The effects of any budget/program decisions made since the information was collected during 1997-98 are NOT reflected in the National Security Space Road Map (NSSRM).

---

(U) This category describes the navigational space systems the DoD is operating. These systems comprise the NAVSTAR GPS program, which is a satellite-based radio positioning/navigation system providing extremely accurate, three dimensional, common grid position, velocity and time of day information to users anywhere on or near the earth. This category also describes programs designed to protect these navigation assets and capabilities as well as preventing the unauthorized use of these navigation assets by an adversary. One initiative described in this category is the Navigation Warfare (NAVWAR) Advanced Concept Technology Demonstration (ACTD).

• Related Initiatives
• Related Categories
• Road Map Placements
• Additional Hotlinks

Related Initiatives (U):

This Table Is Unclassified.

Name	Title
GPS Block IIA	NAVSTAR Global Positioning System(GPS) Block IIA
GPS Block IIF	NAVSTAR Global Positioning System(GPS) Block IIF
GPS Block IIR	NAVSTAR Global Positioning System(GPS) Block IIR

Related Categories (U): None.

Road Map Placements (U):

This Table Is Unclassified.

Name	Title
NAVIGATION	SPACE FORCE ENHANCEMENT: NAVIGATION

Requirements, Funding and Additional Hotlinks (U):

(U) None.

Date Of Information (U):

(U) 21 November 1997

(U) Road Map Production Date: 18 June 2001