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).

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(U) Precision Lightweight GPS Receiver (PLGR)

Description (U):

(U) The AN/PSN-11 PLGR is a small, handheld, Global Positioning System (GPS) receiver featuring selective availability/antispoofing (SA/A-S) and anti-jam capability. It provides precise positioning and timing solutions based upon signals received from the GPS satellite constellation. It is a five channel receiver, capable of Precision Code (P Code) and Y Code (encrypted P Code) reception. Positioning solutions can be displayed in latitude, longitude, military grid reference system, Universal Transverse Mercator, British National Grid, and Irish Transverse Mercator Grid coordinates. It contains 49 map datums, and can be programmed to support navigation. The PLGR has a built-in-test feature, and is NVG compatible. In addition to extensive handheld and ground-mobile use, the PLGR is being used for medium dynamics aircraft applications.

(U) The Enhanced Precision Lightweight GPS Receiver (EPLGR) is an enhanced version of the PLGR featuring increased battery life and number of waypoints. EPLGR procurement began in October 1995.

User Impact (U):

(U) The PLGR is the first GPS receiver used widely throughout the DoD providing individual soldiers and small platforms all-weather, precise navigation and timing capabilities, globally. The PLGR provides real time precise positioning and timing capabilities to enhance platform/ground soldiers' navigation, site surveying, field artillery placement, target acquisition, target hand-off operations, and communication systems timing. Improves lethality based on precise knowledge of the location of friendly firepower, coupled with precision forward-observer determinations of enemy locations and movements. In non-combat operations, will support efficient off-road navigation for supply distribution, vehicle recovery, rendezvous, and reconnaissance. DoD is in current negotiations to extend the PLGR warranty by 4 years on all receivers due to their extensive utility.

Programmatics (U):

(U) Operational.

• (U) Termination: 01/2001 (2QFY2001).
  
  (U) 01/2001 is when the Defense Advanced GPS Receiver (DAGR) will begin to replace the PLGR. Many PLGRs are expected to be in service well past 2001. PE35164F.

Images (U):

This Table Is Unclassified.

Name	Title
PLGR	Precision Lightweight GPS Receiver (PLGR)
PLGR - Color	Precision Lightweight GPS Receiver (PLGR)

Related Initiatives (U):

This Table Is Unclassified.

Name	Title
Defense Advanced GPS Receiver	Defense Advanced GPS Receiver (DAGR)
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
NAVWAR Adv Concept Tech Demo	Navigational Warfare (NAVWAR) Advanced Concept Technology Demonstration (ACTD)

Related Requirements (U): None.

Related Categories (U):

This Table Is Unclassified.

Name	Title
Hand-Held	Hand-held Receivers

Road Map Placements (U):

This Table Is Unclassified.

Name	Title
NAVIGATION	SPACE FORCE ENHANCEMENT: NAVIGATION

Requirements, Funding and Additional Hotlinks (U):

This Table Is Unclassified.

Name
GPS User Equipment - Port/Hand

Lead Office (U):

Air Force.

(U) DoD: USD(A&T) and OASD(C3I), Pentagon, Washington, DC
(U) Service Staff: SAF/AQS, Pentagon, Washington, DC
(U) Major Command: HQ AFSPC/DR, Peterson AFB, CO; HQ ACC/DR, Langley AFB, VA
(U) Program Management: SMC/CZ, Los Angeles AFB, CA

Point of Contact (U):

(U) Diana Wright, SMC, Open Phone: None..

Date Of Information (U):

(U) 21 May 1998

(U) Road Map Production Date: 23 June 2001