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Researchers are investigating the use of alternative radio transmission methods for military information systems. A recently launched program examines the use of ultrawideband technology in robust, scalable communications devices and networks, in radar and in collision avoidance sensors.

Years of designing, testing and deploying information architectures and technologies are paying off in the success of operation Enduring Freedom in Afghanistan. These successes in turn are laying the groundwork for future network-centric capabilities that will bring with them a considerable momentum for change in the U.S. defense infrastructure.

The U.S. Army has developed an airborne tactical command post that enhances company-level units' situational awareness with real-time voice and data connectivity. Mounted inside a UH-60 Black Hawk helicopter, the center features an integrated command and control system hosting an extensive communications suite and five fully automated workstations linked to a central computer that can operate a variety of battlefield software.

In the near future, access to U.S. naval vessels and facilities will be accomplished with the swipe of a card. The service is issuing smart cards for entry control and record-keeping purposes to all of its personnel. The rollout is part of a larger program to provide the devices for all U.S. Defense Department employees.

Although global positioning system technologies are being used widely in both the military and commercial arenas, research currently underway could broaden their reach by making the capability better, smarter, faster and less costly. One project, which is near completion, combines inertial navigation with global positioning system navigation to increase effectiveness. The second, a longer term program, is aimed at increasing users' ability to operate successfully in the face of enemy jammers or countermeasures.

Information assurance, preserving radio spectrum, ensuring interoperability and establishing secure wireless links are just some of the tasks on the menu for the Defense Information Systems Agency. The agency's Defense Department-wide mandate has placed it at the nexus of the infosphere that increasingly is defining military operations worldwide.

Information assurance, preserving radio spectrum, ensuring interoperability and establishing secure wireless links are just some of the tasks on the menu for the Defense Information Systems Agency. The agency's Defense Department-wide mandate has placed it at the nexus of the infosphere that increasingly is defining military operations worldwide.

New algorithms and signal processing technologies may reduce the vulnerability of global positioning system devices to electronic countermeasures. Antijam systems already are in production and are being incorporated into the latest U.S. Defense Department weaponry. Future iterations may bring signal assurance to even the smallest handheld consumer devices.

Assuring the integrity of information in radio frequency tactical networks is rapidly becoming a linchpin for the success of the U.S. Defense Department's Global Information Grid. Without cyberdefense advances, wireless domain devices cannot function properly in the face of information warfare, raising vulnerability issues for the entire U.S. communications infrastructure.