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ÇѱÛÇ¥Áظí ÇØ»óÀ̵¿ ÀÌ¿ëÀÚ¸¦ À§ÇÑ ÀÚµ¿ HF Æѽùи®¿Í µ¥ÀÌÅÍ ½Ã½ºÅÛ
¿µ¹®Ç¥Áظí Automatic HF facsimile and data system for maritime mobile users
Çѱ۳»¿ë¿ä¾à ÀÌ Ç¥ÁØÀº DSC¸¦ »ç¿ëÇÏ´Â ÇØ»óÀ̵¿¾÷¹«¸¦ À§ÇÑ ÀÚµ¿ ´ÜÆÄ Æѽùи®¿Í µ¥ÀÌÅÍ ½Ã½ºÅÛÀ» Á¦°øÇÑ´Ù. ÇØ»óÀ̵¿ »ç¿ëÀÚ¿Í PSTNÀ» »ç¿ëÇÏ´Â °íÁ¤ »ç¿ëÀÚ »çÀÌ¿¡¼­´Â Æѽùи®¸¦ Æ÷ÇÔÇÑ È£Ãâ ¼³Á¤°ú µ¥ÀÌÅÍ Àü¼ÛÀ» À§ÇÑ ½Ã½ºÅÛ Æ¯¼º°ú ¿î¿ë ÀýÂ÷¸¦ Á¦°øÇϸç, ÇØ»óÀ̵¿ »ç¿ëÀÚ¿Í °ÔÀÌÆ®¿þÀÌ »çÀÌ¿¡¼­ Ãʱâ Á¢¼ÓÇϴµ¥ »ç¿ëÇÏ´Â DSC ¸Þ½ÃÁöÀÇ ³»¿ëÀ» Á¦°øÇÑ´Ù. ¶ÇÇÑ Åë½Å ä³ÎÀ» ÅëÇÏ¿© ÇØ»óÀ̵¿ »ç¿ëÀÚ¿Í °ÔÀÌÆ®¿þÀÌ »çÀÌ¿¡¼­ »ç¿ëµÇ´Â ¸Þ½ÃÁöÀÇ ±¸Á¶¿Í ¿¡·¯ ¼öÁ¤ ÇÁ·ÎÅäÄÝÀ» Á¦°øÇϸç, DSC¿Í HF µ¥ÀÌÅÍ ¸ðµ©ÀÇ ±â¼úÀû Ư¼ºÀ» Á¦°øÇÑ´Ù.
ÇØ»óÅë½Å¿¡¼­ ¿ø°Å¸® Åë½Å¸ÁÀ¸·Î ÀÌ¿ëµÇ°í ÀÖ´Â ÇØ»ó HF´ë¿ªÀº ÁÖ·Î ¹«¼±ÀüÈ­¿¡ ÀÌ¿ëµÇ°í ÀÖ°í, µ¥ÀÌÅÍÀÇ Àü¼Û°ú Æѽùи®´Â ÁÖ·Î Åë½Å¿ä±ÝÀÌ ³ôÀº À§¼ºÅë½Å¸Á(Inmarsat)À» ÀÌ¿ëÇÏ°í ÀÖ´Â ½ÇÁ¤ÀÌ´Ù. »ç¿ë È¿À²ÀÌ ³·Àº ´ÜÆĴ뿪À» ÀÌ¿ëÇÏ¿© µ¥ÀÌÅÍ ¹× Æѽùи®ÀÇ Àü¼ÛÀ» DSC¶ó´Â ÀÚµ¿È£Ãâ ¼³Á¤±â´ÉÀ» ÀÌ¿ëÇÏ¿© ºñÈ¿À²ÀûÀÎ ÇØ»ó´ÜÆÄ ÁÖÆļö´ë¿ªÀ» ±âÁ¸ÀÇ ¹«¼±¼³ºñ¸¦ »ç¿ëÇÏ¿© µ¥ÀÌÅÍ Àü¼Û¿¡ ÀÌ¿ëÇÔÀ¸·Î¼­ °æÁ¦ÀûÀÌ°í »ç¿ëÀÌ Æí¸®ÇÑ Æ¯¼º ¶§¹®¿¡ ´ÜÆÄÅë½ÅÀÇ ÀÇÁ¸µµ°¡ È®´ëµÉ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç ±¹Á¦Ç¥ÁØ°ú ¿¬°èÇÑ ±¹³»Ç¥ÁØÀ» Àû¿ëÇÏ¿© ±¹¿Ü ±¸¸Å ¹× ±¹³» ¿¬±¸°³¹ßÀÇ ±âÁØÀ¸·Î È°¿ëÇÒ ¼ö ÀÖ´Ù.
¿µ¹®³»¿ë¿ä¾à The standard provides the data system and automatic HF facsimile for maritime mobile service using digital selective calling (DSC) messages. It provides that the system characteristics and operational procedures for setting up calls and passing data messages including facsimiles between maritime mobile users and fixed users on the PSTN(Public switched telephone network), and that the contents of DSC messages used to establish the initial contact between the maritime mobile user and the gateway. It provides that the error correcting protocol and structure of the messages that are used to pass data between the maritime mobile user and the gateway over the working channel.
The maritime HF band, which is used in long-range telecommunications of maritime mobile service is mainly used for wireless telephones, and data transmission and facsimile are mainly used for satellite communication networks(Inmarsat) with high communication rates. DSC automatic setting up calls function to data system and facsimile in low-efficiency HF band, and data transmission using inefficient HF frequency band in existing wireless facilities have economical and easy-to-use characteristics. These advantages are expected to increase the dependence of HF communication and can be used as a standard for overseas product purchase and domestic R&D by applying domestic standards linked with international standards.
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