Synthetic aperture multi-telescope tracker apparatus

Details Synthetic aperture multi-telescope tracker apparatus Synthetic aperture multi-telescope tracker apparatus

1985-06-10

1987-05-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250203, 356141, G01T 120, G01B 1126

Patent

active

046670904

ABSTRACT:
A plurality of telescopes provide output return signals which are applied both directly and in sampled form to a photo-detector cell. The detected signals from the photo-detector will represent the constant and transient errors of the telescope system. A low pass filter insures that the tracker provides only the constant or D.C. component of the error, while a high pass filter insures that the existing measuring devices for each telescope beam provide only the transient or A.C. component of the error. The A.C. and D.C. error signals are summed together with the appropriate applied gains on each channel such that the sum reconstructs the original telescope position error with good fidelity.

REFERENCES:
patent: 3578975 (1971-05-01), Wheeler
patent: 3591292 (1971-07-01), Feuchter et al.
patent: 3723745 (1973-03-01), Fletcher et al.
patent: 3992629 (1976-11-01), Chapman
patent: 4219811 (1980-08-01), Herman et al.
patent: 4356392 (1982-10-01), Wittekock et al.
patent: 4384198 (1983-05-01), Williamson
patent: 4413909 (1983-11-01), Pohle
patent: 4419012 (1982-12-01), Stephenson et al.

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