Title: New Effective Multipath Mitigation and Initial Assessment of the Radio and Inertial Navigation Sensor("RINA")
Author(s): Satoshi Yamazaki, Koji Sunami, Michio Kawakami
Published in: Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016)
September 12 - 16, 2016
Oregon Convention Center
Portland, Oregon
Pages: 3702 - 3706
Cite this article: Yamazaki, Satoshi, Sunami, Koji, Kawakami, Michio, "New Effective Multipath Mitigation and Initial Assessment of the Radio and Inertial Navigation Sensor("RINA")," Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 3702-3706.
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Abstract: This paper describes new effective methods of multipath mitigation used by a new generation positioning sensor for the Japanese launch vehicles. This sensor is called the Radio and Inertial Navigation sensor(RINA) which is developed by JAXA. Furthermore, we assess the positioning accuracy in a demonstration flight, and the capability of implementing GNSS/INS integration by comparing the GNSS measurements only. It is recognized that the GNSS positioning at launch sites is mainly affected by multipath of the local environmental characteristics, which include many infrastructures for supporting launch operations. This cause has prevented us from adopting the GNSS measurements for the use of flight safety and the guidance control of the launch vehicles in all flight phases. The RINA utilizes the GNSS and 3-axis MEMS (Micro Electro Mechanical Systems) accelerometer integrated positioning for mitigating multipath. The unique methods of the position and the velocity determination near launch sites can output the better accurate values than GNSS measurements. The RINA prototype model development completed its work in 2015 with the goal of producing a high accuracy flight safety system. To enhance cost effectiveness, the RINA design was implemented using existing Commercial Off The Shelf(COTS) parts, receivers and processors that were ruggedized for the launch vehicle environments. The paper details the work done to develop and validate these approach.