Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1977-07-13
1978-10-31
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356141, G01J 120
Patent
active
041236513
ABSTRACT:
A laser radar system and method for tracking speckle generated by the interaction of a beam of coherent electromagnetic radiation with a target to enhance the signal to noise ratio of a return signal is disclosed. The radar system is formed with a transceiver having a common transmit/receive optical path including beam steering mirrors capable of impressing a conical scan on a transmitted and received beam, a heterodyne circuit capable of sensing the position of a speckle maximum within the aperture of the transceiver, a peak detector capable of processing the output of the heterodyne circuit, a phase sensitive detector capable of producing a two axis discriminate proportional to the offset error of the speckle maximum and a transceiver control responsive to the two axis discriminate to provide transceiver pointing to maintain the speckle maximum within the aperture. The system results in a speckle maximum in the plane of the receiving optics and through appropriate feedback action the transmitted beam is servoed to insure that the speckle maximum remains in the aperture of the receiving optics.
REFERENCES:
patent: 3923395 (1975-12-01), Bodlau
patent: 4047816 (1977-09-01), Pell et al.
Cavanaugh Lawrence A.
Nelms David C.
United Technologies Corporation
LandOfFree
Apparatus and method for speckle tracking does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for speckle tracking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for speckle tracking will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1836416