TUD

Institut für Automatisierungstechnik

Autonomous navigation for low-earth orbit spacecraft

Duration: 01-October-1997 to 31-March-2000

Project INTAS-96-2156

Participants:

  • Institute of Automation at TU-Dresden, Germany (Prof. Janschek):
    project supervision and coordination, reporting, publications; organization of project meetings; initialization and responsibility for regular information exchange by email; responsibility towards INTAS; magnetometer based navigation, onboard architecture;
  • Institute of Cartography at TU-Dresden, Germany (Prof. Buchroitner):
    feature recognition of appropriate landmarks, global feature data base;
  • Institute for Image Processing, Joanneum Research Graz, Austria (Dipl.Ing. Paar):
    temporal optimization of pattern matching including hardware aspects, test images;
  • Moscow Aviation Institute, Department 704 (Prof. Krasilshikov):
    coordination of Russian participant research; position and attitude determination using GLONASS/GPS receiver; landmark based navigation, camera data;
  • Moscow Aviation Institute, Department 604, Russia (Prof. Malyshev):
    cloud models for evaluation of performance of EO camera; scheduling of observations for both backup navigation and traffic monitoring; analysis of mission performance;
  • Ufa State Aviation Technical University, Russia (Prof. Kusimov):
    development of optoelectronic navigation system based on optical correlator.

Summary

Objectives

The main objective of the project is to develop novel techniques for a minimum hardware autonomous navigation system for low-earth orbiting spacecraft using advanced methods for information fusion. The techniques provide an adequately accurate and at the same time a cheap and reliable solution to the problem of spacecraft navigation (determination of instantaneous spacecraft orbital position and attitude) and allow the substitution of the conventional hardware redundancy by functional redundancy.
The proposed concept is based on an integrated GLONASS/GPS receiver as primary equipment for nominal operation. Backup navigation is based on the onboard measurement of the geomagnetic field and realtime processing of landmark images delivered by an earth observation camera. The fusion of the different information sources is performed by advanced filtering and estimation methods.
The main application area of the developed techniques is anticipated for the next generation Low Earth Orbit (LEO) Satellite Networks, which require maximum onboard autonomy based on cost optimized technical solutions. A dissemination of the developed technologies is equally possible also for terrestrial mobile systems (e.g. robots).

Research Activities

Key topics of this research project are the development of the appropriate methods and algorithms to realize such a minimum hardware system. This includes research activities in the following areas: GLONASS/GPS based navigation (using novel Russian receiver technology), magnetometer based navigation, landmark navigation principles, landmark feature recognition, realtime landmark image processing, robust information fusion techniques for heterogeneous error characteristics of measurements, optimized observation strategies taking into account cloud cover of the earth surface, analysis of satellite network constellation performances.

Results

The anticipated research results include the layout of the autonomous navigation system, realtime algorithms for the generation matched spatial filters, realtime algorithms for position and attitude determination in nominal and backup modes, a breadboard of a compact optical correlator, analysis of the navigation system performances under realistic environmental conditions (cloud cover), analysis of the performances of the satellite constellation, optimized observation strategies, recommendations for equipments and PC-oriented software products for study and verification of the created techniques.

Summary Paper for WP2 "GLONASS/GPS BASELINE NAVIGATION"
   470 K
Summary Paper for WP3 "MAGNETOMETER BASELINE NAVIGATION"
   152 K
Summary Paper for WP4 "LANDMARK BASELINE NAVIGATION"
   97 K
Summary Paper for WP6 "OPTOELECTRONIC NAVIGATION "
   126 K
Summary Paper for WP8 "INFORMATION FUSION"
   132 K
Summary Paper for WP9 "MISSION ANALYSIS CONSIDERING CLOUD COVER"
   84 K
Summary of Results: AUTONOMOUS NAVIGATION FOR LOW EARTH ORBIT SPACECRAFT USING INFORMATION FUSION TECHNIQUES INTA"
   15.7 K
Stand: 01.09.2006 16:08
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