Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation
Patent
1987-03-10
1988-07-19
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including antenna orientation
342 75, 342 77, H01Q 300, G01S 1300
Patent
active
047588403
ABSTRACT:
The invention relates to a means for calibrating the elevation and azimuth angles of the scan axis of an antenna. Said means comprises a mobile target remote from the antenna, a video approach camera for detecting the mobile target, a theodolite equipped with a telescope having a reticule with two crossed designating axes, a video camera for the acquisition of the reticule image and images supplied by the telescope, means for controlling the guidance of the displacement of the target, so that the latter is positioned at a predetermined distance from the antenna in the vicinity of the scan axis, so that the image of the target in the telescope is as close as possible to the reticule axes. Said means also comprises a radio wave transmitter on board the target initiated or started when the image of the target enters the optical field of the approach camera and means for recording, during the operation of the on-board transmitter, the images of the target with respect to the reticule axes and for recording the corresponding values of the elevation and azimuth angles supplied by the measuring means.
REFERENCES:
patent: 3924235 (1975-12-01), Heller et al.
patent: 4199257 (1980-04-01), Dosch
Raumfahrtforschung, vo. 6, 1982, p. 265.
IEEE Int'l Convention Record, vol. 11, No. 5, 1963, p. 234.
Funkschau, vol. 2, 1976.
Dardenne Jean
Deschamps Patrick
Marty Jacques
Blum Theodore M.
Centre National d'Etudes Spatiales
Issing Gregory C.
Meller Michael N.
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