Application of GPS in Field Artillery Bradley Cimpher
Overview Brief History of Artillery GPS Guided Munitions MGRS and DAGR AFCS Process of Firing
History Introduction of Siege in 13th Century 14th Century- Bombard and Mortar 15th Century- Bronze and Transportation
Flash forward to today. M777, M109 (155mm) and M119 (105mm) Mobile, Accurate, Effective
GPS Guided Munitions M982 Excalibur Round $80,000 4 Satellites Required Not dependent on weather GPS Receiver- Galileo, Glonass, etc. Auto correction in flight Vulnerable to jamming First operational use in Iraq of 2007
DAGR and MGRS Defense Advanced GPS Receiver Can decrypt Y-code Handheld Positioning of firing units Military Grid Reference System Used by NATO forces Derived from UTM and UPS grid system Used for the entire earth
AFCS- Automatic Fire Control System Displays position location (easting, northing, and altitude) and directional data (azimuth and elevation). Accepts fire missions Orients tube to deflection and quadrant.
Process of Firing Receive Fire Mission Find Suitable Location Verify Location and Site Data Min/Max Quadrant (elevation), Left/Right Deflection (mils) Firing Data Verified in Gun Round is set with Fire Data (GPS Coordinates) Execute Fire Mission
Summary Why use GPS? Proficient Accuracy Prevents collateral damage Low cost Increased survivability Rejuvenated Field Artillery
Sources http://www.history.army.mil/html/books/oh_of_fa/cmh_60-16-1.pdf http://www.history.army.mil/html/books/070/70-27/cmhPub_70-27.pdf http://fas.org/man/dod-101/sys/land/docs/fm-6-70/CHAPTER7.html https://file.wikileaks.org/file/us-military-gps-manual.pdf http://forums.unitedoperations.net/index.php/topic/8766-operations-of-the-field-artillery-battery/ http://earth-info.nga.mil/GandG/coordsys/mmr201.pdf http://armawiki.zumorc.de/index.php/US_Artillery_Call_For_Fire http://www.army-technology.com/projects/paladin/ http://www.primeportal.net/m109_iraq.htm http://www.army-technology.com/news/newsrockwell-collins-continue-support-us-dods-low-cost-gps-programme http://www.DT-Guided-Artillery-Oct-2010.pdf
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