出典:Wikipedia
出典:『Wikipedia』 (2010/01/29 07:28 UTC 版)
Syledis (SYstem LEgere pour mesure le DIStance) was a terrestrial radio navigation and locating system. The system operated in the UHF segment of 420-450 MHz. Operational during the 1980s and until about 1995, it provided positioning and navigational support for the petroleum sector in the North Sea.