LORAN Modernization Loran Data Channel Mr. Raymond Agostini International Loran Association Orlando, FL October 15, 2007.

Slides:

Advertisements

Similar presentations

1 Loran-C Maintenance Support Presentation at the 31 st Annual Convention and Technical Symposium of the International Loran Association October 28, 2002.

Advertisements

GROUND BASED AUGMENTATION SYSTEM System Overview Christophe DEHAYNAIN Direction Générale de l’Aviation Civile FRANCE.

Using Seasonal Monitor Data to Assess Aviation Integrity Sherman Lo, Greg Johnson, Peter Swaszek, Robert Wenzel, Peter Morris, Per Enge 36 th Symposium.

1 1 COMPASS Satellite Navigation System Development Nov. 26 th -28 th, 2008, Beijing China Satellite Navigation Project Center SIDEREUS 2008.

Long RAnge Navigation version C

U.S. COAST GUARD NAVIGATION CENTER FY 2003 LORAN PERFORMANCE LCDR MAX CARUSO, NAVCEN OPS.

Feasibility of Increasing Loran Data Capacity using a Modulated Tenth Pulse Benjamin Peterson Peterson Integrated Geopositioning International Loran Association.

Differential Loran Ben Peterson, Ken Dykstra & Peter Swaszek Peterson Integrated Geopositioning & Kevin Carroll, USCG Loran Support Unit Funded by Federal.

Applications of Differential Loran- C 32nd Annual ILA Meeting A review of USCG R&D Differential Loran-C Study by LT D.S. Taggart by Mr. Douglas.

Session 2 LAND SURVEYING EQUIPMENTS Course: S0663 – Land Surveying Year: 2007.

Transitioning to Time of Transmission Control in the U.S. Loran System ILA 2003 Boulder, CO Mr. Gene Schlechte CAPT Curtis Dubay, P.E. U. S. Coast Guard.

The Game Plan for Loran-C Modernization John J. Macaluso U. S. Coast Guard Mitchell J. Narins U. S. Federal Aviation Administration International Loran.

Pseudolite Network for Space Users A GPS Augmentation Study for NASA Headquarters Code M-3 Thomas R. Bartholomew Kevin L. Brown Al Gifford.

Avionics Engineering Center Characterization of Atmospheric Noise in the Loran-C Band Presented to the International Loran Association (ILA-32) November.

Introduction to NAVSTAR GPS Introduction to NAVSTAR GPS.

Avionics Engineering Center ILA-36 Orlando, FL October 2007 Computer Modeling of Loran-C Additional Secondary Factors Janet Blazyk, MS David Diggle, PhD.

Mauro Vieira de Lima Novembro 2014 eLoran and eDLoran.

Introduction to the Global Positioning System Introduction to the Global Positioning System Pre-Work GPS for ICS

Patrick Caldwell Chris Kellar. Overview  Basic Concepts  History  Structure  Applications  Communication  Typical Sources of Error.

LORAN C By Farhan Saeed.

How Global Positioning Devices (GPS) work

Mitigation of the Effects Early Skywaves Ben Peterson, Peterson Integrated Geopositioning & Per Enge, Stanford University Funded by Federal Aviation Administration,

ELoran Maritime Service Provision: Initial Thoughts By Dr Sally Basker, Professor David Last, Dr Paul Williams Date: International Loran Association, Orlando,

USNO Report CGSIC Timing Subcommittee April 19, 2002 Lisa Nelson Time Service Department ; DSN

V-1 Common-View LORAN-C for Precision Time and Frequency Recovery Tom Celano, Timing Solutions Corp LT Kevin Carroll, USCG Loran Support Unit Michael Lombardi,

V-1 TFE: The New Heartbeat of Loran T. P. Celano, Timing Solutions Corporation LT Kevin Carroll, Loran Support Unit.

Multiplexing GPS & eLoran on single RF cable for retrofit installations Benjamin Peterson Peterson Integrated Geopositioning International Loran Association.

Electronic Navigation Chapter 23. Many Toys Speed up and make easier many tasks Tools are better with knowledge Common: –VHF –Depth Sounder –RADAR –LORAN.

Loran Integrity Performance Panel The Loran Integrity Performance Panel Sherman Lo, Per Enge, & Lee Boyce, Stanford University Ben Peterson, Peterson Integrated.

A Preliminary Study of Loran-C Additional Secondary Factor (ASF) Variations International Loran Association 31st Annual Convention And Technical Symposium.

Introduction to the Global Positioning System Introduction to the Global Positioning System Pre-Work GPS for Fire Management

1 Nationwide Differential GPS (NDGPS) Real-Time Data Streaming Federal Geodetic Control Subcommittee Silver Spring, MD January 10, 2012 Timothy A. Klein.

