Communications: directive radio wave systems and devices (e.g. – Determining distance – Combined with determining direction
Reexamination Certificate
2007-11-06
2007-11-06
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Combined with determining direction
C342S029000, C342S036000, C342S068000, C342S165000, C342S173000, C342S195000
Reexamination Certificate
active
11152291
ABSTRACT:
A system and method for passively estimating range and angle of a source are disclosed. The source may be any wave source including radio-frequency (RF), optical, acoustic or seismic sources. In some RF embodiments, the system includes a single aperture antenna to simultaneously receive RF signals from the RF 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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Gorrie Gregory J.
Raytheon Company
Schwegman Lundberg & Woessner, P.A.
Sotomayor John B
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