News


3A Airborne Receiver (U)

Overview (U):

(U) The Rockwell Collins 3A receiver is one of the primary receivers on-board DoD aircraft used for navigation.

Details (U):

Description User Impact Programmatics Images
Related Initiatives Related Requirements Related Categories Road Map Placements
Additional Hotlinks Lead Office POC  


Description (U):

(U) Most of the current DoD aircraft are scheduled for integration with GPS JPO-procured 3A and MAGR. These receivers are fully mil-qualified and have undergone extensive developmental and qualification testing.

(U) Although the 3A receiver was developed in 1985, it continues to perform well in the field; the 3A receiver has only received a modest upgrade and is considered to be "older technology." It has five channels to receive and process 5 distinct GPS satellite signals and operates with GPS precision code (P-code) on both GPS L1 and L2 frequencies. The three primary functional shortcomings of the 3A receiver are that:
(U) 1) it is not field reprogrammable (in other words it must be returned to a depot for upgrade),
(U) 2) it does not implement an enhanced anti-spoofing function (recognition and avoidance of deception - intentional or unintentional signal interference)
(U) 3) it is large, heavy and contains many outdated/obsolete components.

(U) The depot at Warner Robins-Air Logistics Command (ALC) provides sustainment support for the 3A receivers, and will continue in that role for the foreseeable future.

User Impact (U):

(U) The GPS 3A receiver is the first GPS DoD receiver widely used in aircraft. It provides highly accurate, all weather navigation and timing information to the aircraft allowing more precise flight patterns, rendezvous, and weapons delivery.

Programmatics (U):

(U) Operational.

(U) Organizations and Funding:

Images (U):

(U) None.

Related Initiatives (U):
NameTitle
Embedded GPS Inertial Nav. Sys.Embedded Global Positioning System (GPS) Inertial (EGI) Navigation System
GPS Block IIANAVSTAR Global Positioning System(GPS) Block IIA
GPS Block IIFNAVSTAR Global Positioning System(GPS) Block IIF
GPS Block IIRNAVSTAR Global Positioning System(GPS) Block IIR
GPS Receiver Applications ModuleGlobal Positioning System (GPS) Receiver Applications Module (GRAM)
Miniaturized Airborne GPS Rec.Miniaturized Airborne Global Positioning System (GPS) Receiver (MAGR)
This Table Is Unclassified.

Related Requirements (U):None.

Related Categories (U):
NameTitle
ReceiversReceivers
This Table Is Unclassified.

Road Map Placements (U):

NameTitle
NAVIGATIONSPACE FORCE ENHANCEMENT: NAVIGATION
This Table Is Unclassified.

Requirements, Funding and Additional Hotlinks (U):

(U) None.

Lead Office (U):

(U) Air Force.

Point of Contact (U):

(U) Maj Chuck Kastenholz, SMC, Open Phone: (310) 363-6402.

Date Of Information (U):

(U) 17 May 1998





(U) Road Map Production Date: 12 July 1999