing, strong, cross-government support for eLoran eLoran Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 8 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  9. Anthorn, Cumbria Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 9 Source: VT Communications www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  10. The containerised transmitter and connection to the T-antenna Source: VT Communications Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 10 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  11. Chronos Testing Chronos Commissioned to “Type Approve” eLoran for Telecom Network Stability ITU G.811 used as Benchmark � = Standard Network Stability metric for a Telecom Primary Reference Clock (PRC) � = GPS � = Cs Will eLoran step up to the mark? Used two test setups…. Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 11 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  12. Test Set-up #1 – Lab Test Bench Universal Tel GPS Rx Counter Timer Universal Cs Ref GPS Engine Counter Timer Universal Loran Rx Counter Timer Laptop runs “TimeMonitor” with GPIB interface to UCTs Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 12 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  13. Test Set-up #2 – Web Enabled Testing SyncWatch Tel GPS Rx Probe Cs Ref SyncWatch Loran Rx Probe Viewer retrieves Probes send data using data to a central standard web Server via browser GPRS or LAN. Internet www.syncwatch.com Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 13 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  14. Test setup Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 14 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  15. TIE Data – GPS Rx (x2) v Loran Rx – Test Setup #1 3 - Loran 30 nsec/div Lab Cs Offset � 1.3 x 10 -12 2 - Telecom 1 - Low Cost Quality GPS Rx GPS Engine Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 15 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  16. Test results - MTIE 1 - Low Cost GPS Engine 3 - Loran 2 - Telecom Quality GPS Rx Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 16 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  17. Long Term Testing using Test Setup #2 Steady State Data. Catch Transients for later Data can be viewed study, refine on firmware www.syncwatch.com. Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 17 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  18. ILA38 Portland, Maine, USA The Loran community is very much alive � 2 Days of Papers, 60 Delegates Review of Hardware Supply (excluding China and Russia) � Two major transmitter manufacturers � Megapulse � Nautel � One Global Tx System Integrator � Ursanav � One Supplier of the Tx Loran Timing Suite � Symmetricom � Two Receiver manufacturers � Reelektronika � CrossRate � R&D � Various Academic & R&D Projects Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 18 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  19. Loran & Politics Basic Stance � Obama wants to shut off Loran-C. � Administration has not taken a stance on eLoran. Current Law (signed Oct 2009) � Department of Homeland Security (DHS) Appropriations � If Commandant of the Coast Guard certifies that Loran-C is not needed for maritime navigation; and � Secretary of DHS certifies that the Loran-C infrastructure is not needed for a backup to GPS. � Then Loran-C can be shutoff on Jan. 4, 2010. Including selling all equipment and land associated with Loran-C. Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 19 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  20. Loran & Politics (continued) Ongoing Debate: Is eLoran going to be the backup to GPS? � Solid support for this in Congress. � PNT Executive Committee and PNT Advisory Board strongly recommend eLoran as the backup to GPS. Question Remains in U.S. � Will the Secretary of DHS ignore the scientific/technical recommendations and terminate Loran-C and with it eLoran? Confused? US Government Position � http://pnt.gov/policy/legislation/bills.shtml#loran Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 20 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

  21. GAARDIAN GNSS AVAILABILITY ACCURACY RELIABILITY anD GPS INTEGRITY ASSESSMENT Interference for TIMING and NAVIGATION Detection & Mitigation A Technology Strategy Board funded collaboration Charles Curry, B.Eng, FIET MD – Chronos Technology Ltd Chronos Technology Ltd , Stowfield House, Upper Stowfield, Lydbrook, Gloucestershire, GL17 9PD 02/12/2009 21 www.chronos.co.uk T: +44 (0) 1594 862200, F: +44 (0) 1594 862211

Recommend

Accufix System Enhancements for eLoran PRESENTED BY: Presented to: NAV08/ILA37 London, UK

Accufix System Enhancements for eLoran PRESENTED BY: Presented to: NAV08/ILA37 London, UK

Accufix System Enhancements for eLoran PRESENTED BY: Presented to: NAV08/ILA37 London, UK Erik 28 October, 2008 Johannessen Overview Brief description of Accufix transmitter means of pulse generation and control eLoran evolving

490 views • 31 slides
GNSS eLoran combined receiver Dr Philip G Mattos October 2008 benefits for the mass

GNSS eLoran combined receiver Dr Philip G Mattos October 2008 benefits for the mass

GNSS eLoran combined receiver Dr Philip G Mattos October 2008 benefits for the mass market Motivation for adding eLoran to GNSS Receiver Backup for GNSS is great.but NOT the motivation Motive is GNSS indoor sensitivity. LORAN

275 views • 24 slides
What is DTT? DTT stands for digital terrestrial television (or digital terrestrial transmission).

What is DTT? DTT stands for digital terrestrial television (or digital terrestrial transmission).

