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Taoglas has unveiled active, multiband GNSS antennas engineered for applications that require critical high-accuracy positioning and timing, including autonomous driving and precision agriculture. Both the MagmaX2 AA.200 and Colosseum X XAHP.50 add to Taoglas’ high-precision GNSS range. “Safety standards for autonomous vehicles (UAVs, robotics and vehicles) and precision agriculture is an ever evolving arena,” said Ronan Quinlan, co-CEO and founder of Taoglas. “However, it’s increasingly apparent that high-precision positional accuracy is critical for both. At Taoglas we’re continuously innovating our GNSS antennas to deliver the very best precise location capabilities, but in more lightweight, compact structures, compared to larger counterparts already on the market. We look at the impact the antenna has on the actual positioning performance of your system, not just the antenna itself.” The MagmaX2 AA.200. (Photo: Taoglas) The MagmaX2 AA.200 is designed for space and weight constrained applications, such as robotic lawnmowers, Quinlan said. Embedded antenna versions are also available. The AA.200 is a low-profile active multiband GNSS magnetic mount antenna for use across most major constellations including GPS (L1/L2/L5), GLONASS (G1/G2/G5), Galileo(E1/E5a/E5b) and BeiDou(B1/B2). It exhibits excellent gain and good radiation pattern stability leading to a reliable GPS fix in areas of weaker signal strength. Positional accuracy better than 60 cm (DRMS) is achievable, even without RTK corrections services. Accurate positioning down to 1.4 cm has been demonstrated with today’s multiband GNSS receivers and RTK services in the field. The Colosseum X XAHP.50 antenna. (Photo: Taoglas) The Colosseum X XAHP.50 is a geodetic-quality small-dome antenna suitable for a vehicle roof mount or pole mount. “Every element and aspect of the antenna performance has been optimized during the design of this antenna,” Quinlan said. “This includes many deep interlocking rf parameters for true accurate centimeter-level positioning, compared to legacy meter-only level systems. Phase center variation, group delay, multipath rejection, axial ratio over angle all become critical considerations and performance targets.” The XAHP.50 is engineered to operate with incredibly high precision capabilities on the full GNSS spectrum. Sub meter positional accuracy better than 55cm (DRMS) is achievable, even without the use of RTK correctional services. This allows the user to achieve higher location accuracy, as well as stability of position tracking in urban environments. The XAHP.50 has excellent performance across the full bandwidth of the antenna and its design has an even gain across the hemisphere giving excellent, broad axial ratio which in turn makes it resilient to multipath rejection and excellent phase centre stability. Accurate positioning down to 1.4 cm has been demonstrated with today’s multiband GNSS receivers and RTK services in the field. Antenna Development “In the design phase we simulate using electromagnetic analysis software and tweak every parameter,” Quinlan said. “Once we are happy with the results, we build our prototypes and test in scientifically controlled chamber and test environments validated by the European Space Agency, with repeatable GNSS signals. “We then move onto field testing in open-sky conditions and in non-line of sight environments to verify real-world performance with today’s state-of-the-art receiver systems from such leading companies as u-blox and Septentrio. What’s more, every single antenna coming off our production line goes through strict in-line sensitivity testing to ensure consistent validated performance. We take our commitment to quality and safety very seriously in the coming age of autonomous operation,” Quinlan concluded.