1、 CHAIRMAN OF THE JOINT CHIEFS OF STAFF INSTRUCTION J-3 CJCSI 3900.01D DISTRIBUTION:A,B,C 14 May 2015 POSITION(POINT AND AREA)REFERENCE PROCEDURES References:a.DoDD 5105.60,29 July 2009,“National Geospatial-Intelligence Agency(NGA)”b.NGA STND.0036,Department of Defense World Geodetic System 1984 c.NG
2、A Standardization Document,Implementation Practice Web Mercator Map Projection,2013-12-9 1.Purpose.This instruction establishes policy in the use of verbal,written,storage of,and/or display of position reference procedures for unilateral and joint operations of the U.S.Armed Forces and for multinati
3、onal operations with the military forces of allied nations.2.Superseded/Cancellation.CJCSI 3900.01C,30 June 2007,“POSITION(POINT AND AREA)REFERENCE,”is hereby superseded.3.Applicability.This instruction applies to the Combatant Commands,Services,Defense agencies,and Joint Staff.4.Policy a.World Geod
4、etic System 1984(WGS 84),which incorporates an ellipsoidal Earth model,is the official DoD positional coordinate reference system.In unilateral and joint operations,the U.S.military will use the WGS 84 geodetic 3-D coordinate reference system-(including Height Above Ellipsoid)unless the Commander de
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