¼¼¿ùÈ£ ±Þº¯Ä§ ±¸°£¿¡ ¼¼¿ùÈ£ ¼Û½Å½Ã°£ ±âÁØ(08:49:13 - 08:52:01)À¸·Î 2ºÐ 48ÃÊ µ¿¾È Áö¼ÓµÈ AIS Message Type 3ÀÇ 'Áø½Ç'(?)¿¡ ´ëÇؼ ´Ù½Ã ³íÀÇÇÏ°íÀÚ ÇÑ´Ù.
¹«¾ùº¸´Ù ¸ÕÀú ¸»ÇØ¾ß ÇÒ °ÍÀº, ½ÃÁöÇÁ½º´Ô°ú °³µÅÁö´ÔÀÇ ÁÖÀåÀÌ ¿Ç¾Ò´Ù´Â °ÍÀÌ´Ù.
°³µÅÁö´ÔÀº 'AIS Message Type 1°ú AIS Message Type 3 »çÀÌÀÇ Àüȯ'¹®Á¦¸¦ ÁöÀûÇß°í,
½ÃÁöÇÁ½º´ÔÀº 'º¯Ä§±¸°£ÀÇ AIS Message Type 3'¿¡ ´ëÇؼ ÁÖÀåÇß´Â µ¥,
¾î¶»°Ô ±× ÁÖÀåÀ» ÇÏ°Ô µÇ¾ú´Â Áö
±× ÁÖÀå¿¡ ´ëÇÑ ³íÁõÀÌ °ÅÀÇ ¾ø¾úÀ» »Ó¸¸ ¾Æ´Ï¶ó
°ÅÀÇ ¹Ý´ë¸¦ À§ÇÑ ¹Ý´ë ¼öÁØ¿¡ ¸Ó¹°·¯ ÀÖ¾ú±â ¶§¹®¿¡ ³³µæÇϱⰡ ¾î·ÆÁö¸¸,
Àû¾îµµ ±× ÁÖÀåÀÇ Å¸´ç¼º¸¸ÅÀº ÀÎÁ¤ÇØ¾ß ÇÑ´Ù.
¹°·Ð ¼¼¿ùÈ£ ±Þº¯Ä§ ±¸°£ÀÇ AIS Message Type 3ÀÌ ¼¼¿ùÈ£ »ç°íÇØ¿ª ÀαÙÀÇ ¼±¹ÚÀ̳ª ±âÁö±¹¿¡¼ º¸³½ AIS Message Type 15(Interrogation for specific message)¿¡ ´ëÇÑ ÀÚµ¿ÀÀ´ä ¸Þ½ÃÁö¶ó´Â ³ªÀÇ ÁÖÀå¿¡ ´ëÇÑ ±×µéÀÇ ºñ³Àº ¿ÇÁö¸¸, AIS Message Type 3ÀÌ 'ƯÁ¤ ¸Þ½ÃÁö Àü¼ÛÀ» ¿äûÇÏ´Â ¸Þ½ÃÁö'(AIS Message Type 15)¿¡ ´ëÇÑ ÀÚµ¿ ÀÀ´ä ¸Þ½ÃÁö°¡ ¾Æ´Ï¶ó°í ÇÏ´Â ±×µéÀÇ ÁÖÀåÀº »ç½Ç°ú ´Ù¸£´Ù.
¼¼¿ùÈ£ ±Þº¯Ä§ ±¸°£¿¡ 2ºÐ 48ÃÊ µ¿¾È Áö¼ÓµÈ AIS Message Type 3Àº '5µµ ÀÌ»óÀÇ º¯Ä§½Ã Àü¼ÛµÇ´Â À§Ä¡Á¤º¸ ¸Þ½ÃÁö'ÀÏ °¡´É¼ºÀÌ Å©Áö¸¸ AIS Message Type 3Àº ¶ÇÇÑ 'ƯÁ¤ ¸Þ½ÃÁö Àü¼ÛÀ» ¿äûÇÏ´Â ¸Þ½ÃÁö'(AIS Message Type 15)¿¡ ´ëÇÑÀÚµ¿ ÀÀ´ä ¸Þ½ÃÁö'À̱⵵ ÇÏ´Ù.
