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PSEUDO-RANDOM CODED DOPPLER TRACKING AND RANGING

  • US 3,727,222 A
  • Filed: 11/17/1970
  • Issued: 04/10/1973
  • Est. Priority Date: 11/17/1970
  • Status: Expired due to Term
First Claim
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1. A data transmitting and receiving system, comprising data transmitting means operative when activated to transmit a signal, data receiving means operative when activated to receive a signal derived from the transmitted signal, and control means operatively connected to activate the transmitting and receiving means, the control means being operative to activate the transmitting means for each ON period of a sequence of ON and OFF periods, the relative lengths of the periods being predetermined and such that each part of the sequence measured from the beginning of the sequence differs from the next following part of equal length, the control means being operative to activate the receiving means during each said OFF period.

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