Matches 301 - 326 out of 326 < 1 2 3 4 5 6 7
Match Document Document Title
3903401 Spectrum analyzer using delta modulation encoding  
Disclosed are a method and apparatus for computing the power spectrum of an applied analog signal at a chosen frequency, by converting the analog signal into a binary sequence, by separately...
3883803 Non-coherent multi-channel optical spectrum analyzer  
A system for simultaneously analyzing the frequency content of a plurality f complex input signals. The input signals are converted to optical signals and recorded on photographic film. Each input...
3833797 STATISTICAL NOISE PROCESSOR  
A statistical processing device for improving the signal to noise ratio of ignals and transients within a noise environment. Samples of electrical signals indicative of ocean noise are applied to a...
3731526 VARIABLE CENTER FREQUENCY FILTER  
A system for analyzing the frequency response of apparatus such as rotary machinery includes a plurality of vibration sensors which are multiplexed to apparatus utilizing amplitude sensitive phase...
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...
3725690 APPARATUS FOR EVALUATING A SIGNAL  
Apparatus to determine directly from a signal the frequency which represents the standard deviation in the output spectrum of the signal as well as the ratio between the standard deviation of the...
3720871 DIGITAL FUNDAMENTAL PRP ANALYZER FOR PULSE TRAIN SIGNALS  
A pulse-repetition-period and analyzer comprising binary converter means for converting an input waveform into a series of equal-amplitude binary pulses, shift register means for sorting the pulses...
3715509 METHOD AND MEANS FOR PROVIDING RESOLUTION LEVEL SELECTION IN A SPECTRUM ANALYZER  
Resolution level selection in a spectrum analyzer is provided by digitizing the IF analog input signal at a controllable rate, storing it in a digital memory device, and reading out the stored...
3639738 METHOD AND DEVICE FOR RECORDING SPECTRA  
An arrangement for controlling the scan of a spectrometer employs a computer and associated equipment for initiating one complete scan of the spectrometer. During this scan where partial ranges of...
3621388 ELECTRONIC WAVE ANALYZER FOR DETERMINING THE FREQUENCY AND AMPLITUDE OF COMPONENTS IN A COMPLEX WAVEFORM  
A wave analyzer capable of determining the amplitudes and phases of frequency components in a complex waveform. he selection of a frequency component is determined by the frequency of an external...
3609317 VARIABLE FREQUENCY AUDIO FREQUENCY MODULATOR FOR R.F. SPECTROMETER  
The radio frequency spectrometer is disclosed employing a variable frequency audio frequency field modulator for producing a variable frequency sideband which can be stepped through the resonance...
3544894 APPARATUS FOR PERFORMING COMPLEX WAVE ANALYSIS  
3529140 SPECTRUM ANALYZER  
3526833 FREQUENCY RESPONSE ANALYZER INCLUDING A FUNCTION GENERATOR SECTION AND A COLLATOR SECTION  
3459894 DYNAMIC COMB FILTER  
3428791 NON-INJECTION SELF-ADAPTIVE CONTROLLER  
3416081 Frequency spectrum analyzer utilizing correlation detectors wherein the output is suppressed until a particular response is obtained  
3134896 Electrical signal analyzing systems  
3096479 Energy spectrum and cross spectrum analysis system  
3029417 Production analyzer  
2971896 Acoustic determination of operating conditions  
2896162 Heterodyne autocorrelator  
2894145 Double modulator utilizing photo emissive material  
2820173 Spectrum analyzer  
3553723 Title is not available  
3555890 Title is not available  
Matches 301 - 326 out of 326 < 1 2 3 4 5 6 7