½ÃÁöÇÁ½º´Ô°ú °³µÅÁö´ÔÀº ¹Ý´ë¸¦ À§ÇÑ ¹Ý´ë¸¦ À§Çؼ AIS Message Type 3ÀÇ 'Áø½Ç'(?)À» ºÎÁ¤Çß´Ù.Çϳª¸¦ ÀÎÁ¤Çϱâ À§Çؼ ¶Ç ´Ù¸¥ Çϳª¸¦ ºÎÁ¤Ç߱⠶§¹®ÀÌ´Ù.
³ª´Â Áö±ÝºÎÅÍ AIS Message Type 3ÀÇ 'Áø½Ç'(?)¿¡ ´ëÇÑ ½ÃÁöÇÁ½º´Ô°ú °³µÅÁö´ÔÀÇ ÁÖÀåÀ» ±×µé ´ë½Å¿¡ ³íÁõÇÏ°íÀÚ ÇÑ´Ù. ¹°·Ð AIS Message Type 3ÀÇ ¶Ç ´Ù¸¥ 'Áø½Ç'(?) ±îÁöµµ ÇÔ²² ¸»ÀÌ´Ù.
±×¸®ÇÏ¿© ±×µéÀÇ ÁÖÀåÀÌ ¾î°¼ ¿ÇÀº °ÍÀÎÁö¸¦, ±×µéÀÇ ÁÖÀåÀÌ ¾î°¼ À߸øµÇ¾ú´Â Áö¸¦ ½ÃÁöÇÁ½º´Ô°ú °³µÅÁö´ÔÀÌ ÀÌÇØÇÏ°Ô ÇÏ·Á Çϸç,¶ÇÇÑ ³ª ½º½º·Î¿¡°Ôµµ ¾îµÎ¿ü´ø 'Áø½Ç'ÀÇ ¹ÝÂÊÀ» °¡¸£Ä¡°íÀÚ ÇÑ´Ù.
----------À̾îÁü
Çϳª.
AIS Message Type 3˼
Áõ° ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(ITDMA)¹æ½ÄÀ» ÅëÇØ ¸Þ½ÃÁö¸¦ Àü¼ÛÇÑ´Ù.
¼±¹ÚÀÌ ¼Óµµ³ª ħ·Î¸¦ º¯°æÇÏ°Ô µÇ¸é Á¤º¸°»½ÅÁֱⰡ º¯ÈµÈ´Ù.
±× ¶§ ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡°¡ µ¥ÀÌÅ͸¦ Àü¼ÛÇϱâ À§Çؼ´Â
±âÁ¸¿¡ ÇÒ´çµÈ °Í°ú´Â º°µµÀÇ ½Ã°£½½·ÔÀ» ÇÊ¿ä·Î ÇÏ°Ô µÇ´Â µ¥,
ÀÌ·¸°Ô ¼±¹ÚÀÇ ¼Óµµ³ª ħ·Î º¯°æ¿¡ µû¶ó ÀϽÃÀûÀ¸·Î ÇÊ¿äÇÏ°Ô µÈ
Áõ°¡ºÐÀÇ ½Ã°£½½·ÔÀ» ÇÒ´çÇÏ¿© ¹èÁ¤ÇÏ´Â ÁÖÆļö Á¢¼Ó¹æ½ÄÀÌ
¹Ù·Î Áõ° ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(ITDMA)¹æ½ÄÀÌ´Ù.
¼±¹Ú½Äº°ÀåÄ¡(AIS)´Â 27°¡Áö À¯ÇüÀÇ ¸Þ½ÃÁö¸¦ »ç¿ëÇÏ¿©
¼±¹ÚÀÇ À§Ä¡Á¤º¸, Ç×ÇØÁ¤º¸, ¾ÈÀü°ü·Ã Á¤º¸, ÇØ»óÁ¤º¸ µîÀ» ÁÖ°í ¹Þ´Â´Ù.
¼±¹Ú¿¡ ¼³Ä¡µÈ ¼±¹Ú½Äº´ÀåÄ¡ÀÇ ¼Û ¼ö½Å±â ³¢¸®
27°³ À¯ÇüÀÇ AIS ¸Þ½ÃÁö¸¦ »óÈ£±³È¯Çϱâ À§Çؼ´Â µ¥ÀÌÅÍ Àü¼Û ¸Åü°¡ ÇÊ¿äÇѵ¥.
¼±¹Ú½Äº°ÀåÄ¡(AIS)´Â ÃÊ´ÜÆÄ(VHF) ä³Î 2°³¸¦ »ç¿ëÇÑ´Ù.
