## 3 Results
Significant improvements were made in the numbers and types of portable tactical communications antennas, high-capacity cellular modems, and local wireless communications equipment, and in securing access to UAF's computer-communications network for reliable operations. Nearly all intended mission capabilities were demonstrated during the campaign, including incorporation of more capable navigation systems, communications, surveillance systems, and Sense And Avoid (SAA)/Detect And Avoid (DAA) technologies. Those that fell short due to time and resources continue to be addressed by UAF, especially as they are considered to be necessary capabilities for conducting BVLOS missions in the arctic. A synopsis of these is provided below. * Communications: UAF's previous efforts focused on providing simple tactical communications between UAS and their associated Ground Control Stations (GCS). Under TCL3, the focus shifted to growing this into a fully networked system, supporting communications between the UAS, GCS, USS, as well as integrating sensors (e.g., radar) with the NASA UTM system. While elements of this system had already been demonstrated during TCL2 at PFRR, these operations had been conducted from a limited set of locations. Operations at UAF's main campus for TCL3 required a more flexible communications system supporting numerous operating locations and associated technical assets. This drove the design to be a more complex network of field-deployable, tactical communication links enabling communications amongst participant GCS and sensor assets from remote locations, as well as providing access to internet via a combination of WiFi and/or 4G cellular networks. * Navigation: The TCL2 efforts demonstrated the basic capabilities of the laser altimeter system on UAF's S1000 octocopters to provide the terrain-following flight and assistance in automated landing. The S1000 also featured a Real Time Kinematic (RTK) GPS system, which was shown (accomplished after the TCL2 flight campaign) to provide greatly improved capability to support BVLOS landing operations. During the TCL3 campaign, UAF demonstrated the ability of this navigation system to successfully perform BVLOS landings/takeoffs at a variety of distances and flight conditions, including multi-leg BVLOS missions involving landing/takeoff operations. This was accomplished utilizing both a smaller F550 hexacopter and the heavier-duty S1000 platforms. * SAA/DAA: UAF made significant progress in the area of SAA/DAA, improving the ability of flight crews to manually deconflict multiple vehicles using enhanced display tools and in furthering our ability to provide automatic deconfliction. Successes included: (1) improved visualization tools for flight crews on their GCS consoles, including both the standalone Simulyze USS Web Client and information injected into UAF's Mission Planner GCS consoles already used by flight crews; (2) demonstrated ability of the Pixhawk autopilot to utilize inputs from the Automatic Dependent Surveillance Broadcast (ADS-B) on board the UAS to generate automated avoidance commands against other intruding UAS or manned aircraft (accomplished post TCL3 flight campaign); (3) demonstrated ability of the Simulyze USS to ingest and process ground-based radar inputs (EchoDyne MESA-SSR) and display this traffic on the USS Web Client and the UAS Mission Planner GCS; and (4) demonstrated ability of the IRIS Automation Hedgehog Collision Avoidance Module (HCAM) and camera system to generate and provide audio/visual traffic warnings to the UAS operator. While UAF did not complete all'reach-goals' for the effort (e.g., automated separation maneuvers commanded via radar inputs), we made progress and a plan to continue. Beyond these technical accomplishments, UAF engaged in a series of flight venues designed to further the capabilities of the UTM/USS system and our ability to utilize it.