Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1987-09-03
1989-02-14
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
2503381, 250351, G01J 510
Patent
active
048048445
ABSTRACT:
Correlation is used to enhance the temporal resolution capability of incident energy detectors for high bandwidth signals. Such enhanced resolution is attained by using a primary response of the detectors, which may be weak but which accurately replicates the temporal waveshape of the incident energy pulse. A secondary response of the detectors, which is delayed from and more powerful than the primary response, but does not track the incident energy pulse as well as the primary, is correlated with the primary response. The secondary response is preferably passed through an inverse matched filter to provide a pulse more faithfully following the incident energy pulse prior to correlation with the primary response. Circuitry is provided for performing the enhancement, and a modulating device is used to permit the detector to respond to long-duration incident energy.
REFERENCES:
patent: 3723737 (1973-03-01), Zeldman et al.
patent: 3773564 (1973-11-01), Yamaka et al.
patent: 3818356 (1974-06-01), Kinbara
patent: 3831029 (1974-08-01), Jones et al.
patent: 3846820 (1974-11-01), Lampe et al.
patent: 3855864 (1974-12-01), Douglas
patent: 3891847 (1975-06-01), Schmidt et al.
patent: 4024560 (1977-05-01), Miller et al.
patent: 4028548 (1977-06-01), Scott
patent: 4032783 (1977-06-01), Koda
patent: 4044251 (1977-08-01), Taylor et al.
patent: 4060729 (1977-11-01), Byer et al.
patent: 4081679 (1978-03-01), Cohn
patent: 4117328 (1978-09-01), Auphan
patent: 4155007 (1979-05-01), Beckmann
patent: 4441023 (1984-04-01), Doctor et al.
patent: 4570157 (1986-02-01), Kodaira
patent: 4612443 (1986-09-01), Alcidi
Stotlar et al, "10.6 .mu.m Damage Threshold Measurements on Sub-One-Hundrps Pyroelectric Detectors", 1979 IEEE Symposium on Applications of Ferroelectrics, Symposium Digest, p. 95, Jun. 1979; also published in Ferroelectrics, 1980, vol. 28, pp. 325-327.
Skolnik, Introduction to Radar Systems, 2nd Ed., McGraw Hill, 1980, Section 10.3, pp. 375-376.
Auston & Glass, "Optical Generation of Intense Picosecond Electrical Pulses", Appl. Phys. Lett., vol. 20, No. 10, May 15, 1972, pp. 398-399.
Stotlar et al, "Ultrafast Pyroelectric Detectors for CO.sub.2 Laser Measurements", J. Optical Soc., vol. 69, No. 2, p. 373, Feb. 1979.
Baylor Walter R.
Elbaum Saul
Howell Janice A.
McDonald Thomas E.
Rauchholz William F.
LandOfFree
Method and apparatus for enhancement of primary pyroelectric res does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for enhancement of primary pyroelectric res, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for enhancement of primary pyroelectric res will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1367460