¼±¹Ú½Äº°ÀåÄ¡(AIS)°¡ ÃÊ´ÜÆÄ ¹«¼±Åë½ÅÀÇ µ¥ÀÌÅÍ ¸µÅ©¿¡ Á¢¼ÓÇÏ¿©
¼±¹ÚÁ¤º¸¸¦ Àü¼ÛÇÏ´Â ¹æ½ÄÀº
½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA, Time Dividision Multiple Access)ÀÌ´Ù.
µ¿ÀÏÇÑ ÃÊ´ÜÆÄ ÁÖÆļö ä³ÎÀ» »ç¿ëÇÏ´Â ÀÎÁ¢ÇÑ ¼±¹ÚÀÇ ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ ³¢¸®
Àü¼ÛÇÏ´Â ¸Þ½ÃÁöÀÇ Ãæµ¹À» ÇÇÇϱâ À§ÇÏ¿©
ÃÊ´ÜÆÄ ÁÖÆļö ä³ÎÀ» 60ÃÊ´ç 2250°³ÀÇ ½Ã°£½½·ÔÀ¸·Î ³ª´©°í
ÀÚüÀûÀ¸·Î °¢ÀÚÀÇ Á¢¼Ó½½·ÔÀ» ÇÒ´çÇÏ´Â ÁÖÆļö »ç¿ë¹æ½ÄÀÌ
½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA, Time Dividision Multiple Access)¹æ½ÄÀÌ´Ù.
°¢ ¼±¹Ú¿¡ ¼³Ä¡µÈ ¼±¹Ú½Äº°ÀåÄ¡(AIS)´Â
¹Ù·Î ÀÌ ½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA, Time Dividision Multiple Access) ¹æ½ÄÀ¸·Î
ÃÊ´ÜÆÄ ÁÖÆļö ä³Î¿¡ Á¢¼ÓÇÏ¿©
27°¡Áö À¯ÇüÀÇ ¸Þ½ÃÁö¸¦ ¼·Î ÁÖ°í ¹Þ´Â´Ù.
±×·±µ¥ ÀÌ ½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA, Time Dividision Multiple Access) ¹æ½ÄÀº
Àü¼ÛÇÏ´Â 27°¡Áö ¸Þ½ÃÁöÀÇ À¯Çü¿¡ µû¶ó¼
ÃÊ´ÜÆÄ Ã¤³Î¿¡ Á¢¼ÓÇÏ¿© µ¥ÀÌÅ͸¦ ±³È¯ÇÏ´Â ¹æ½ÄÀÌ 6°¡Áö·Î ¼¼ºÐȵȴÙ.
±×·¸°Ô ¼¼ºÐÈµÈ 6°¡ÁöÀÇ ½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA, Time Dividision Multiple Access) ¹æ½ÄÀº
´ÙÀ½°ú °°´Ù.
1. ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA, Self Organised Time Division Multiple Access )
2. ¹«ÀÛÀ§Á¢¼Ó ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(RATDMA, Random Access Time Division Multiple Access)
3. Áõ° ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(ITDMA, Incremental )
4. °íÁ¤Á¢¼Ó ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(FATDMA)
5. ¹Ý¼ÛÆÄ°¨Áö ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(CSTDMA)
6. ¼öÁ¤ ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(Modified SOTDMA)
---------------
Class AÀÇ ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡(AIS)°¡ »ç¿ëÇÏ´Â À§Ä¡Á¤º¸¸Þ½ÃÁö´Â
´ÙÀ½°ú °°Àº ¼¼°¡Áö À¯ÇüÀÇ ¸Þ½ÃÁöÀÌ´Ù.
¼¼ °¡Áö À¯ÇüÀÇ À§Ä¡Á¤º¸¸Þ½ÃÁö Áß¿¡¼ AIS Message Type 1Àº
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)¹æ½ÄÀ» »ç¿ëÇÏ¿© À§Ä¡Á¤º¸¸¦ Àü¼ÛÇÏ´Â ¸Þ½ÃÁöÀÌ´Ù.
À§¿¡¼ ¼³¸íÇÑ ½Ã°£ºÐÇÒ´ÙÁßÁ¢¼Ó(TDMA) ¹æ½ÄÀ» ÀÌÇØÇÏ¿´´Ù¸é
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)Àº ½±°Ô ÀÌÇصȴÙ.
