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METHOD AND SYSTEM FOR DETERMINING WATER VAPOR PROFILE USING GPS SIGNALS

  • US 20080312836A1
  • Filed: 06/18/2007
  • Published: 12/18/2008
  • Est. Priority Date: 06/18/2007
  • Status: Active Grant
First Claim
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1. A method for obtaining weather related information for a portion of the Earth'"'"'s atmosphere between a predetermined surface portion of the Earth and an airborne object located over the predetermined surface portion, using position locating signals from a space vehicle, the method comprising:

  • receiving a first position locating signal while at a known, predetermined elevation above said predetermined surface portion of the Earth, said first position locating signal being received directly from said space vehicle;

    receiving a second position locating signal while at said known, predetermined elevation, said second position locating signal being reflected from said predetermined surface portion at a known angle;

    using phase information pertaining to a phase of each of said first and second position locating signals to determine a refractivity of said atmosphere between said predetermined surface portion and said airborne object; and

    using said refractivity to determine weather related information for said atmosphere.

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