Browsing International Telemetering Conference Proceedings, Volume 54 (2018) by Authors
SIMULATED RADIOS FOR STRESS TESTING OF INET LINK MANAGERFecko, Mariusz; Kim, Heechang; Cichocki, Andrzej; Wong, Larry; Radke, Mark; Young, Tom; Grace, Thomas; Perspecta Labs; Bevilacqua Res. Corp.; USAF AFMC; et al. (International Foundation for Telemetering, 2018-11)IP-based telemetry systems such as iNET require extensive lab testing prior to fielding. Current iNET testbeds typically use several real radios and a mix of pre-recorded and live telemetry traffic. However, stress testing the iNET Radio Access Network (RAN) is hard to perform experimentally because of the limited number of available telemetry radios. To scale up the testing to a larger number of radios, we developed portable, low-cost VM-based telemetry radio simulators that interact with the iNET Link Manager (LM) and real radios to provide additional (emulated) links and queue depth reports. This approach makes it possible to establish the upper limit on the numbers of Test Articles that the LM can handle under various conditions. It also allows for fast reconfiguration of the number and set-up of simulated radios to test out specific use cases. The simulated radios free up real radios for off-site tests while preserving the ability for the continuous testing of LM features until real radios can be reclaimed. The developed testbed is portable owing to its lightweight set-up on the low-cost mac-mini computers. This makes it easy to use simulated radios also in off-site testbeds and field experiments.
SPECTRUM USAGE MEASUREMENT SYSTEMMadon, Phiroz; Fecko, Mariusz; Ziegler, Robert; Samtani, Sunil; Harasty, Daniel; Shen, John; Painter, Mike; Jones, Charles; Young, Tom; O’Brien, Thomas; et al. (International Foundation for Telemetering, 2018-11)DoD flight test ranges need to track telemetry spectrum usage to defend against future sell-offs, as well as operate with high spectral efficiency. The Spectrum Usage Measurement System (SUMS) characterizes spectrum usage and requirements at test ranges, and assesses operational impacts and costs on Test and Evaluation. The system relies on mission planning and scheduling data acquired from test range planning systems, as well as measurements obtained from telemetry receivers and frequency scanning sensors. SUMS key capabilities include: (1) collecting over-the-air evidence of actual assigned frequency usage; (2) combining this data with mission plans to produce an accurate representation of telemetry spectrum usage through the space, time, and frequency dimensions; (3) providing users with a data warehouse of spectrum usage, potentially spanning multiple years, with test ranges across CONUS, and (4) providing data analytics and visualization techniques that combine 3-D terrain-based heat maps with usage metrics charts.