• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2001.10a
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• pp.6-12
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• 2001

Korea government decided to provide the NDGSP service and the conceptional design report are presented here. The coverage of the exiting MDGPS stations of inland area is measured and the positions and characteristics of additional inland NDGPS sites are proposed for the full-coverage of inland areas of Korea.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2001.10a
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• pp.7-12
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• 2001

Korea government decided to provide the NDGSP service and the conceptional design report are presented here. The coverage of the exiting MDGPS stations of inland area is measured and the positions and characteristics of additional inland NDGPS sites are proposed for the full-coverage of inland areas of Korea.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.07a
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• pp.133-135
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• 2015

다른 응용분야에 비하여 소략적인 성능을 요구했던 해양 분야에서도 최근들어 항만 영역에 따라 수치적으로 구체화된 성능을 요구하고 있고, 측위 정확도뿐만 아니라 무결성, 연속성, 가용성 면에서도 보장을 요구하고 있다. 현 DGPS 기준국의 서비스를 사용하는 사용자 입장에서, DGPS 서비스는 아직 IMO에서 요구하는 성능을 모두 만족시키기에 불충분하다. 특히, HEA 영역에서 요구하는 측위 정확도 수준은 만족하나 무결성 측면에서는 성능을 보장할 수 없다. 본 논문에서는 기존 DGPS 기준국의 감시, 보장, 공지 기능을 강화하여 무결성 측면에서 보강하기 위한 향상된 감시 기법을 제안하고자 한다. 이를 위하여 현재 DGPS 서비스 감시 기능의 취약점을 제시하고 이에 대한 영향을 분석하였으며 이를 토대로 대책을 마련하였다. 본 연구결과는 추후 DGPS 서비스 개선을 위한 기초연구로 활용할 수 있을 것이다.

• Journal of Navigation and Port Research
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• v.40 no.1
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• pp.21-26
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• 2016

Even in the marine industry was required the looser positioning performance as compared to other application domain, a high-quality positioning performance and reliability are becoming ever more important. The high-quality performance includes not only accuracy but also integrity, continuity, and availability. However, current DGPS service is not satisfying the minimum positioning performance requirements for maritime user proposed by IMO. Especially, no one can guarantee the required integrity performance by DGPS service. This paper presents the advanced monitoring concept to strengthen the performance of current DGPS through the enhanced monitoring, guarantee and notice functions. To this, the limitations of the integrity monitoring function of current DGPS are analyzed, and a countermeasure is prepared to improve the limitations of the current integrity monitoring function. This paper can be applied as basis research to improvement of the DGPS service.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.06a
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• pp.55-59
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• 2009

In a base on the MDGPS base station which has been operated since 1999; our country has completed the construction of six Land Base Stations to use of NDGPS in land from starting Mu-Ju base station in 2002 to Chun Cheon base station which is going to be operated on July 2009. Accordingly, with the exception of the Chun-Cheon base station because it is being built now, we will consider a better direction of improvement in service for land base station after surveying and analyzing on the signal characteristic of land base station.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.279-282
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• 2015

Fisheries development of the basic law pursuant to article 15 (marine safety management, etc.) one of maritime safety and maritime traffic facilities nationwide network of DGPS in accordance with the building maximize infrastructure utilization and country. Source technology has been improving steadily raised for the benefit daegukmin. In particular, look at the type of product for the marine supply medium-wave receiver Performance products that satisfy most of the IMO Advisory. The antenna and receiver are separate structural supply for some integrated model with a very high Rather it is used as a portable receivers for marine positioning cheap integrated model development is needed. Correction of satellite navigation receivers for the current Marine GPS module, medium-wave modules can be developed one low cost Integrated in independent operating environments do not support the model development done look at what the problem is 285kHz ~ 315kHz in DGPS Beacon receiver structure using a medium wave or Beacon The medium-wave antenna and a GPS receiver signal to noise ratio was studied GPS signal attenuation on the DGPS performance looked at each GPS manufacturer medium-wave signal-to-noise ratio and normalized impact by GPS manufacturers noise power ratio per bandwidth for medium-wave GPS signals affect it was implemented to improve performance.