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DARPA Successfully Demonstrates, Transitions Advanced RF Networking Program

Field tests validate tech that automatically links diverse radio waveforms in contested environments

by USGovernment
December 17, 2020
in Technology News
2 min read
0
DARPA Successfully Demonstrates, Transitions Advanced RF Networking Program
14
VIEWS

A DARPA network technology program recently concluded field tests demonstrating novel software that bridges multiple disparate radio networks to enable communication between incompatible tactical radio data links – even in the presence of hostile jamming. The technology is transitioning to Naval Air Systems Command (NAVAIR) and the Marine Corps, which plans to put the software on a software reprogrammable multi-channel radio platform for use on aircraft and ground vehicles.

Started in 2016, the Dynamic Network Adaptation for Mission Optimization program, or DyNAMO, has developed technologies that enable automated, real-time dynamic configuration of tactical networks to ensure that heterogeneous radio nodes – whether on ground, air, or sea – can interoperate in a contested battlespace.

As a capstone event to conclude the program, DARPA recently demonstrated DyNAMO capabilities in over-the-air field tests at the Air Force Research Lab’s experimentation and test facility near Rome, New York. Diverse military tactical data links, including LINK 16, Tactical Targeting Networking Technology (TTNT), Common Data Link (CDL), and Wi-Fi networks were deployed to the test site. DyNAMO successfully provided uninterrupted network connectivity between all the data links under varying conditions in a simulated contested environment.

“Not only did we break the stovepipes and make the radios interoperable with each other, we showed that the network of networks DyNAMO creates has added resiliency,” said Aaron Kofford, program manager in DARPA’s Strategic Technology Office. “For example, a node was moving in the network, and one of the radios being used to transfer data was intentionally disabled. The data was being transferred over TTNT when the link was disabled, and DyNAMO automatically shifted that traffic to a different radio through LINK 16 without skipping a beat. From a user’s point of view, they don’t care if the data is coming to them from LINK 16 or TTNT, or CDL. All they care about is whether they can send and receive a message.”

Kofford likened it to how modern cell phone technology automatically reroutes traffic if a link drops, so two people on a call can continue talking as if nothing happened. Exactly what links are being used by the software at any moment to maintain the call connection isn’t something users care about as long as they can communicate.

Current methods to bridge incompatible data links require deploying a large airborne platform housing the various radio datalinks on board. The airborne platform serves as a central gateway to interconnect the different links. Instead of this centralized model, DyNAMO employs a distributed gateway concept treating every node on the network as either a DyNAMO-enabled node or a legacy, non-DyNAMO enabled node. DyNAMO software can interoperate with both types of nodes, so the DyNAMO-enabled nodes serve as distributed gateways across the network eliminating a central gateway’s single point of failure.

Another benefit of DyNAMO is that it works with existing datalink hardware.

“DyNAMO is software, so it doesn’t require buying new radios or acquiring additional network hardware,” Kofford said. “It’s lightweight software that can reside on an Android device, like a tablet or a phone. In our experimentations, we were running DyNAMO on tablets and phones, as well as on laptops and similar devices. That’s a stark contrast to using a large centralized gateway that resides on a large aircraft.”

The field experimentation involved both static and mobile nodes. DyNAMO technology is slated for incorporation into NAVAIR/Marine aviation platforms through existing NAVAIR programs of record. Various Air Force representatives also observed the field tests.

Tags: darpaNetworksradioRF networking
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