Inside GNSS Media & Research

MAR-APR 2018

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30 Inside GNSS M A R C H / A P R I L 2 0 1 8 www.insidegnss.com A mong the hot topics in Munich was the role of GNSS in the burgeoning field of automated and unmanned sys- tems. Michael Baus, Program Director at Robert Bosch GmbH, described his company's fresh approach to precise point positioning (PPP) for autonomous road transport. "Our new vehicle motion and positioning sen- sor (VMPS) will hit the road in 2020 and will be one of the first GNSS inertial positioning systems using correction data for highly automated driv- ing," he said. "e VMPS will output a safe position, velocity, attitude and time, using a multi-frequency, multi- constellation GNSS system and our sophisticated fusion and integrity algorithms. e system will use wheel spin sensors as well as automotive-grade, safe inertial sensors to bridge GNSS outages." Yes, that's right, he said "safe" two times. And then he said it again, this time with a "not": "You all know GNSS alone cannot be safe; we cannot control the infrastructure. So, we are using a correction service consisting of a dense network of reference stations spaced about 250 kilometers apart, and we're starting in Europe, North America, going to China, Japa n, South Korea and the rest of the auto- motive countries." Processing cen- ters, he explained, will calculate orbit and atmosphere corrections. Data is transmitted via geosta- tionary satellites as well as over cloud connection to the vehicle, Baus explained, and the VMPS uses it to calculate the output signals and the all-important integrity information. "We are working in partnership with Trimble for safe and precise positioning, and with u-blox for automotive safe positioning, and, together with Mitsubishi Electronics and Geo++, we are a stake- holder of the Sapcorda joint venture, whose target is worldwide safe and precise correction data." SBAS for All? Another way to better and surer precision is t hroug h space-based aug mentat ion systems (SBAS), such as the GPS Wide Area Augmentation System (WAAS) in the United States or EGNOS in Europe. ese regional satellite systems provide GNSS correction data, giving increased accuracy and integrity for key "safety-of-life" applications, including civil aviation. "Regions like the U.S., Europe, Russia or China may be able to afford to build their own SBAS sys- tems," said Miguel Romay, Executive Director of GNSS Aerospace at Madrid-based GMV, "but what if you are in a plane flying from Washington to Rio de Janeiro? In the U.S. you have SBAS, but in Brazil you don't." Romay was in Munich to talk about GMV's brand new "magic" user terminal, which uses SBAS capabilities onboard an Inmarsat GEO satellite already in orbit to provide GNSS correction over a wide area. "We thought there was a possibility to develop a company that provides SBAS services to different countries," he said. "So, they don't have to develop their own space-based system. "We are cooperating with Lockheed Martin in the U.S., and we have a project in the Australia/New Zealand region where we are already transmitting through Inmarsat." Specifically, GMV is providing the processing facilities in charge of the augmenta- tion system, Lockheed Martin is doing GEO satel- lite signal uplink, and Inmarsat is responsible for the SBAS payload on the 4F1 satellite. "Having multiple constellations allows us to move in the direction of a global, not regional, SBAS," Romay said. "We have an operational test bed. All the infrastructure was completed in Octo- Munich Hot Licks PETER GUTIERREZ, Inside GNSS's European correspondent, is a senior reporter and editor based in Brussels, Belgium, who has written about Europe's GNSS programs for many years. He received his bachelor's degree from the University of Texas at Austin and a M.S. degree from the University of Massachusetts at Amherst. BRUSSELS VIEW This year's Munich Satellite Navigation Summit featured pointed debates on high accuracy, integrity and authentication, exploring the trade-off between GNSS performance and security. And, as usual, there were some new products and systems looking to make a splash. Miguel Romay, Executive Director of GNSS Aerospace at GMV

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