Optics: measuring and testing – Angle measuring or angular axial alignment – Relative attitude indication along 3 axes with photodetection
Patent
1976-03-18
2000-08-01
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Relative attitude indication along 3 axes with photodetection
244 316, 2502032, 35613905, 35613906, G01B 1126, G01C 100, F41G 700
Patent
active
060974818
ABSTRACT:
A "bang-bang", i.e. digital tracking system for a remote laser designated target having position, rate and acceleration errors. The system is responsive to the sign of the error signal (up/down, right/left) in relation to boresight as opposed to the amplitude of the received signal output from an optical quadrature detector to determine the occurrence of two consecutive zero crossings of boresight following a system gain change where there is a change in sign for consecutive signal detections and as a result thereof reduces the size or amplitude of the digital control step which is utilized to determine the limit cycle of the oscillation of the tracker's optics. Additionally, an estimate of the velocity error is determined from the number of signal detections between successive zero crossings, i.e. from up to down, or vice versa, and left to right, or vice versa and summed with the control step to provide a composite tracking error signal which is applied to a gimbal drive mechanism controlling the tracker optics.
REFERENCES:
patent: 3469081 (1969-09-01), Lattmann
patent: 3644043 (1972-02-01), Jones et al.
patent: 3793634 (1974-02-01), Heller et al.
patent: 3842420 (1974-10-01), Rabow
Coffey David W.
Woolfson Martin G.
Buczinski Stephen C.
Northrop Grumman Corporation
LandOfFree
Bang-bang laser spot tracker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bang-bang laser spot tracker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bang-bang laser spot tracker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-669306