Nationwide Differential Global Positioning System (NDGPS) – Capabilities and Potential Presentation to: Civil GPS Service Interface Committee (CGSIC) U.S.

Differential eLoran Reference Station for Maritime and Precise Time Applications Gerard Offermans, Arthur Helwig, Reelektronika NL International Loran.

EGNOS TRAN: Broadcasting EGNOS messages over the Eurofix Datalink

Protecting GPS Transportation Infrastructure – Action Plan Status Report 43rd CGSIC Meeting Washington, DC March 10, 2004  CDR Peter Keane U.S. Department.

October 29, 2002 International Loran Association Design and Test of the First Article Accufix 7500 Transmitter Presented by Mark Danieli.

Making a Silk Purse from a Sow’s Ear, Loran Style David H. Gray Canadian Hydrographic Service Ottawa Disclaimer: The opinions expressed in this paper are.

Getting a Bearing on ASF Directional Corrections 32 nd Annual Technical Symposium International Loran Association 5 Nov 2003 Boulder, CO.

Nationwide DGPS Project Status. Presenter’s Name June 17, 2003 October 16, NAVCEN Mission Statement The Coast Guard Navigation Center promotes.

09/15/08 1 Nationwide Differential Global Positioning System (NDGPS) Status Presentation to: 48 th Civil GPS Service Interface Committee (CGSIC) Meeting.

New Timing and Control Equipment At LSU Wildwood, NJ.

James T. Doherty Institute for Defense Analyses 16 October 2007

Enhanced LORAN Receiver (ELR) Kirk Montgomery – Symmetricom/Advanced Timing Solutions 2007 Convention and Technical Symposium - ILA-36 Orlando, Florida.

Loran Integrity Performance Panel Scalable Modulation for Loran Sherman Lo, Ben Peterson Second LORIPP Meeting Portland, OR September 23-24, 2002.

GPS Augmentations and Enhanced Loran: Infrastructure Precision and Reliability Asia GNSS Workshop Seoul, Korea - November 4, 2004 

USCG Navigation Center & Nationwide DGPS Project Status.

CGSIC Timing Subcommittee March 11, 2004 USNO Report U.S. Naval Observatory Washington, DC Francine Vannicola

LOng RAnge Navigation- LORAN, (Class II navigation) AST 241 Dr. Barnhart.

LORAN TRANSITION Briefing to National PNT Advisory Board Captain Curtis Dubay, PE Department of Homeland Security U. S. Coast Guard Friday, October 5,

1 Loran-C User Position Software (LUPS) Navigation Performance with the August 2001 Cross-Country/Alaska Flight Test Data Jaime Y. Cruz and Robert Stoeckly.

Status – U.S. Maritime Backup Issues Session 2, 28 October 2002 –Status & Plans of LORAN-C Service Providers 31st Annual Convention & Technical Symposium.

Data Capture Initiatives and Stimulus Benefits IMSF Spring Conference New Orleans, LA, USA 5 May 2009 Doug McDonald, US Army Corps of Engineers.

ILA 36 – Orlando Florida October 2007 Dr. Gregory Johnson, Ruslan Shalaev, Christian Oates, Alion Science & Technology Capt. Richard Hartnett, PhD,

Nationwide DGPS Project Status Presentation to CGSIC 43 nd Meeting March 10, 2003   CAPT Curtis Dubay U.S. Coast Guard.

Loran Integrity Performance Panel The Loran Integrity Performance Panel (LORIPP) The LORIPP Team Loran Team Meeting McLean, VA July 30, 2002.

F E D E R A L A V I A T I O N A D M I N I S T R A T I O N A I R T R A F F I C O R G A N I Z A T I O N Loran Update Mitchell Narins (US FAA) G. Thomas Gunther.

“An Investigation into the Temporal Correlation at the ASF Monitor Sites” by Prof. Peter Swaszek, URI/USCGA Dr. Gregory Johnson, Alion Capt. Richard Hartnett,

1 Purpose of the Evaluations To determine whether Loran-C can provide the: Accuracy Availability Integrity Continuity, and Coverage to support Lateral.

Seung-gi GUG Korea Maritime University Chairman of FERNS TWG Seung-gi GUG Korea Maritime University Chairman of FERNS TWG 24 th -25 th, Sept., 2007 STATUS.

“Status of the Loran Recapitilization Project” FAA Team Meeting – July 2002 CDR G. K. Weeks Jr., U. S. Coast Guard, Commanding Officer USCG Loran Support.

Transmitter Performance Section Participants –LSU –NAVCEN –NAVCEN (West) –Peterson Integrated Geo-positioning, Inc –BAH LORIPP Meeting #2 Portland, OR.

