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Defense Advanced GPS Receiver (DAGR)

The AN/PSN-13 Defense Advanced GPS Receiver (DAGR, pronounced dagger) is a lightweight and compact replacement for the AN/PSN-11 Precision Lightweight GPS Receiver (PLGR). DAGR is implemented in integrated platforms as well as a hand-held unit for the advanced and basic GPS receiver user. DAGR's primary function is to navigate through terrain using stored waypoint position information. The DAGR is also used in operations such as waypoint calculations, data transfer, targeting, determining jamming sources, gun laying, and man overboard.

Gloved soldier checks coordinates with Defense Advanced GPS Receiver (DAGR)
Gloved soldier checks coordinates with Defense Advanced GPS Receiver (DAGR).

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AN/PSN-13 Defense Advanced GPS Receiver (DAGR)

AN/PSN-13 Defense Advanced GPS Receiver (DAGR) provides authorized Department of Defense (DoD) and foreign military sales users with a military grade hand-held GPS receiver that weighs less than a pound. DAGR development began in FY2000 with fielding in 2005. Through August of 2007, the US and its allies ordered more than 185,000 DAGR systems at a cost of approximately $432 million (excluding initial test deliveries). Allied countries that have ordered the DAGR include: Australia, Bahrain, Canada, Czech Republic, Denmark, France, Germany, Hungary, Korea, Kuwait, Portugal, Spain, UK in addition to the United States. The prime contractor is Rockwell Collins Government Systems from Cedar Rapids, IA.

Defense Advanced GPS Receiver (DAGR) Description

Airman 1st Class Steve Vonack, 3rd Air Support Operations Squadron tactical air control party, uses an AN/PSN-13 Defense Advanced GPS Receiver (DAGR) to mark the target locations during an exercise May 29 on the Pacific Alaska Range Complex, Eielson AFB, Alaska, 29 May 2007
Airman 1st Class Steve Vonack, 3rd Air Support Operations Squadron tactical air control party, uses an AN/PSN-13 Defense Advanced GPS Receiver (DAGR) to mark the target locations during an exercise May 29 on the Pacific Alaska Range Complex, Eielson AFB, Alaska, 29 May 2007.

AN/PSN-13 Defense Advanced GPS Receiver (DAGR) is a self-contained, hand-held, 12-channel, dual-frequency (L1/L2) GPS receiver. DAGR technology includes "All in View" satellite tracking and the tamper-resistant Selective Availability Anti-Spoof Module (SAASM) device to access the Precise Positioning Service (PPS) signal. DAGR includes provisions for installation in a wide variety of tactical vehicles and for integration with Army host systems. Managers of weapons systems with a GPS requirement develop DAGR installation kits for the specific platform.

DAGR provides highly accurate Position, Velocity and Timing (PVT) data to individual warfighters and integrated platform users. When operated with COMSEC, the DAGR provides enhanced anti-spoof and anti-jam protections. DAGR supports position location, target location, rendezvous and en-route and terminal navigation. Up to 999 waypoints can be stored in memory or 15 routes with up to 1,000 legs for each. Maps can be loaded.

DAGR is the replacement for and is backward compatible with the AN/PSN-11 Precision Lightweight GPS Receiver (PLGR), a five-channel GPS receiver first fielded in 1994. The demand for DAGR systems exceeded production capacity so service life extension of the predecessor PLGR system was implemented to cover the gap.

DAGR dimensions are:

  • Length: 6.35 inches
  • Width: 3.46 inches
  • Depth: 1.58 inches
  • Weight: 1 lb. w/batteries

There are two variants of DAGR based on technology improvements during its lifecycle:

  • AN/PSN-13, NSN 5825-01-516-8038 (SAASM 3.1)
  • AN/PSN-13A, NSN 5825-01-526-4783 (SAASM 3.2)

Defense Advanced GPS Receiver (DAGR) Batteries & Accessories

The DAGR is primarily a handheld unit with a built-in integral antenna, but can be installed in a host platform (ground facilities, air, sea, and land vehicles) using an integration cable, external power source and an external L1/L2 antenna. DAGR accessories include alternative antennas (vehicle, helmet, external) and power sources with associated cables as well as vehicle mounting brackets, cables for connection to a PC or other devices, and a nylon personnel carrying case (NSN 5895-01-521-3111). When internal power is used, DAGR requires four AA batteries for primary power (in standard battery pack NSN 6135-01-521-3064) plus one Half-AA 3.6 volt lithium battery (NSN 6135-01-435-4921) to maintain memory.

The DAGR technical manual is TM 11-5820-1172-13 (several versions evolved as DAGR software capabilities changed). The DAGR Operator's Pocket Guide is TB 11-5820-1172-10.

DAGR primary power standard battery pack NSN 6135-01-521-3064 with four AA batteries
DAGR primary power standard battery pack NSN 6135-01-521-3064 with four AA batteries.

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