GNSS Positioning of Ocean Buoys in Japan for Disaster Prevention

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F11%3A00204445" target="_blank" >RIV/68407700:21110/11:00204445 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

GNSS Positioning of Ocean Buoys in Japan for Disaster Prevention

Popis výsledku v původním jazyce

Japan is an island nation hit by frequent earthquakes, tsunamis, and severe storms. Several government agencies have thus deployed an array of ocean buoys in the seas surrounding Japan. We have succeeded to monitor tsunamis induced by several earthquakeswith GPS buoys deployed within 20 km from the coast using RTK. The short distance limitation of RTK only gives us a very short warning period for residents near the shore. Because tsumani wave height are smaller in the deeper ocean, the accuracy requirements for GPS tsumani buoys is about 5 cm rms in the open ocean. Therefore we developed a real-time PPP-ambiguity resolution (PPP AR) correction system for tsunami height monitoring in Japan. Because we need to avoid coordinate errors in the reference network due to earthquake induced deformation it is desirable to base the PPP AR corrections on small networks at great distances from the buoys. For testing, a small network in northern Japan was used as server network. We use both buoy an

Název v anglickém jazyce

GNSS Positioning of Ocean Buoys in Japan for Disaster Prevention

Popis výsledku anglicky

Japan is an island nation hit by frequent earthquakes, tsunamis, and severe storms. Several government agencies have thus deployed an array of ocean buoys in the seas surrounding Japan. We have succeeded to monitor tsunamis induced by several earthquakeswith GPS buoys deployed within 20 km from the coast using RTK. The short distance limitation of RTK only gives us a very short warning period for residents near the shore. Because tsumani wave height are smaller in the deeper ocean, the accuracy requirements for GPS tsumani buoys is about 5 cm rms in the open ocean. Therefore we developed a real-time PPP-ambiguity resolution (PPP AR) correction system for tsunami height monitoring in Japan. Because we need to avoid coordinate errors in the reference network due to earthquake induced deformation it is desirable to base the PPP AR corrections on small networks at great distances from the buoys. For testing, a small network in northern Japan was used as server network. We use both buoy an

Druh

D - Stať ve sborníku

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 24th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS 2011)

ISBN

978-1-61839-475-0

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

717-723

Název nakladatele

Institute of Navigation

Místo vydání

Washington

Místo konání akce

Portland

Datum konání akce

20. 9. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000304032000053