ÀÚ°¡Á¶Á¤, ¶Ç´Â ÀÚüÁ¶Á¤(Self-oranized)ÀÌ °Á¶µÉ »ÓÀÌ´Ù.
µ¿ÀÏÇÑ ÁÖÆļö¸¦ »ç¿ëÇÏ´Â ÀÎÁ¢ÇÑ ¼±¹Úµé³¢¸®
ÀÚüÀûÀ¸·Î ÇϳªÀÇ ÁÖÆļö¸¦ 2250°³ÀÇ ½Ã°£½½·ÔÀ¸·Î ³ª´©¾î
°¢ ÀÚÀÇ Á¤º¸°»½ÅÁֱ⿡ µû¶ó ¼·Î¿¡°Ô ÇÊ¿äÇÑ ½Ã°£½½·Ô °£°ÝÀ» ºÐÇÒÇÏ¿© ¹èÁ¤ÇÏ´Â ¹æ½ÄÀÌ
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)ÀÌ´Ù.
Principle of SOTDMA protocol.
[Ãâó] Detection Probability Analysis of Space-Based AIS Signal by Using Geometrical Model
Yuli Chen Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China
Journal of Shipping and Ocean Engineering 4 (2014) 161-171
http://www.davidpublishing.com/davidpublishing/Upfile/9/11/2014/2014091184338585.pdf
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)¹æ½Ä¿¡ µû¶ó °¢ ¼±¹ÚÀÇ ÀÚµ¿½Äº°ÀåÄ¡(AIS)¿¡ ÇÒ´çµÈ
½Ã°£½½·ÔÀÇ °£°ÝÀº
¼±¹ÚÀÇ Á¤º¸°»½ÅÁÖ±â¿Í ÀÏÄ¡ÇÑ´Ù.
ÇÑ ¼±¹ÚÀÌ ÃÊ´ÜÆÄ ÁÖÆļö ä³Î 2°³¸¦ ¸ðµÎ »ç¿ëÇÒ °æ¿ì
±× ¼±¹ÚÀÇ ¼Óµµ¿Í ħ·ÎÀÇ º¯È¿¡ µû¸¥
¼±¹ÚÀÇ Á¤º¸°»½ÅÁÖ±â´Â ´ÙÀ½°ú °°´Ù.
¼Óµµº¯ÈÀÇ ±âÁ¡Àº 3³ëÆ®, 14³ëÆ®, 23³ëÆ®°¡ µÇ¸ç
ħ·ÎÀÇ º¯È´Â ¡¾ 5µµÀÏ °æ¿ìÀÌ´Ù.
¸¸¾à 14³ëÆ® ¹Ì¸¸ÀÇ ¼Ó·ÂÀ¸·Î Ç×ÇØÇÏ´ø ¼±¹ÚÀÌ 14³ëÆ® ÀÌ»ó 23³ëÆ® ÀÌÇÏ·Î ¼Ó·ÂÀ» ³ôÀ̰ųª
15³ëÆ®¿¡¼ 23³ëÆ® »çÀÌ¿¡¼ ¿îÇ×ÇÏ´Ù°¡ ¡¾ 5µµ·Î º¯Ä§À» ÇÏ°Ô µÇ¸é ¾î¶»°Ô µÉ±î?
¼±¹ÚÀÌ Åë»ó Àü¼ÛÇÏ´Â ¸Þ½ÃÁö À¯ÇüÀÌ 1¹ø¿¡¼ 3¹øÀ¸·Î º¯ÇÏ°Ô µÉ °ÍÀÌ´Ù.
¿Ö³ÄÇϸé 15³ëÆ®¿¡¼ 23³ëÆ® »çÀÌ¿¡¼ ¿îÇ×ÇÒ ¶§¿¡´Â Á¤º¸°»½ÅÁֱⰡ 6ÃÊ¿´´Â µ¥,
º¯Ä§Á¡¿¡¼ º¯Ä§À» ½ÃµµÇÏ°Ô µÊ¿¡ µû¶ó Á¤º¸°»½ÅÁֱⰡ 2ÃÊ·Î »¡¶óÁ®¼
ÀÚ°¡±¸¼º ½Ã°£ÇÒ´ç´ÙÁßÁ¢¼Ó(SOTDMA)¹æ½Ä¿¡ µû¶ó
ÀÌ¹Ì ÇÒ´ç ¹Þ¾Ò´ø ±âÁ¸ÀÇ ½Ã°£½½·Ô °£°ÝÀ¸·Î´Â
Á¤º¸¸¦ Àü¼ÛÇÒ ¼ö°¡ ¾ø°Ô µÇ¾ú±â ¶§¹®ÀÌ´Ù.
