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56 Report | CUAV Expo Americas 2020 in Airborne Systems and Equipment Certification’ and DO-254C, ‘Design Assurance Guidance for Airborne Electronic Hardware’. “Finally, there is a manufacturing component to a TSO. The FAA must be convinced – through multiple audits every year – that your manufacturing, quality and configuration control procedures can output the product with high quality and reliability, with continuous improvements and adjustments to those procedures.” As more and more UAS manufacturers work towards type certifications – which are similar to TSOs but cover entire aircraft models, and are thus even more arduous to obtain – integrating components that already have TSO certification saves the manufacturers enormous time and effort. “It’s also critical for airspace access,” Ramsey said. “Many regulatory agencies around the world have either restricted transponder or ADS-B use, or plan to restrict the use of their airspace to certified systems only. That’s because air traffic control and other aircraft will make decisions based on what your system is reporting, so the quality of that system is taken into account.” We caught up with Doosan Mobility Innovation (DMI), who updated us on its hydrogen fuel cell technologies, which we discussed in UST 22 (October/ November 2018). The company showcased its hydrogen power pack, the DP30, and its DS30 UAV (which is configured to integrate the DP30), which has been launched as the South Korean company’s fully commercialised hydrogen-powered octocopter system. “With a hydrogen fuel cell UAV, 2 hours of flight time is possible, thanks to the energy density of the fuel cell system being three to four times higher than that of batteries,” said Jessie Yeo. “After more than 3 years of development, we launched the product onto the market last October and started mass production. “Our DP30 powerpack has been engineered with safety measures such as hybrid batteries to enable redundancy at take-offs and landings. And when fuel runs low – which is calculated using the pressure inside the hydrogen tank – emergency warnings will pop up, in the form of red LED lights at the rear of the powerpack. “We also provide our own GCS. That is web-based, so users can plan mission flights and view the real-time status of the UAV using their smartphones or laptops.” The DMI GCS can control multiple fleets simultaneously, and in July the company demonstrated a swarm flight operation of UAVs that was programmed and performed via the GCS. “We’ll also soon launch the DS30Pst, a Pixhawk-compatible version of the UAV, which will enable an unlimited communication distance via LTE network links, and multiple payload options,” Yeo noted. In areas where LTE communication is hindered, users will be able to switch to more standard RF links using a simple toggle switch. DMI is also developing an RF data link with a range of up to 20 km, which is due for release later this year, with another version giving up to 40 km to be developed in the near future. We spoke to Teleidoscope about its Single Point Target Designator software for enabling UAS operators to select and track moving and stationary objects identified by their UAVs’ payloads, for follow-me or intelligent surveillance operations. As Matt Rabinovitch told us, “Our algorithms use classical computer vision rather than machine learning. The benefits of that include our ability to track any image patch or object, even very small ones, rather than being restricted to tracking vehicles or people, as many systems are, as well as partial and full occlusion recovery capabilities. “It also means we neither require nor use any image or video data for ‘training’ our system. Our results are consistently reproducible and quantifiable, and can be embedded on resource-constrained devices such as CPUs or CPU-FPGA hybrids.” The software is commercially available and has been successfully integrated and tested on various UAVs, none of which required hardware modifications (for video processing or otherwise) to run the company’s software. Riegl discussed its newest Lidar system for integration into UAVs, the VUX- 240. It is based on the company’s October/November 2020 | Unmanned Systems Technology DMI’s DP30 hydrogen powerpack offers fuel cell UAVs up to 2 hours of flight time Screen displays from Teleidoscope’s Single Point Target Designator