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SYSTEM AND METHOD FOR NONLINEAR RADAR

  • US 20140313071A1
  • Filed: 04/17/2014
  • Published: 10/23/2014
  • Est. Priority Date: 04/17/2013
  • Status: Active Grant
First Claim
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1. A nonlinear radar (NLR) comprising:

  • transmitter circuitry configured to generate a plurality of base transmission pulses at a base transmission power;

    a switchable transmitter power-modifying circuit configured to receive the plurality of base transmission pulses, and for each of the base transmission pulses, to select a transmitter power-modification path from a first transmitter power-modification path that modifies the base transmission power to a first transmission power, and a second transmitter power-modification path that modifies the base transmission power to a second transmission power, the second transmission power being greater than the first transmission power;

    a transmitter antenna configured to transmit the power-modified transmission pulses toward a reflective object;

    a receiver antenna configured to receive a plurality of base reflected pulses at differing base reflected powers;

    a switchable receiver power-modifying circuit configured to receive the plurality of base reflected pulses, and for each of the base reflected pulses, to select a receiver power-modification path from a first receiver power-modification path that modifies the base reflected power to a first receiver power, and a second receiver power-modification path that modifies the base reflected power to a second receiver power, the first receiver power being greater than the second receiver power;

    receiver circuitry configured to process the power-modified reflected pulses,whereineach base reflected pulse corresponds to a corresponding power-modified transmission pulse that has been reflected off the reflective object,a transmission ratio of the first transmission power to the second transmission power is the same as a receiver ratio of the second receiver power to the first receiver power,the receiver circuitry is configured to subtract one of a first power-modified reflected pulse and a second power-modified reflected pulse from the other of the first power-modified reflected pulse and the second power-modified reflected pulse,the first and second power-modified reflected pulses are based on identical base transmission pulses,the first power-modified reflected pulse is at the first receiver power, and is based on a first power-modified transmission pulse that was transmitted at the first transmission power, andthe second power-modified reflected pulse is at the second receiver power, and is based on a second power-modified transmission pulse that was transmitted at the second transmission power.

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