Á¤º¸°»½ÅÁֱⰡ »¡¶óÁü¿¡ µû¶ó º°µµ·Î Áõ°¡ºÐÀÇ ½Ã°£½½·ÔÀÌ ÇÒ´çµÇÁö ¾Ê´Â´Ù¸é
´Ù¸¥ ¼±¹ÚÀÇ ¼±¹Ú½Äº°ÀåÄ¡°¡ »ç¿ëÇÏ´Â ½Ã°£½½·Ôµé°ú Ãæµ¹À» ÀÏÀ¸Å°°Ô µÉ °ÍÀÌ´Ù.
±×·¯¹Ç·Î ±Þº¯Ä§ÀÌ ¹ß»ýÇßÀ» °æ¿ì
¡®¼±¹Ú¿¡¼ ¹ß½ÅÇÏ´Â À§Ä¡Á¤º¸¸¦
Á¤ÇØÁø ½Ã°£ °£°ÝÀ¸·Î ¼ö½ÅÇÏÁö ¸øÇÏ´Â ½½·ÔÃæµ¹ Çö»ó¡¯ÀÌ ³ªÅ¸³¯ ¼ö ÀÖ´Ù.
The message collision scenario for a spaceborne AIS system (image credit: NICT)
https://directory.eoportal.org/web/eoportal/satellite-missions/s/sds-4
±×·² °æ¿ì¿¡ µ¥ÀÌÅÍ Àü¼Û¹æ½ÄÀÌ
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)¿¡¼ Áõ° ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(ITDMA)À¸·Î ÀüȯµÇ¾î
ÇÊ¿äÇÑ Áõ°¡ºÐÀÇ ½Ã°£½½·ÔÀ» ÇØ´ç ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡¿¡ ÇÒ´çÇÒ ¼ö ÀÖ°Ô µÇ´Â °ÍÀÌ´Ù.
ÀÚ°¡±¸¼º ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó (SOTDMA)¿¡¼
Áõ° ½ÃºÐÇÒ ´ÙÁßÁ¢¼Ó(ITDMA, Incremental )À¸·Î ÀüȯµÊ¿¡ µû¶ó
¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ ¸Þ½ÃÁö À¯Çüµµ 1¹ø¿¡¼ 3¹ø(AIS Message Type 3)À¸·Î º¯ÇÏ°Ô µÈ´Ù.
µ¥ÀÌÅÍ Àü¼Û¹æ½ÄÀÇ º¯È´Â ¸Þ½ÃÁö 1¹ø°ú 3¹øÀ» µðÄÚµùÇÑ
Ç×ÀûÁ¤º¸ÀÇ Communication StateÀÇ Â÷ÀÌ¿¡¼ ¹ß°ß ¼ö ÀÖ´Ù.
Á¦ÁÖ VTS ¼±ÍÆ÷ ±âÁö±¹ ¼ö½Å½Ã°£ 8½Ã 00ºÐ 44ÃÊÀÇ AIS Message Type 3(Time stamp 45)
$IEC03,VTS1012,0000000,P,0,20140416080044|!AIVDM,1,1,,A,36SWOT003B`wmhtCbbaV;4qJ2001,0*68^7E
Á¦ÁÖ VTS ¼±ÍÆ÷ ±âÁö±¹ ¼ö½Å½Ã°£ 8½Ã 00ºÐ 44ÃÊÀÇ AIS Message Type 1(Time stamp 45)
$IEC01,VTS1012,0000000,P,0,20140416080044|!AIVDM,1,1,,A,16SWOT003B`wmhtCbbaV;4qJ2000,0*6B^05
±×·¯³ª °ú¿¬ À̰͸¸À¸·Î
¼¼¿ùÈ£ ¿ø¹®Ç×Àû¿¡ µîÀåÇÏ´Â AIS ¸Þ½ÃÁö À¯Çü 3¹øÀ» ´Ù ¼³¸íÇÒ ¼ö ÀÖÀ»±î?
