Semi-automatic apparatus for satellite tracking

Details Semi-automatic apparatus for satellite tracking Semi-automatic apparatus for satellite tracking

Aug 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ifac.sympr....s&link_type=abstract

International Federation of Automatic Control, Symposium on Automatic Control in Space, 6th, Tsakhkadzor, Armenian SSR, Aug. 26-

Mathematics

Logic

Computer Techniques, Laser Range Finders, Satellite Tracking, Tracking Stations, Trajectory Analysis, Automatic Control, Cathode Ray Tubes, Display Devices, Ephemerides, Technological Forecasting

Scientific paper

ONERA has experimented successfully a new semi-automatic process and apparatus permitting, by day or by night, satellite acquisition and tracking with laser rangefinder. The principle of this system is described: it consists in replacing the conventional sighting telescope by a cathode screen. There appears on this screen: a trace representing the assumed trajectory provided by a computer from the ephemerides, and a bright spot representing the rangefinder axis. An operator sweeps this axis along the trajectory; when an echo is obtained, the satellite ephemerides are automatically adjusted. The paper describes the apparatus and gives the results obtained: 8 night passages on GEOS and BEACON satellites give 240 laser echoes. Developments are under way to extend the system to more imprecise ephemerides, and to day operations.

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