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Range gated holographic radar

  • US 20100214157A1
  • Filed: 02/26/2009
  • Published: 08/26/2010
  • Est. Priority Date: 02/26/2009
  • Status: Active Grant
First Claim
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1. A range-gated holographic radar, comprising:

  • a PRI generator for producing PRI pulses;

    an intermediate frequency IF generator for producing an IF modulation signal;

    a stagger modulator responsive to the PRI pulses and to the IF modulation signal for producing staggered PRI pulses;

    a first pulse generator responsive to the staggered PRI pulses for generating transmit pulses having a duration longer than the longest transmit pulse to desired echo duration;

    an RF oscillator responsive to the transmit pulses for producing transmit RF bursts and for forming reference waves;

    an antenna connected to the RF oscillator for radiating the transmit RF bursts and for receiving echoes from the bursts;

    a range delay element connected to the PRI generator for producing range delay pulses;

    a second pulse generator responsive to the range delay pulses for generating gate pulses;

    an RF magnitude sampler responsive to the gate pulses and connected to the antenna for producing RF magnitude samples of the sum of the reference waves and echoes;

    an IF bandpass filter for passing IF modulated magnitude samples; and

    an IF detector for demodulating the filtered magnitude samples and for producing an interferometric output signal.

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