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Robust Tightly Coupled Hybrid Navigation for Space Transportation

Trigo, Guilherme Fragoso and Theil, Stephan and Vandersteen, Jeroen and Bennani, Samir and Roux, Christophe (2018) Robust Tightly Coupled Hybrid Navigation for Space Transportation. Journal of Spacecraft and Rockets. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.A34232 ISSN 0022-4650

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.A34232

Abstract

This paper presents the design of a tightly coupled inertial/global avigation satellite system (GNSS) hybrid navigation system tailored to rocket launch applications. The tight architecture, selected for its design flexibility and robustness, uses time-differenced GNSS carrier phases to support the pseudorange measurements in the correction of strapdown inertial propagation and in-flight inertial sensor calibration. The robust filter design departs from a high-order inertial sensor calibration model, accounting for multiple error sources. Thorough order reduction is then performed through impact and observability analysis of each inertial sensor uncertainty for several sensor grades and under a set of launch trajectories. On-the-pad alignment sequence is also analyzed. Schmidt–Kalman filtering is used to account for sensor errors without their explicit estimation. The GNSS filter model is also reduced, maintaining robustness against receiver clock, atmospheric delays, and channel biases. Testing is done using simulated and real GNSS measurements produced from Vega launcher real-flight data. The effectiveness of the design is demonstrated against a full-order filter under a variety of inertial error sources. Comparison to a loosely coupled setup shows clear advantage under partial GNSS outage conditions, whereas comparison to inertial-only solutions reveals stable position/velocity performance and attitude estimation improvement equivalent to a one-step inertial sensor upgrade.

Item URL in elib:https://elib.dlr.de/123529/
Document Type:Article
Title:Robust Tightly Coupled Hybrid Navigation for Space Transportation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Trigo, Guilherme FragosoGuilherme.Trigo (at) dlr.dehttps://orcid.org/0000-0001-8173-9592
Theil, StephanStephan.Theil (at) dlr.dehttps://orcid.org/0000-0002-5346-8091
Vandersteen, JeroenEuropean Space AgencyUNSPECIFIED
Bennani, SamirEuropean Space AgencyUNSPECIFIED
Roux, ChristopheELV-AVIO SpAUNSPECIFIED
Date:November 2018
Journal or Publication Title:Journal of Spacecraft and Rockets
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.A34232
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0022-4650
Status:Published
Keywords:Tightly-coupled Navigation, Hybrid Navigation, Space Transportation Navigation, GNSS, Inertial Sensor, Schmidt-Kalman Filter, Vega Launcher
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Navigation and Control Systems
Deposited By: Trigo, Guilherme Fragoso
Deposited On:22 Nov 2018 09:21
Last Modified:22 Nov 2018 09:21

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