-------------------------
µÑ.
AIS Message Type 3(response to Interrogation)Àº ƯÁ¤ ¸Þ½ÃÁö Àü¼ÛÀ» ¿äûÇÏ´Â ¸Þ½ÃÁö,
Áï AIS Message Type 15(Interrogation, request for a specific message type)¿¡ ´ëÇÑ
ÀÚµ¿ ÀÀ´ä ¸Þ½ÃÁö(autonomous response message )ÀÌ´Ù.
-ÀÚµ¿¸ðµå¿¡¼ Á¤º¸ °»½Å°£°Ý ¹× Á¦°øÁ¤º¸´Â ´ÙÀ½°ú °°À» °Í
(1) Á¤ÀûÁ¤º¸(±¹Á¦ÇØ»ç±â±¸ ¹øÈ£, È£ÃâºÎÈ£¿Í ¼±¸í, ¼±¹ÚÀÇ ±æÀÌ¿Í Æø, ¼±¹ÚÀÇ Á¾·ù,
¼±¹ÚÃøÀ§½Ã½ºÅÛÀÇ ¼³Ä¡À§Ä¡(¼±¹ÚÁ߽ɼ± »óÀÇ ¼±¼ö ¶Ç´Â ¼±¹Ì, ÁÂÇö ¶Ç´Â ¿ìÇö)ÀÇ °»½ÅÀº
¸Å 6ºÐ¸¶´Ù ¶Ç´Â µ¥ÀÌÅÍ°¡ ¼öÁ¤µÇ°Å³ª ¿ä±¸°¡ ÀÖÀ» ¶§¿¡ ÀÌ·ç¾îÁú °Í
(2) µ¿ÀûÁ¤º¸(Á¤È®ÇÑ ¼±¹ÚÀ§Ä¡ Ç¥½Ã ¹× µ¿ÀÛ »óÅÂ, ÇùÁ¤¼¼°è½Ã(UTC),
´ëÁöħ·Î, ´ëÁö¼Ó·Â, ¼±¼ö¹æÇâ, Ç×ÇØ»óÅÂ, ¼±È¸À²(rate of turn)À» ¸»ÇÑ´Ù)´Â
¼±¹Ú¼Ó·Â ¹× ħ·Îº¯°æ À¯¹«¿¡ µû¶ó ´ÙÀ½Ç¥ÀÇ °£°ÝÀ¸·Î °»½ÅµÉ °Í
(°¡) ¼±¹Ú±¹¿ë Á¾º°A ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì(Class A AIS)
(³ª) ¼±¹Ú±¹¿ë Á¾º°B ÀÚµ¿¹æ½Ä ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì
Class B/SO(SOTDMA) (ÀÚ°¡±¸¼º ½Ã°£ºÐÇÒ ´ÙÁß Á¢¼Ó ¹æ½Ä)
(´Ù) ¼±¹Ú±¹¿ë Á¾º°B ¹Ý¼ÛÆÄ°¨Áö¹æ½Ä ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì
Class B/CS(Carrier-Sense TDMA) (¹Ý¼ÛÆÄ°¨Áö ½Ã°£ºÐÇÒ ´ÙÁß Á¢¼Ó¹æ½Ä)
(¶ó) Çؾȱ¹¿ë ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì µ¿ÀûÁ¤º¸ °»½Å°£°ÝÀº 10ÃÊÀÏ °Í
(¸¶) Á¶³±¸Á¶¿ë Ç×°ø±â¿¡ žÀçÇÑ ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ °æ¿ì µ¿ÀûÁ¤º¸ °»½Å°£°ÝÀº 10ÃÊÀÏ °Í
(3) Ç×ÇØ °ü·Ã Á¤º¸(¼±¹ÚÀÇ Èê¼ö, À§Çèȹ°(ȹ°Á¾·ù), µµÂøÁö ¹× ¿¹»óµµÂø½Ã°£)ÀÇ °»½ÅÀº ¸Å 6ºÐ¸¶´Ù ¶Ç´Â µ¥ÀÌÅÍ°¡ ¼öÁ¤µÇ°Å³ª ¿ä±¸°¡ ÀÖÀ» ¶§¿¡ ÀÌ·ç¾îÁú °Í
(4) Ç×Çذ溸 ¶Ç´Â ±â»ó°æº¸¸¦ Æ÷ÇÔÇÏ´Â Ç×ÇؾÈÀü °ü·Ã ¸Þ½ÃÁöÀÇ °»½ÅÀº Çؾȱ¹ µîÀÇ ¿ä±¸°¡ ÀÖÀ» ¶§¿¡ ÀÌ·ç¾î Áú °Í
