<p>Armstrong researchers have developed a networked instrumentation system that connects modern experimental payloads to existing analog and digital communications infrastructures. In airborne applications, this system enables a cost-effective, long-range, line-of-sight network link over the S and L frequency bands that supports data rates up to 10 megabits per second (Mbps) and a practically unlimited number of independent data streams. The resulting real-time payload link allows researchers to make in-flight adjustments to experimental parameters, increasing overall data quality and eliminating the need to repeat flights.</p><p><strong>Work to date</strong>: The team has developed and flight-tested the 10 Mbps bi-direction aircraft-to-ground, line-of-sight network. A follow-on project, Space-Based Range Demonstration and Certification (SBRDC) Flight Demonstration #2, involved integration of this system with a phased-array antenna and controller to provide a 10 Mbps over-the-horizon network downlink. This prototype system was further refined into a more operational system that provided the Airborne Research Test System (ARTS) aboard the Full-Scale Advanced Systems Testbed (FAST) access to thousands of parameters from the heavily instrumented aircraft. Engineers were able to view ARTS network data output in the control room, without replacing any aircraft instrumentation or ground equipment. Additionally, four streams of network data from onboard hot-film sensors was recorded onboard and transmitted to the control room.</p><p><strong>Looking ahead</strong>: Work has begun to design a new system that incorporates state-of-the-art transceiver technology. The new system is expected to allow a five-fold improvement in throughput, to 40 Mbps.</p><p><strong>Benefits</strong></p><ul><li><strong>Flexible</strong>: Expands the utility of existing airborne platforms with legacy communications systems by supporting state-of-the-art payloads that leverage current network technology</li><li><strong>Economical</strong>: Achieves a bi-directional, line-of-sight network without the need to replace existing communications infrastructure</li><li><strong>Flight efficient</strong>: With real-time control of experimental parameters, reduces the need for repeat flights</li></ul><p><strong>Applications</strong></p><ul><li>Secure local line-of-sight communications</li><li>Global space-based communications via satellite links</li></ul>