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Synchronization system for controlling switches

  • US 5,050,986 A
  • Filed: 06/05/1990
  • Issued: 09/24/1991
  • Est. Priority Date: 06/05/1990
  • Status: Expired due to Fees
First Claim
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1. A system for use in connection with target ranging, comprising:

  • generator means for producing an energy pulse for illuminating a target in response to a trigger signal;

    radiator means for directing the illuminating energy pulse produced by the generator means toward the target and receiving a reflected energy pulse from the target;

    receiver means for detecting the reflected energy pulse;

    energy transfer means having at least three ports, a generator port coupled to the generator means, a radiator port coupled to the radiator means and a receiver port coupled to the receiver means, wherein the energy transfer means transfers illuminating energy from the generator port to the radiator port and reflected energy from the radiator port to the receiver port and a small backscatter portion of the illuminating energy pulse from the generator port to the receiver port substantially time coincident with the illuminating energy pulse;

    switching means between the receiver port and the receiver means for transferring energy from the energy transfer means to a dissipative load when in a first state or from the energy transfer means to the receiver means when in a second state;

    control means, responsive to the trigger signal and the time coincident backscatter energy, for controlling the switching means so as to maintain the switching means in the first state while significant time coincident backscatter energy exists and thereafter change the switching means to the second state.

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