SAIC to develop navigation sensor fusion technology to reduce U.S. dependence on GPS

Updated: Three join DARPA ASPN navigation sensor-fusion program to reduce U.S. need for GPS

WRIGHT-PATTERSON AFB, Ohio, 5 Feb. 2013. Navigation and guidance experts at SAIC Inc. in McLean, Va., are developing a prototype system for land, sea, and airborne applications that can accept inputs from several kinds of navigation sensors so that warfighters can maintain navigation capability with or without Global Positioning System (GPS) satellite navigation.

SAIC is doing the work under terms of a $2.9 million contract awarded last week for the second phase of the All Source Positioning and Navigation (ASPN) program, which seeks to develop algorithms and a prototype sensor-fusion system to enable low cost navigation for military users on any operational platform and in any environment, with or without GPS.

Awarding the contract were officials of the U.S. Air Force Research Laboratory at Wright-Patterson Air Force Base, Ohio, on behalf of the U.S. Defense Advanced Research Projects Agency (DARPA) in Arlington, Va.

DARPA awarded first-phase ASPN contracts early last year to the Charles Stark Draper Laboratory Inc. in Cambridge, Mass., and to Argon ST Inc. in Fairfax, Va. In the first phase of ASPN, Draper Lab and Argon ST experts focused on developing navigation algorithms, and a navigation software architecture. Draper Lab's contract was for $599,923, and Argon ST's contract was for $1.9 million.

In the initial phase of the ASPN program, scientists from Draper Lab and Argon ST concentrated on developing the architectures, abstraction method, and navigation filtering algorithms necessary for rapid navigation sensors integration and reconfiguration.

In essence, the companies showed that an adaptable, plug-and-play capability for navigation systems is achievable. Now SAIC will bring this technology to the next level.

In the program's second phase SAIC researchers will continue algorithm development build a prototype ASPN system for demonstration and evaluation. SAID not only will develop real-time algorithms, but also will field these algorithms on size-, weight-, and power (SWaP)-representative prototype hardware able to accept an arbitrary set of inputs, regardless of native application of the sensors used.

Most current navigation systems rely on a combination of GPS, inertial measurement unit (IMU), and sometimes other navigation sensors to provide accurate positioning and navigation information, DARPA researchers say.

Military navigation systems designers want to improve their systems by combining different sensors, such as laser rangers, cameras, and magnetometers. The problem, however, is today's navigation sensors usually have custom filtering for their specific sensors, and are not readily adaptable to new capabilities and threats.

The ASPN program seeks to develop new navigation sensor fusion technology that can accommodate any combination of sensors in a plug-and-play fashion to create robust positioning and navigation technology in the face of new battlefield conditions and missions, while reducing costs.

For more information contact SAIC online at, the Air Force Research Lab at, or DARPA at

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