GPS Anti-Jam Technology
¤· ½Ã½ºÅÛ ±¸¼º
- Ground segment: CS(constrol
station), MS(monitor station)
- Space segment: a
constellation of satellites
- Mobile users
- Augmentation systems
¤· ¸ñÀû¿¡ µû¸¥ ºÐ·ù
- ¹Î°£¿ë(civilian)
- ±º»ç¿ë(military)
¤· À§¼º¿¡ µû¸¥ Á¾·ù
- GPS: ¹Ì±¹
- Galileo: À¯·´¿¬ÇÕ
- GLONASS: ·¯½Ã¾Æ
¤· ¿ë¾î
GNSS(Global Navigation
Satellite Systems): Àü¼¼°è Ç×¹ýÀ§¼º ½Ã½ºÅÛ
GPS(Global Positioning
System): ¹Ì±º¿¡¼ ¿î¿µ
GLONASS(Global Navigation
Satellite System): ·¯½Ã¾Æ±º¿¡¼ ¿î¿µ
Beidou: Áß±¹ÀÇ Áö¿ª¿ë À§¼ºÃøÀ§½Ã½ºÅÛ
Galileo: À¯·´¿¬ÇÕÀÇ À§¼ºÃøÀ§½Ã½ºÅÛ. ¹Î°£ À§¼ºÃøÀ§½Ã½ºÅÛ »ç¿ëÀÚÀÇ ´Ù¾çÇÑ ÇÊ¿ä»çÇ× ¼ö¿ë. GPS¿Í GLONASS¿¡ÀÇ ÀÇÁ¸¼º °¨¼Ò
QZSS(Quasi-Zenith
Satellite System): ÇöÀç ½Ã½ºÅÛÀÇ integrity Çâ»ó, µµ½ÉÁö¿ª ºôµù½£¿¡¼ °¡½Ã À§¼º¼ö Áõ´ë
¤· µ¿Çâ
- ¿©·¯ ±¹°¡¿¡¼ Á¦°øÇÏ´Â ´Ù¾çÇÑ À§¼ºÃøÀ§ ½ÅÈ£ÀÇ ÃâÇö: ÃøÀ§Á¤È®µµ Çâ»ó, À§¼º °¡½ÃÁö¿ª(ÁöÁ¡) Áõ´ë, ¼ö½Å½ÅÈ£ °¨µµ Áõ´ë
[Augmentation System(AS)]
¤· ¸ñÀû: integrity, accuracy, usefulness
¤· ¼ºñ½º ¹üÀ§: Àü¼¼°è(global), Áö¿ª(loocal)
¤· Satellite-based AS(SBAS)
ESA(2009): EGNOS,
European Geostationary Navigation Overlay Service
¤· Ground-based AS(GBAS):
*Nnetwork real-time
kinematic(RTK): VRS¿¡¼ ÀÏÁ¤°Å¸®(15-30km) À̳»¿¡¼ 1m ÀÌÇÏÀÇ ÃøÀ§Á¤È®µµ Á¦°ø. ´Ù¼öÀÇ VRS·Î ±¸¼ºµÈ ¸Á »ç¿ë.
*Virtual reference
station(VRS)
*D-GPS
GeoBasis(2011):
SAPOS, German augmentation system
¤· Galileo
- À¯·´¿¬ÇÕÀÇ ¹Î°£ÀÌ ¿î¿µÇÏ´Â GNSS
- GPS¿Í GLONASS¿¡ÀÇ ÀÇÁ¸¼º¿¡¼ Å»ÇÇ
- ½ÅÈ£ ½ºÆåÆ®·³
- GPS ½ÅÈ£º¸´Ù versatility Áõ´ë
¤· QZSS
- µµ½É ºôµù½£¿¡¼ÀÇ À§¼ºÃøÀ§°¡ °ï¶õÇÑ ¹®Á¦ ÇØ°áÇϱâ À§ÇØ Á¦¾È
- 3°³ ÀÌ»óÀÇ ÃøÀ§À§¼ºÀÌ inclined geo-synchronous circular orbit¿¡¼ µ¿ÀÛ. ÁÖ±â 24½Ã°£. ±Ëµµ°íµµ 35,768km
- Geo-stationary vs
geo-synchronous
- GPS, GLONASS ½ÅÈ£¿Í ȣȯ
- ¹æ¼Û°ú Åë½Å±â´É Ãß°¡: À§¼º°ú Áö»ó »ç¿ëÀÚ °£ÀÇ ¹æ¼Û/Åë½Å ä³Î Ãß°¡
- QZSS ¼ºñ½º
* GPS L1, L2, L5 ½ÅÈ£ Àü¼Û
*ÃøÀ§¿ÀÂ÷ º¸Á¤µ¥ÀÌÅÍ(correction data) ¹æ¼Û
Gomi(2004): Quasi-zenith satellite
system (QZSS) program overview