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"SDN:L05::POS12" .
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"{\"node\": {\n \"mode\": \"hyperbolic or circular\",\n \"notes\": \"Navigation and positioning system for the North Sea petroleum industry.\",\n \"range\": \"400km hyperbolic; 75-100km circular\",\n \"accuracy\": \"better than 2m below horizon (10m above horizon)\",\n \"operational\": \"1980s to 1995\",\n \"frequency\": \"420-450MHz\"\n}}"@en .
"Système leger de measure de distance receivers"@en .
"Syledis" .
"Syledis"@en .
"accepted"@en .
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