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Radar signature evaluation apparatus

  • US 6,529,157 B1
  • Filed: 02/11/2002
  • Issued: 03/04/2003
  • Est. Priority Date: 02/11/2002
  • Status: Expired due to Fees
First Claim
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1. An apparatus for determining a radar signature for a vehicle comprising:

  • transmitting means for transmitting an RF (radio frequency) signal at said vehicle, said RF signal having pulses of microwave energy;

    receiving means for receiving reflections of said RF signal from said vehicle, said receiving means providing an electrical signal representative of the reflections of said RF signal;

    signal generating means for generating a reference signal representative of RF signal transmitted by said transmitting means to said vehicle;

    comparison means connected to said receiving means to receive said electrical signal and said signal generating means to receive said reference signal;

    said comparison means comparing said electrical signal and said reference signal and then providing an intermediate frequency signal which represents a phase and an amplitude difference between said RF signal transmitted to said vehicle and the reflections of said RF signal from said vehicle;

    demodulator means connected to said comparison means to receive said intermediate frequency signal, said demodulator means extracting I and Q components from said intermediate frequency signal, said I and Q components comprising amplitude and phase information for said radar signature of said vehicle;

    converter means connected to said demodulator means to receive said I and Q components, said converter means converting said I and Q components from an analog format to a digital format;

    processing means connected to converter means to receive said I and Q components;

    said processing means processing said I and Q components to generate a radar cross section for said vehicle representing the radar signature for said vehicle, said radar cross section having a color coded format which approximates an intensity of the radar cross section for said vehicle at a plurality of locations on said vehicle;

    display means connected to said processing means, said display means displaying the radar cross section in said color coded format to allow a user of said apparatus to observe said radar cross section for said vehicle in said color coded format.

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