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System and method for passively estimating angle and range of a source using signal samples collected simultaneously from a multi-aperture antenna

  • US 7,292,180 B2
  • Filed: 06/13/2005
  • Issued: 11/06/2007
  • Est. Priority Date: 06/13/2005
  • Status: Active Grant
First Claim
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1. A system for passively estimating range and angle of a source comprising:

  • an antenna to simultaneously receive signals from the source through a plurality of sub-apertures; and

    a signal processor to perform a proximity test using samples simultaneously collected from the sub-apertures to determine whether or not to calculate angle and range estimates to the source based on either a curved wavefront assumption or a planar wavefront assumption.

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