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Satellite surveillance system and method

  • US 6,611,226 B1
  • Filed: 04/10/2002
  • Issued: 08/26/2003
  • Est. Priority Date: 04/20/2000
  • Status: Active Grant
First Claim
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1. A method of classifying an object from a satellite comprising:

  • generating a signal from the satellite;

    receiving a reflected signal from the object;

    determining a first antenna angle of the object from a doppler shift of the reflected signal;

    determining a second angle of the object from a monopulse measured angle of the reflected signal;

    calculating a difference of the first angle and the second angle; and

    determining whether the object is moving based on the difference.

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