What is DTT? DTT stands for digital terrestrial television (or digital terrestrial transmission). It refers to the broadcasting of terrestrial television in a digital format. Currently, terrestrial broadcasting in South Africa is broadcast in an

324 views • 28 slides
Control Task Timing and Quality of Control Anton Cervin Department of Automatic Control Lund

Control Task Timing and Quality of Control Anton Cervin Department of Automatic Control Lund

Control Task Timing and Quality of Control Anton Cervin Department of Automatic Control Lund University Sweden Joint work with Bo Lincoln, Dan Henriksson, Martin Andersson and Karl-Erik rzn Anton Cervin Control Task Timing and Quality of

507 views • 48 slides
Digital Terrestrial Television (DTT) Applies to broadcasts that are land based (terrestrial)

Digital Terrestrial Television (DTT) Applies to broadcasts that are land based (terrestrial)

Draft Framework for Digital Terrestrial Television Broadcasting in Trinidad and Tobago 15 15 th th Novemb ember er 2011 11 Ryan n James es Broa oadc dcast st Engine neer Telec lecommuni nication tions s Author ority ity of Trini

322 views • 17 slides
Group Repetition Interval Selection for eLoran Jan af 1 , Paul Williams 2 , Seung Gi Gug 3

Group Repetition Interval Selection for eLoran Jan af 1 , Paul Williams 2 , Seung Gi Gug 3

Group Repetition Interval Selection for eLoran Jan af 1 , Paul Williams 2 , Seung Gi Gug 3 , Sally Basker 2 and Franti ek Vejra ka 1 1 Czech Technical University in Prague 2 The General Lighthouse Authorities of the UK and Ireland 3

586 views • 21 slides
A Perspective on the Future of eLoran Presentation to the Royal Institute of Navigation NAV 08

A Perspective on the Future of eLoran Presentation to the Royal Institute of Navigation NAV 08

1 A Perspective on the Future of eLoran Presentation to the Royal Institute of Navigation NAV 08 & International Loran Association ILA 37 James T. Doherty Institute for Defense Analyses 29 October 2008 2 What This Is Not & What It

486 views • 22 slides
ILA 38 Conference October 15, 2009 Designing, Developing, and Deploying a Temporary eLoran

ILA 38 Conference October 15, 2009 Designing, Developing, and Deploying a Temporary eLoran

ILA 38 Conference October 15, 2009 Designing, Developing, and Deploying a Temporary eLoran System. By Charles Schue With thanks to Nautel, Inc. & Symmetricom, Inc. 1 The Tale of Two Markets Traditional Markets: (e)Loran Service

461 views • 28 slides
A New Perspective on Quality Evaluation for Control Systems with Stochastic Timing Maximilian

A New Perspective on Quality Evaluation for Control Systems with Stochastic Timing Maximilian

A New Perspective on Quality Evaluation for Control Systems with Stochastic Timing Maximilian Gaukler , Andreas Michalka, Peter Ulbrich and Tobias Klaus April 11th, 2018 Gaukler et al.: Quality Evaluation for Control Systems with Stochastic

1.16k views • 73 slides
Reliable GPS: Interference, Jamming and the Case for eLoran Paul Williams, Alan Grant and Sally

Reliable GPS: Interference, Jamming and the Case for eLoran Paul Williams, Alan Grant and Sally

Reliable GPS: Interference, Jamming and the Case for eLoran Paul Williams, Alan Grant and Sally Basker General Lighthouse Authorities of the United Kingdom and Ireland NAV 08 ILA 37 Royal Institute of Navigation Church House London 28-30

476 views • 34 slides
Optimising Global Connectivity by Submarine and Terrestrial Routes Terrestrial Routes Matching

Optimising Global Connectivity by Submarine and Terrestrial Routes Terrestrial Routes Matching

conference & convention enabling the next generation of networks & services Optimising Global Connectivity by Submarine and Terrestrial Routes Terrestrial Routes Matching Sergey Shavkunov Company TTK conference & convention

352 views • 16 slides
Jan 30 Terrestrial Forest Biomes of the World World Wildlife Fund Terrestrial Biomes and

Jan 30 Terrestrial Forest Biomes of the World World Wildlife Fund Terrestrial Biomes and

Jan 30 Terrestrial Forest Biomes of the World World Wildlife Fund Terrestrial Biomes and Biogeographic Realms of the World Olson et al. 2001 World Wildlife Fund Terrestrial Biomes and Biogeographic Realms of the World Biome - large-scale unit

913 views • 25 slides
ELoran and Amateur Radio - A Study in Co-existence Dr Paul Williams (The GLAs of the UK and

ELoran and Amateur Radio - A Study in Co-existence Dr Paul Williams (The GLAs of the UK and

ELoran and Amateur Radio - A Study in Co-existence Dr Paul Williams (The GLAs of the UK and Ireland) Professor David Last (Consultant to the GLAs) Dr Nick Ward (The GLAs of the UK and Ireland) Carrier-wave interference with Loran Amateur Radio

190 views • 17 slides
eLoran eLoran Mitchell J. Narins Mitchell J. Narins Chief Systems Engineer Chief Systems

eLoran eLoran Mitchell J. Narins Mitchell J. Narins Chief Systems Engineer Chief Systems

