Aeronautics and astronautics – Missile stabilization or trajectory control – Automatic guidance
Reexamination Certificate
2005-02-08
2005-02-08
Gregory, Bernarr E. (Department: 3662)
Aeronautics and astronautics
Missile stabilization or trajectory control
Automatic guidance
C244S003150, C244S003190, C342S061000, C342S062000
Reexamination Certificate
active
06851645
ABSTRACT:
A method and apparatus for finding a relative direction of received radiation is described. The received radiation is incident upon a window system at an angle and is transmitted therethrough. The magnitude of the transmitted radiation decreases as a continuous function of increasing angle of incidence, known as Fresnel transmittance. Opposing radiation detectors then detect this transmitted radiation, thereby creating a pair of detection signals, By dividing the difference of the detection signals by the sum of the detection signals, a processor generates a beta angle error curve and finds the relative direction of the radiation. Based upon this beta angle error curve, the processor generates an appropriate error correction signal for guiding an object based upon the relative direction of the received radiation. The method and apparatus are readily applicable to guiding munitions using a laser monopulse to designate a target.
REFERENCES:
patent: 3657547 (1972-04-01), Mansfield
patent: 4085910 (1978-04-01), Baker et al.
patent: 4143835 (1979-03-01), Jennings, Jr. et al.
patent: 4900914 (1990-02-01), Raff et al.
patent: 5432623 (1995-07-01), Egan et al.
patent: 5490643 (1996-02-01), Jano et al.
patent: 5529262 (1996-06-01), Horwath
patent: 5784156 (1998-07-01), Nicholson
patent: 6060703 (2000-05-01), Andressen
patent: 6137626 (2000-10-01), Takaoka
patent: 6219185 (2001-04-01), Hyde
patent: 6307521 (2001-10-01), Schindler et al.
patent: 6507392 (2003-01-01), Richards et al.
patent: 6565036 (2003-05-01), Palathingal et al.
patent: 6568629 (2003-05-01), Perrin et al.
Baker Brian C.
Turner Mark A.
Williams Brett A.
Gregory Bernarr E.
Lockheed Martin Corporation
Sidley Austin Brown & Wood LLP
LandOfFree
Non-coherent fresnel direction finding method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-coherent fresnel direction finding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-coherent fresnel direction finding method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3452051