Matches 251 - 300 out of 330 < 1 2 3 4 5 6 7 >


Match Document Document Title
3767907 CORRELATION MEASUREMENT APPARATUS  
An analog correlation measurement apparatus provides a relative correlation figure of merit between an unknown and a known signal. The known signal is photographically stored on a film strip...
3756683 HOLOGRAM IMAGE-SPACE SCALLING  
The image space of a hologram is analyzed by forming a diffraction-point hologram of a diffraction point at a known distance from the plane on which its hologram is formed and cross-correlating...
3740747 CROSS-CORRELATOR  
1. A cross-correlator for processing signal data stored on film comprising, in combination, means for scanning said film with an electron beam; a reference signal; means for modulating said...
3732565 SPECTRUM ANALYSIS SYSTEMS USING OPTICAL CORRELATION TECHNIQUES PARTICULARLY USEFUL IN PULSE MODULATED DOPPLER RADAR SYSTEMS  
System of spectrum analysis using optical correlation in real time with non-coherent light, comprising a moving plan with tracks, each track representing a frequency corresponding to the central...
3714404 BIREFRINGENT OPTICAL CORRELATOR  
A birefringent optical correlator having a light source, a pair of ultrasonic delay lines and a photosensitive device. The birefringent optical correlator does not contain apertures or polarizers...
3706881 OPTICAL WAVE CORRELATION  
1. Apparatus for determining the correlation between a message wave and a reference wave which comprises A source of light, A light-transparent compression wave-supporting medium, Means for...
3697757 ARRANGEMENTS FOR DETECTING DISTORTED OPTICAL PULSES USING A CORRELATION TECHNIQUE  
This application describes various arrangements for resolving a train of overlapping optical pulses. In each, a pilot pulse is used in conjunction with an information pulse train, to form a...
3694657 HOLOGRAPHIC CORRELATOR WITH A FOLDED PATH ACOUSTIC CELL INPUT  
An optical signal processing system includes apparatus for identifying a complex signal by an optical matched filter. The matched filter consists of a hologram recorded by projecting coherent...
3688101 OPTICAL CORRELATION APPARATUS  
An optical correlation system in which an optical modulator modulates a collimated monochromatic beam of light in accordance with an input reference signal to the modulator. An output light beam...
3652162 COMPLEX DATA PROCESSING SYSTEM EMPLOYING INCOHERENT OPTICS  
An optical system for processing analog information in the form of complex data without a requirement for coherent optics, wherein discrete pieces of data having magnitude and phase components are...
3648039 OPTICAL CORRELATOR FOR AUTOMATIC STEREOPLOTTING APPARATUS  
A coherent optical correlator having a canted optical flat for optically displacing the imagery on one transparency of a stereo pair with respect to the imagery on the other transparency. The...
3646335 RECORDER CORRELATOR USING SCANNING RECORDER DEVICES  
A technique for simultaneously generating and recording a correlation function by utilizing an intensity modulated beam of light or electrons directed onto a record medium in a scanning format is...
3642350 COMPUTER-GENERATED FILTERING METHOD  
A method of optical filtering in which a phase object is constructed in accordance with the desired convolutional filter operator and during the filtering operation incoherent light is used. This...
3637293 KINOFORM MATCHED FILTER METHOD  
A method of optical filtering in which a phase object is constructed in accordance with the desired matched filter operator and during the filtering operation incoherent light is used. This type...
3638006 SOLID-STATE CORRELATOR  
The invention relates to a solid-state area correlation device which can be associated with other separate components to achieve a closed-loop correlation function between two images....
3634749 ACOUSTO-OPTICAL SIGNAL PROCESSING SYSTEM  
An acousto-optical signal processing system usable for signal correlation or spectrum analysis. Collimated light passes through an acousto-optical cell to provide a spatial carrier that is...
3621222 DATA PROCESSING SYSTEM FOR CURVES RECORDING ON CHARTS WHOSE TRACE VARIES IN WIDTH  
A data processing system for curves recorded on charts wherein a straight line y=a (constant) and a curve y=f1 (κ) are recorded, the curves having a certain width. Variations in reflected light...
3602718 MEANS FOR MEASURING THE DURATION OF VERY SHORT LIGHT PULSES, SUCH AS LASER PULSES  
Automatic device for measuring the duration of a very short light pulse, such as a laser pulse, by a correlation procedure from two "half pulses" including two lines; each provoking a different...
