NDLI: Performance analysis of IMU-augmented GNSS tracking systems for space launch vehicles

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Performance analysis of IMU-augmented GNSS tracking systems for space launch vehicles

Content Provider	Springer Nature Link
Author	Braun, Benjamin Markgraf, Markus Montenbruck, Oliver
Copyright Year	2016
Abstract	European space launch operators consider the potential of GNSS (global navigation satellite system) as a promising novel means of localization for the purpose of range safety of launch vehicles like Ariane and Vega, since it is expected that recurring costs are lower and accuracy is higher than currently existing systems like radar tracking. Range safety requires continuous information about the position and velocity of the launch vehicle to quickly detect the occurrence of catastrophic events. However, GNSS outages due, for example, to high jerks at fairing and stage jettisons or other external interferences like (un-)intentional jamming cannot be precluded. The OCAM-G experiment on Ariane 5 flight VA219 has provided evidence that GNSS is capable of providing a highly accurate position and velocity solution during most of the flight, but that outages of several seconds do occur. To increase the continuity of a GNSS-based localization system, it is proposed that the GNSS receiver is augmented by an inertial measurement unit (IMU), which is able to output a position and velocity solution even during GNSS outages. Since these outages are expected to be short, a tactical- or even consumer-grade IMU is expected to be sufficient. In this paper, the minimum IMU performance that is required to bridge outages of up to 10 s, and thereby meeting the accuracy requirements of range safety, is determined by means of a thorough simulation study. The focus of the analysis is on current generation microelectromechanical system (MEMS)-based IMU, which is lightweight, low-cost, available commercially and has reached acceptable maturity in the last decade.
Starting Page	117
Ending Page	133
Page Count	17
File Format	PDF
ISSN	18682502
Journal	CEAS Space Journal
Volume Number	8
Issue Number	2
e-ISSN	18682510
Language	English
Publisher	Springer Vienna
Publisher Date	2016-02-23
Publisher Institution	Council of European Aerospace Societies
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Range safety Launch vehicle IMU-augmented GNSS receiver Hybrid navigation system GPS metric tracking MEMS OCAM-G Ariane 5 Vega Aerospace Technology and Astronautics
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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