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Simultaneous amplitude sequency apparatus

  • US 4,432,019 A
  • Filed: 03/12/1982
  • Issued: 02/14/1984
  • Est. Priority Date: 03/12/1982
  • Status: Expired due to Fees
First Claim
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1. A simultaneous amplitude sequency apparatus comprising in combination:

  • A transmitter group which comprises;

    a scanner means to scan a scene and generate an image signal thereof,an A/D converter means to convert said image signal to a digital signal,a coder means to receive said digital signal, said coder means coding said digital signal to provide a coded digital signal,a first memory means to receive and store said coded digital signal,a Fourier transform means to receive said coded digital signal, said Fourier transform means transforming said coded digital signal into a frequency signal, said frequency signal being applied to said first memory means for storage,a correlator means to receive said frequency signal from said Fourier transform means and to receive said coded digital signal from said first memory means, said correlator means correlating said frequency signal with said coded digital signal, said correlator means generating a correlated samples signal from the portions of the frequency signal which meet the correlation criteria,a filter means to receive said correlated samples signel from said correlator means, said filter means only passing those correlated samples of said correlated samples signal which meet the frequency bandpass tolerance limitations of said filter means, and,a transmitter means to receive said correlated samples signal from said filter means, said transmitter means including an antenna from which said correlated samples signal is transmitted, and,A receiver group which comprises;

    a receiver means with an antenna to receive and correlate samples signal, said receiver means detecting said correlated samples signals,a decoder means to receive said correlated samples signal from said receiver means, said decoder means decoding said correlated samples signal into a frequency signal,a second memory means receiving said frequency signal from said decoder means, said second memory means storing said frequency signal,an inverse Fourier transform means to receive said frequency signal from said decoder means, said inverse Fourier transform means transforming said frequency signal into a digital signal in which any gaps that may occur in the frequency signal due to filtering in said receiver group prior to transmission, will be filled by said second memory means,a D/A converter means to receive said digital signal from said inverse Fourier transform means, said D/A converter means converting said digital signal to an analog image signal, and,a recorder means to record said analog image signal which is received from said D/A converter means.

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