3600594 FIBER OPTICS PULSE WIDTH MODULATOR  
An optical pulse width modulator having a spiral stack of optical fibers providing a plurality of independent channels of different length for the passage of light. A suitable light source is...
3599209 PHOTOSENSITIVE ARRAY CORRELATOR  
A photosensitive array correlator having a linear array of light sensitive lements positionable over the single line scan of a cathode ray tube indicator of a doppler radar receiver in combination...
3596182 MULTIPATH DELAY AND CORRELATION BANDWIDTH ANALYZER  
Multipath delay is analyzed by generating and transmitting a pseudorandom signal and at the receiver the reverse replica of the transmitted signal is also generated. The two signals are correlated...
3592547 OPTICAL MATRIX-PROCESSING SYSTEM AND OPTICS  
An optical processing system which performs a general matrix transformation. Analog data to be transformed is entered as a first set of inputs written upon a first writing medium in the form of...
3582635 OPTICAL CORRELATION OF ELECTRONIC PULSES  
A moving waveform density image induced in an ultrasonic light modulator by an applied electronic pulse is optically correlated with a diffraction grating formed by grooves in a transparent plate...
3573449 OPTICAL PULSE EXPANSION SYSTEM  
An optical pulse expansion device includes first and second ultrasonic light modulators and a coded mask positioned so that a collimated light beam can be passed serially through these elements...
3571583 MULTICHANNEL  
This invention is directed to a multichannel optical cross-correlation analyzer. The analyzer utilizes two function on recording media whose directions of motion are perpendicular to each other....
3560724 OPTICAL CORRELATORS  
In one type of optical correlator disclosed, a Raleigh surface wave coded accordance with electrical signal information is propagated down a solid, light-conducting member and changes the boundary...
3555259 ELECTRONIC OPTICAL DATA PROCESSING SYSTEM  
An electro-optical system convolves two variable-density traces by two cathode-ray scanning means using the output of scanning of a first trace to vary the beam intensity while scanning the...
3536376 OPTICAL MODULATION APPARATUS HAVING A PHASE RETARDING SPATIAL FILTER  
3526895 OPTICAL PROCESS APPLIED TO RADIO RANGE DETECTION  
3521075 METER READING SYSTEM COMPRISING FILMING OF METER DIAL AND SUBSEQUENT ANALYSIS OF THE FILM USING CORRELATION TECHNIQUES  
3520616 OPTICAL PULSE MEASUREMENT SYSTEM  
3519331 TWO-DIMENSIONAL OPTICAL DATA PROCESSOR  
3509453 LIGHT MODULATION SYSTEM FOR ANALYSIS OF INFORMATION  
3509565 METHOD AND APPARATUS FOR OPTICALLY PROCESSING INFORMATION  
3501238 METHOD AND APPARATUS FOR ENHANCING DIFFERENCES BETWEEN SIMILAR SPATIAL SIGNALS  
3492469 OPTICAL SYSTEM FOR AUTO-CORRELATING AND AUTO-CONVOLVING RECORDED SIGNALS  
3675985 OPTICAL AUTOCORRELATOR FOR AUTOCORRELATING PICOSECOND OPTICAL PULSES  
3486016 COHERENT SIMULTANEOUS CROSS-CORRELATING SIGNAL SEPARATOR  
3483557 RADAR RECEIVER HAVING IMPROVED OPTICAL CORRELATION MEANS  
3479494 INFORMATION PROCESSING AND DISPLAY WITH OPTICAL CORRELATION  
3457425 OPTICAL CORRELATOR MODULATING LIGHT TWICE IN ULTRASONIC LIGHT MODULATOR  
3453048 PARTIALLY COHERENT OPTICAL CORRELATOR  
3432647 ELECTRO-OPTICAL CORRELATOR  
3430092 ELECTRONIC AREA CORRELATOR TUBE  
3424937 ELECTRON IMAGE CORRELATOR TUBE  
3421003 APPARATUS AND METHOD FOR OPTICAL SIGNAL PROCESSING  
3409871 Elimination of multiple events on seismograms obtained at water-covered areas of the earth  
3401268 Optical correlator utilizing a plurality of axially aligned photochromic disks  
3398269 Polychromatic optical correlator  
3390257 Optical computer for correlation and convolution  

Matches 251 - 300 out of 330 < 1 2 3 4 5 6 7 >