A Robust PNT Architecture is A Robust PNT Architecture is Federal Aviation Essential to Our Critical Essential to Our Critical Administration Infrastructure Infrastructure PNT was once a nicety PNT was once a nicety now

598 views • 40 slides
Timing Analysis Timing Path Groups and Types Timing paths are grouped into path groups

Timing Analysis Timing Path Groups and Types Timing paths are grouped into path groups

Introduction to Digital VLSI Logic Synthesis Timing Analysis Timing Path Groups and Types Timing paths are grouped into path groups according to the clock associated with the endpoint of the path. There is a default path group that

541 views • 18 slides
Chapter 9 Planetary Geology: Earth and the Other Terrestrial Worlds 9.1 Connecting Planetary

Chapter 9 Planetary Geology: Earth and the Other Terrestrial Worlds 9.1 Connecting Planetary

Chapter 9 Planetary Geology: Earth and the Other Terrestrial Worlds 9.1 Connecting Planetary Interiors and Surfaces Our goals for learning What are terrestrial planets like on the inside? What causes geological activity? Why

1.3k views • 98 slides
FORMAL MODELING AND VERIFICATION FOR TIMING PREDICTABILITY Mathieu Jan, Mihail Asavoae, Belgacem

FORMAL MODELING AND VERIFICATION FOR TIMING PREDICTABILITY Mathieu Jan, Mihail Asavoae, Belgacem

FORMAL MODELING AND VERIFICATION FOR TIMING PREDICTABILITY Mathieu Jan, Mihail Asavoae, Belgacem Ben Hedia ERTS 2020 Toulouse Outline of the talk Motivations and goals Timing anomalies in Worst-Case Timing Reasoning An example of a timing

286 views • 16 slides
Top 5 Timing Closure Techniques Greg Daughtry Correct Timing Constraints Analyze Before

Top 5 Timing Closure Techniques Greg Daughtry Correct Timing Constraints Analyze Before

Top 5 Timing Closure Techniques Greg Daughtry Correct Timing Constraints Analyze Before Doing Implementation Strategies and Directives Congestion and Complexity Advanced Physical Optimization Create Good Timing Constraints

659 views • 31 slides
X-ray ray Timing and Timing and Polarizati Polarization on mi missi ssion & & inst

X-ray ray Timing and Timing and Polarizati Polarization on mi missi ssion & & inst

X-ray ray Timing and Timing and Polarizati Polarization on mi missi ssion & & inst strumen mentation DONG Y Yongw ngwei Center fo r for r Parti rticle A Astroph trophysics Ins nstitute o of High Ene igh Energy P gy

437 views • 15 slides
Timing and Coordination Essential Knowledge 2.E.2 and 2.E.3 Timing and Coordination Timing

Timing and Coordination Essential Knowledge 2.E.2 and 2.E.3 Timing and Coordination Timing

Timing and Coordination Essential Knowledge 2.E.2 and 2.E.3 Timing and Coordination Timing and coordination of physiological events are regulated by multiple mechanisms ( 2.E.2 ) Timing and coordination of physiological events are

598 views • 37 slides
LCCMR ID: 128-E Project Title: Controlling Terrestrial Invasive Plants with Grazing Animals

LCCMR ID: 128-E Project Title: Controlling Terrestrial Invasive Plants with Grazing Animals

Environment and Natural Resources Trust Fund 2011-2012 Request for Proposals (RFP) LCCMR ID: 128-E Project Title: Controlling Terrestrial Invasive Plants with Grazing Animals Category: E. Aquatic and Terrestrial Invasive Species Total Project

354 views • 6 slides
A Highly Compressed Timing Macro-modeling Algorithm for Hierarchical and Incremental Timing

A Highly Compressed Timing Macro-modeling Algorithm for Hierarchical and Incremental Timing

A Highly Compressed Timing Macro-modeling Algorithm for Hierarchical and Incremental Timing Analysis Tin-Yin Lai, and Martin D. F. Wong March. 16, 2018 Outline Introduction Timing Macro-modeling Problem Formulation Previous

397 views • 23 slides
Digital Terrestrial Television in Australia ITU International Symposium on the Digital

Digital Terrestrial Television in Australia ITU International Symposium on the Digital

Digital Terrestrial Television in Australia ITU International Symposium on the Digital Switchover 17 June 2015 1 Digital Terrestrial Television in Australia Contents Television service areas Timetable, DTTB implementation and

264 views • 14 slides
Digital Design Discussion: RTL Storage Components Shift Register Timing Register File Timing

Digital Design Discussion: RTL Storage Components Shift Register Timing Register File Timing

Principles Of Digital Design Discussion: RTL Storage Components Shift Register Timing Register File Timing RAM Up/Down Counter FIFO Queue Shift Register Timing Problem: Complete the timing diagram for the shift register shown. Assume

302 views • 12 slides

More recommend