32 nd International Loran Association November 3-7, 2003 FERNS Status and Future Tamotsu Ikeda Erik Johannessen Linn Roth

32nd International Loran Association November 3-7, 2003

FERNS Status and Future

Tamotsu Ikeda

Erik Johannessen

Linn Roth


What is FERNS ?

The Far East Radionavigation Service (FERNS) The agreement made on the 22nd December 2000, Between People’s Republic of China, Japan, Republic of Korea, and Russian Federation

On an international program for the establishment of a joint radionavigation service in Far Eastern waters of Loran C and Chayka station


Coverage

100° 140°110° 130°120° 170°150° 160° 180°

20°

30°

40°

50°

AttuPetropavlovsk

Alexandrovsk

Tokatibuto

Niijima

MinamitorishimaGesashi

RaopingChongzuo

Hexian

Xuancheng

Rongcheng

Helong

Okhotsk

Pohang

Kwangju

Ussuriisk


During the week of 29 Sep. to 3 Oct. 2003 FERNS held the

12th session of The Council of the Far East Radionavigation Service

and as a special program:

Meeting of Experts on the Back up System of GPS


Council Discussion and Considerations Included:

Presentation by each country on operational status

Coordination of off airs planned for 2004 Discussion of other services (i.e. N/DGPS) Technical matters for coordination

System enhancements Eurofix Need for appropriate receiver technology


The background

Members gave the background to the problems being experienced in the Country by the reduction of users of Loran C and explained that they were of the opinion that the introduction of Eurofix functions to FERNS chains and the introduction of a hybrid GPS/Loran C would probably attract significantly more users. The presentation also made reference to the discussion on this subject at the 9th FERNS Council Session held in 2000 and the agreement then that a decision on the matter would be made at the 10th Session


Meeting of Experts

Sponsored by Ship and Ocean Foundation of Japan Volpe report has given international recognition to

GPS vulnerability Goals of the meeting

Ideas on international standards and cooperation Exchange of opinion with people related to maritime affairs

and receiver manufacturers Format of the meeting

6 full presentations Panel discussion


MARITIME RADIONAVIGATIONMeasures taken by International Organizations

Mr. Torsten Kruuse

IALA Secretary General


Vulnerability Assessment

of the Maritime

Transportation

Relying on GPSMr. Stewart Shoulta

Far East Radionavigation Service Council Session

Tokyo, Japan - October 1, 2003


Ongoing Loran Evaluations at theFederal Aviation Administration and theUS Coast Guard Mitchell J. NarinsSystems EngineerFederal Aviation AdministrationNavigation Integrated Product Team

12th FERNS COUNCIL – EXPERTS MEETING1 October 2003Tokyo, Japan

Presented by Erik Johannessen – LORIPP Member

Original Brief July 23, 2003AND Program Management Review - FAA Headquarters, Washington, DC


”Present situation and subjects of NELS - Loran C in Europe - vulnerability of GPS”

By Kirsten Ullbæk Selvig

Chairmann Northwest European Loran C system - NELS


Meeting of experts on the vulnerability and back up systems of GPS

The French proposal

Tokyo, 29 September, 1-3 October 2003 Jacques MANCHARD METLTM-DAMGM Lighthouses and Buoys Division


Loran in 2003 and Beyond -Standardization of Loran as the Most

Complementary, Necessary Backup to GNSS

by

G. Linn Roth, Ph.D., FRIN

President

International Loran Association


Panel Discussion


Definition of GNSS backup system

During the expert meeting held on 1st Oct concerning the vulnerability of GPS the question was raised whether there is a need for a common understanding on a definition of a backup system. The question was addressed to FERNS, USCG and NELS.

On the initiative of the Chairman of NELS it was decided to arrange for an informal discussion on the matter during lunchtime on 2nd Oct.

Vulnerability of GPS ought to be replaced by vulnerability of GNSS, in more detail the need for a backup system/the need for more than one available system, the difference between backup system and augmentation system, minimum requirements to Loran C as a backup system and additional functions, the situation in each of the countries/ organisations.

It was clear that a critical point for a backup system is the users/the lack of users.


The Following Definitions were Presented:

A truly REDUNDANT system provides the same functionality as the primary system, allowing a seamless transition with no change in procedures;

A BACK-UP system ensures continued operation, but not necessarily with the full functionality of the primary system and may necessitate some change in procedures by the user;

A CONTINGENCY system allows safe completion of a manoeuvre, but may not be adequate for long-term use.

Recognizing the importance of the matters covered under the discussion, the variety in the approach and the need for a more thoroughly analysis: It was agreed that to have a global approach, IALA should arrange for a meeting to provide further analysis and discussion on the matters.

It was also recognised that the analysis should be performed as soon as possible.


Following Activity

Agreed that a meeting addressing the “Future of Loran-C/Chayka in a GNSS environment” would be held in Korea on November 27 and 28, subsequent to the Symposium on 100 years of aids to navigation services of Korea.

NELS, the USCG, IALA and Canada would be invited to be represented at the meeting which would consider the extent of the risk to GNSS by deliberate interference, and: What is understood by a back-up to GNSS? Does GNSS need a back-up? If so, what is the justification? Do Loran-C and Chayka qualify to provide the services required?

Documents

32 nd International Loran Association November 3-7, 2003 FERNS Status and Future Tamotsu Ikeda Erik Johannessen Linn Roth