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RADAR LIQUID LEVEL DETECTION USING STEPPED FREQUENCY PULSES

  • US 20110163910A1
  • Filed: 02/19/2007
  • Published: 07/07/2011
  • Est. Priority Date: 02/22/2006
  • Status: Active Grant
First Claim
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1. A method for accurately determining a level of a liquid comprising:

  • emitting radar signals towards the liquid, the emitted radar signals having multiple frequencies and multiple first phases;

    receiving radar signals reflected from the liquid, the reflected radar signals having the multiple frequencies and multiple second phases;

    determining multiple phase differences between the emitted radar signals and the reflected radar signals; and

    deriving the level of the liquid based on the phase differences.

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