[Ãâó] ÇØ»ó¾÷¹«¿ë ¹«¼±¼³ºñÀÇ ±â¼ú±âÁØ
http://etri.naralaw.co.kr:9013/lims/front/law.html?pAct=view&pPromulgationNo=4838
(°¡) AIS ¸Þ½ÃÁöº° µ¿ÀûÁ¤º¸ °»½ÅÁÖ±âÇ¥
(³ª) ¼±¹Ú±¹¿ë Á¾º°A(Class A)¿Í Á¾º°B(Class B)ÀÇ µ¿ÀûÁ¤º¸ °»½ÅÁÖ±âÇ¥
(1) ¼±¹Ú±¹¿ë Á¾º°A ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì(Class A AIS)
(2) ¼±¹Ú±¹¿ë Á¾º°B ÀÚµ¿¹æ½Ä ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì
Class B/SO(SOTDMA) (ÀÚ°¡±¸¼º ½Ã°£ºÐÇÒ ´ÙÁß Á¢¼Ó ¹æ½Ä)
¼±¹Ú±¹¿ë Á¾º°B ¹Ý¼ÛÆÄ°¨Áö¹æ½Ä ¼±¹ÚÀÚµ¿½Äº°ÀåÄ¡ÀÇ °æ¿ì
Class B/CS(Carrier-Sense TDMA) (¹Ý¼ÛÆÄ°¨Áö ½Ã°£ºÐÇÒ ´ÙÁß Á¢¼Ó¹æ½Ä)
[Ãâó] IALA Guideline No. 1082 On an Overview of AIS Edition 1 June 2011
http://www.navcen.uscg.gov/pdf/IALA_Guideline_1082_An_Overview_of_AIS.pdf
[Ãâó] AIS Overview
SHINE MICRO
http://www.shinemicro.com/aisoverview.asp
Class B AIS¸¦ »ç¿ëÇÏ¿© Àü¼ÛÇÏ´Â À§Ä¡Á¤º¸¸Þ½ÃÁö AIS Message Type 3ÀÇ °æ¿ì,
À§Ä¡Á¤º¸¸Þ½ÃÁö¶ó´Â Á¡¿¡¼ µ¿ÀÏÇÑ AIS Message Type 1°ú AIS Message Type 2¿Í´Â ´Þ¸®
µ¿ÀûÁ¤º¸ °»½ÅÁֱⰡ Àû¿ëµÇÁö ¾Ê´Â´Ù.
N/A (Not Applicable, Not Available)
(Àû¿ëºÒ°¡(îêéÄÝÕʦ), Àû¿ë ¾ÈµÊ, ÇØ´ç»çÇ× ¾øÀ½)
±× ÀÌÀ¯´Â?
Class B AIS¸¦ »ç¿ëÇÏ¿© Àü¼ÛÇÏ´Â À§Ä¡Á¤º¸¸Þ½ÃÁö AIS Message Type 19ÀÇ °æ¿ì ¿ª½Ã,
À§Ä¡Á¤º¸¸Þ½ÃÁö¶ó´Â Á¡¿¡¼ µ¿ÀÏÇÑ AIS Message 18°ú´Â ´Þ¸®
µ¿Àû Á¤º¸ °»½ÅÁֱⰡ Àû¿ëµÇÁö ¾Ê´Â´Ù.
ÀÌÀ¯´Â?
Class A AISÀÇ ¸Þ½ÃÁö À¯Çü 3¹ø°ú Class B AISÀÇ ¸Þ½ÃÁöÀ¯Çü 19¹øÀÇ °æ¿ì,
µ¿Àû Á¤º¸ °»½ÅÁֱⰡ Àû¿ëµÇÁö ¾Ê´Â ÀÌÀ¯´Â
±× ¸Þ½ÃÁöµéÀÌ µÑ ´Ù 'ƯÁ¤ ¸Þ½ÃÁö ŸÀÔÀÇ Àü¼ÛÀ» ¿ä±¸ÇÏ´Â ¸Þ½ÃÁö'(AIS Message Type 15,
Interrogation, request for a specific message type)¿¡ ´ëÇÑ
ÀÚµ¿ÀÀ´ä ¸Þ½ÃÁö(autonomous response message)À̱⠶§¹®ÀÏ °ÍÀÌ´Ù.
