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A Real-Time Kinematic GPS Sensor for Spacecraft Relative Navigation

Montenbruck, O. and Ebinuma, T. and Lightsey, E.G. and Leung, S. (2002) A Real-Time Kinematic GPS Sensor for Spacecraft Relative Navigation. Aerospace Science and Technology, 6 (6), pp. 435-449.

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Abstract

The concept and prototype implementation of a spaceborne relative navigation sensor based on a pair of GPS receivers is presented. It employs two individual receivers exchanging raw measurements via a dedicted serial data link. Besides computing their own navigation solution, the receivers process single difference measurements of obtain their mutal relative state. The differential processing prvides a high level of common error cancellation while the resulting noise is minimized by approprate use of carrier phase measurements. A prototype relatve navigation sensor making use of the above concepts has been built up based o the GPS Orion 12 channel L1 receiver and quified in hardware-in-the-loop tests using a GPS signal simulator. It provides a relative navigation solution with representative r.m.s. accuracies of 0.5 m and 0.5cm/s, respectively, for position and velocity. For ease of use the relative state is provided in a co-moving frame aligned with the radial, cross-track and along-track direction. The purely kinematic nature of state estimation and the small latency make the system well suited of maneuvering spacecraft, while the minimalistic hardware requirements facilitate its use on microsatellite formations.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2002,
Title:A Real-Time Kinematic GPS Sensor for Spacecraft Relative Navigation
Authors:
AuthorsInstitution or Email of Authors
Montenbruck, O.UNSPECIFIED
Ebinuma, T.Center of Space Research, University of Texas
Lightsey, E.G.Center of Space Research, University of Texas
Leung, S.UNSPECIFIED
Date:2002
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:6
Page Range:pp. 435-449
Status:Published
Keywords:Relativnavigation, GPS, Formationsflug, Rendezvous & Docking, Orion
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Hauptabteilung Raumflugbetrieb und Astronautenausbildung
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 17:23

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