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Range imaging laser radar

  • US 4,935,616 A
  • Filed: 08/14/1989
  • Issued: 06/19/1990
  • Est. Priority Date: 08/14/1989
  • Status: Expired due to Term
First Claim
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1. In a laser radar wherein a transmitted beam is periodically modulated and a reflection of said beam is sensible after a phase delay dependent upon the range of a target illuminated by said transmitted beam, a ranging receiver comprising:

  • photo emitter means for converting said reflected beam modulation to an accordingly modulated electron stream;

    a demodulation periodic signal source;

    modulation means disposed in the path of said electron stream and connected to said demodulation periodic signal source, for modulating said electron stream with a signal from said demodulation periodic signal source;

    means for converting said electron stream, as modulated by said modulation means, to a photon signal manifestation thereof; and

    detector means response to said photon signal manifestation for providing electrical signals indicative of said photon signal manifestation.

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