Modernizing Loran Command and Control U.S. Coast Guard Loran Support Unit Pacific Ave. Wildwood, NJ Raymond Agostini James R. Betz International.

Distance Measuring Equipment (DME)

Fixing systems using radio frequencies (NavStar GPS and LORAN C)

Introduction The uses of a DME DME Equipment How DME work? Advantages of DME Disadvantages of DME.

Data Collection Effort Objectives Time of Transmission (TOT) monitors Time of Arrival (TOA) monitors Pulse Analysis Measurements re UTC, & sign of delay.

LORAN LOng RAnge Navigation.

LORAN-A N.S.Balaji( ) Dhada peer mohammed( )

Loran c R.Ezhilarasan( ) R.Dinesh( )

Presentation transcript:

LORAN Modernization Loran Data Channel Mr. Raymond Agostini International Loran Association Orlando, FL October 15, 2007

Introduction Loran Today Loran Modernization – Achievements –Lorsta & Consta Electronics Recapitalization –Time Of Transmission (TOT) Control –Loran Data Channel (LDC) – Differential Loran Loran Modernization – Expectations –Remaining Recapitalization –eLoran: LDC Coverage Expansion –eLoran: Differential Loran Trials

LORAN-C Today 100 kHz, ground wave, high-power ( kW) Delivers timing info & 2-D position Affected by propagation path and weather Manual steering to 100-ns of UTC Not yet “All that it can be” –Discontinuities (time steps) –Chains & SAM control (does not enable all-in-view receivers) Transitioning to TOT Control –500-meter horizontal system –No Gov’t statement = industry reluctance

North American Loran System TTX Stations: 5 US, 1 Canadian New Control Stations New SSX Stations:6 New SSX Stations: 6 US LSU 04 SSX Stations: 0 US, 4 Canadian SSX Stations w/New TFE: 13 US New building accepted on St. Paul!

New Loran-Station Electronics New Solid State Transmitter (NSSX) New Timing & Frequency Equipment (NTFE)

Building HVACExterior fuel tank/GENSET Facilities Installation

Canadian Control Upgrade New Consolidated Control System (NLCCS) New LORSTA Comms Equipment, Receivers and RAIL Computers

Loran Data Channel Information modulated on a 9 th Pulse Preserves navigation information on pulses 1-8 Prototyped with solid-state transmitters Differential corrections from monitors Other possible techniques (Eurofix, “10 th ” Pulse) Secondary Master Master Pulse Modulated (9 th ) pulse

“9 th Pulse” Loran Data Channel

LDC Broadcast Lorstas: 3 Enhanced-Loran monitors: 9 Enhanced Loran Timing Test Beds Ft. Monmouth Sandy Hook LSU USNO NRL Volpe URI Cape Canaveral Lorsta Jupiter, FL Lorsta Seneca, NY Lorsta Las Cruces, NM White Sands

Coverage of Loran Data Channel Testing

Differential Loran Land-path signal delays (spatial) –Land propagation path introduces signal delays called “additional secondary factors (ASF)” –Provider needs to survey each waterway for ASFs beforehand –User receiver stores waterway’s spatial ASFs beforehand Weather-path signal delays (temporal) –Provider’s shore-side monitor calculates corrections in real-time Loran Data Channel “9 th Pulse Comms” –Provider modulates monitor info onto Loran signal & sends to user Differential-Loran user receiver –User’s receiver applies spatial ASFs –User’s receiver demodulates & applies temporal corrections –Differential-Loran improves position accuracy significantly It works!

Differential Loran (cont’d) Differential Corrections –LORSTA Seneca, NY –8 monitor sites (USCGA, Volpe, URI, FAA Tech Center, Ohio U, CGSta Pt. Allerton, LSU, USNO) LDC Format –Comms Ver 1.3 mod 1 New London Demo’s –Dec ’06 and Apr ‘07

Summary AchievementsAchievements –All CONUS Lorstas and Control Centers modernized New Timing & Frequency Equipment at 11 LorstasNew Timing & Frequency Equipment at 11 Lorstas –1 st AK recap accomplished & 2 nd nearing completion –NEUS and GLKS transitioned to TOT Control –Differential Loran & 9 th Pulse demonstrated in real time Next StepsNext Steps –Continue AK modernizations (funding dependent) –LDC research and broadcasts continue –Automation / unstaffing

The views expressed in this briefing are those of the author and are not to be construed as official or reflecting the views of the U. S. Coast Guard, the Department of Homeland Security, or the U. S. Government.

Questions? Mr. Raymond Agostini, USCG Technical Director, USCG Loran Support CDR Chris Nichols, USCG Commanding Officer, USCG Loran Support Unit