[Ãâó] AIS ±â¼úÇ¥ÁØÈ ´ëÀÀÇöȲ
GMT (ÁÖ)Áö¿¥Æ¼»çÀ̹ö³×ƽ½º
http://e-navi.or.kr/data/board_data/540501001278675510.pdf
[Ãâó] RECOMMENDATION ITU-R M.1371-1*
Technical characteristics for a universal shipborne automatic identification system using time division multiple access in the VHF maritime mobile band (Question ITU-R 232/8) (1998-2001)
https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1371-1-200108-S!!PDF-E.pdf
¾î°¼ ±×·±°¡?
±×¸®°í 'ƯÁ¤ ¸Þ½ÃÁö ŸÀÔÀÇ Àü¼ÛÀ» ¿ä±¸ÇÏ´Â ¸Þ½ÃÁö'(AIS Message Type 15)¿¡ ´ëÇÑ
ÀÚµ¿ÀÀ´ä À§Ä¡Á¤º¸ ¸Þ½ÃÁöÀÏ °æ¿ì µ¿ÀûÁ¤º¸ °»½ÅÁֱⰡ Àû¿ëµÇÁö ¾Ê´Â ´Ù°í ÇÏ´Â °ÍÀº
°á±¹ ¹«¾ùÀ» ÀǹÌÇϴ°¡?
½ÇÁ¦·Î ¼¼¿ùÈ£ ¿ø¹®Ç×ÀûÀ» µðÄÚµùÇؼ ¼Û½Å½Ã°£(Time stamp)¸¦ È®ÀÎÇØ º¸¸é
µ¿Àû Á¤º¸ °»½ÅÁÖ±â·Î½á´Â ¼³¸íÇÒ ¼ö ¾ø´Â
AIS Message Type 3¹øÀÇ ±º(ÏØ)À» ÀÚÁÖ ¸¶ÁÖÄ¡°Ô µÈ´Ù.
ÀÌ¿¡ ´ëÇؼ´Â ¼¼¿ùÈ£ »ç°í ½Ã°£´ë¿¡
ÇØ°æÀÇ Áö´ÉÇü ÇØ»ó±³Åë°ü¸®½Ã½ºÅÛÀÌ ½ÇÁ¦·Î °¡µ¿µÇ°í ÀÖ¾ú´ø ¸î °¡Áö »ç·Ê¸¦ ¼³¸íÇÒ ¶§
ÀÚ¼¼ÇÏ°Ô ¾ð±ÞÇÒ ¿¹Á¤ÀÌ´Ù.
----------------
AIS Message Type 3 is a special or
interrogation position report that is commanded using AIS message Type 15.
[Ãâó] Utility of Various AIS Messages for Maritime Awareness
James K.E. Tunaley
http://www.london-research-and-development.com/Utility-of-Various-AIS-Messages-for-Maritime-Awareness.pdf
(1) Special Position Report
"Message 3 transmission is ITDMA based and is used
when a ship is announcing a need for extra slots due to increased reporting rate,
usually related to a change in speed or cruising direction."
[Ãâó] AIS message extraction from overlapped AIS signals for SAT-AIS applications
Andis Dembovskis
http://elib.suub.uni-bremen.de/edocs/00104599-1.pdf
ÁÖ±âÀû º¸°í °£°ÝÀÇ ÀÓ½ÃÀû º¯°æ°ú Àüȯ
temporary changes and transitions in periodical report rates
(2) response to interrogation, or polling
AIS Message Type 3 is an interrogation position report that is commanded
using AIS message Type 15(Interrogation, request for a specific message type).
----------------
T/I Transmits by own station, and responds if interrogated by msg 15
[Ãâó] IALA Guideline No. 1059 On The Comparison of AIS Stations Edition 1 June 2008
http://www.e-navigation.nl/sites/default/files/1059%20Comparison%20of%20Different%20Types%20of%20AIS%20Stations.pdf
IALA Guideline 1082 An overview of AIS June 2016
http://www.navcen.uscg.gov/pdf/IALA_Guideline_1082_An_Overview_of_AIS.pdf