Physics – Optics
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978fmet.symp..178k&link_type=abstract
In NASA. Goddard Space Flight Center Flight Mechanics/Estimation Theory Symp. p 178-193 (SEE N79-14121 05-13)
Physics
Optics
1
Orbit Calculation, Orbital Position Estimation, Satellite Attitude Control, Satellite Navigation Systems, Satellite Orbits, Earth Surface, Electro-Optics, Imaging Techniques, Landmarks, Remote Sensors
Scientific paper
A known linear landmark navigation system is described. It involves the use of an electro-optical sensor to provide sightings to linear earth features such as highways and coast lines. The sensor concept and the navigation system mechanization are described. Performance analysis results show that landmark sightings provide accurate navigation update and that this accuracy can be preserved using radar altimeter measurements. Description of a stellar inertial attitude determination system is also presented. Attitude reference performance consistent with the requirement of the navigation system is shown to be achievable by this method.
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